{"id":27244,"date":"2025-11-10T17:46:28","date_gmt":"2025-11-10T09:46:28","guid":{"rendered":"https:\/\/xjysilicone.com\/?p=27244"},"modified":"2025-11-10T17:46:39","modified_gmt":"2025-11-10T09:46:39","slug":"how-to-prepare-high-performance-silicone-thermal-conductivity-materials%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.xjysilicone.com\/pt\/how-to-prepare-high-performance-silicone-thermal-conductivity-materials.html","title":{"rendered":"Como preparar materiais de silicone de alta condutividade t\u00e9rmica para alto desempenho?"},"content":{"rendered":"<div class=\"blog-posts single-post\" style=\"border-bottom: 2px solid #00999a;\" uia-uid=\"0|1\">\n<article class=\"post post-large blog-single-post border-0 m-0 p-0\">\n<div class=\"post-content ml-0\">\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Com o desenvolvimento de produtos eletr\u00f3nicos rumo \u00e0 miniaturiza\u00e7\u00e3o, multifuncionalidade e alto desempenho, surgiu a tecnologia de integra\u00e7\u00e3o de sistemas tridimensionais de alta densidade. A integra\u00e7\u00e3o tridimensional de sistemas torna a efici\u00eancia da montagem elevada, a velocidade de transmiss\u00e3o de sinais r\u00e1pida e a confiabilidade do sistema melhor. Com estas vantagens, devido ao enorme consumo de energia, tamb\u00e9m levar\u00e1 a um aumento do calor por unidade de \u00e1rea do substrato, sendo dada cada vez mais aten\u00e7\u00e3o \u00e0 dissipa\u00e7\u00e3o de calor. Isto coloca requisitos de desempenho mais elevados para os materiais de dissipa\u00e7\u00e3o de calor das interfaces t\u00e9rmicas. Atrav\u00e9s do projeto de dissipa\u00e7\u00e3o de calor, o calor acumulado na interface t\u00e9rmica do produto eletr\u00f3nico \u00e9 dissipado a tempo de manter a temperatura de trabalho dentro do intervalo de projeto razo\u00e1vel, garantindo assim a estabilidade e confiabilidade do sistema do produto. A condutividade t\u00e9rmica \u00e9 usada para descrever a condutividade t\u00e9rmica de um material. Quanto maior a condutividade t\u00e9rmica, maior a condutividade t\u00e9rmica do material. Por conseguinte, o requisito b\u00e1sico dos materiais de dissipadores de calor de alto desempenho \u00e9 que a condutividade t\u00e9rmica seja suficientemente elevada.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">As principais caracter\u00edsticas das juntas termossiliconadas de alto desempenho devem geralmente satisfazer os requisitos de alta condutividade t\u00e9rmica, boa confiabilidade do produto, boa ades\u00e3o, utiliza\u00e7\u00e3o conveniente, amortecimento de vibra\u00e7\u00f5es e redu\u00e7\u00e3o de ru\u00eddo, prote\u00e7\u00e3o ambiental verde, etc. Para al\u00e9m da condutividade t\u00e9rmica b\u00e1sica, o cliente tamb\u00e9m prestar\u00e1 aten\u00e7\u00e3o \u00e0 deforma\u00e7\u00e3o por compress\u00e3o, altera\u00e7\u00e3o da resist\u00eancia t\u00e9rmica, press\u00e3o instant\u00e2nea e press\u00e3o de longo prazo da junta t\u00e9rmica; Para produtos finos, tamb\u00e9m prestaremos aten\u00e7\u00e3o ao desempenho operacional do produto, principalmente \u00e0 magnitude da for\u00e7a de descolamento, etc. <\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Como a junta t\u00e9rmica \u00e9 usada apenas para preencher o espa\u00e7o, a tens\u00e3o \u00e9 muito pequena, portanto as propriedades mec\u00e2nicas geralmente n\u00e3o s\u00e3o altas, o que torna o produto amplamente utilizado. Com a melhoria cont\u00ednua dos requisitos de desempenho dos produtos eletr\u00f3nicos, as exig\u00eancias para as juntas t\u00e9rmicas est\u00e3o a tornar-se cada vez mais elevadas. As juntas t\u00e9rmicas ser\u00e3o continuamente atualizadas. Muitas explora\u00e7\u00f5es foram feitas, mas a condutividade t\u00e9rmica est\u00e1 maioritariamente abaixo de 3,0 W\/(m\u00b7K), a formula\u00e7\u00e3o \u00e9 incerta, o que est\u00e1 seriamente desligado da aplica\u00e7\u00e3o pr\u00e1tica do produto, especialmente a investiga\u00e7\u00e3o sobre confiabilidade \u00e9 escassa. Nesta experi\u00eancia, utilizou-se \u00f3leo de silicone reativo como material base, e adicionou-se enchimento t\u00e9rmico de alto desempenho para preparar a junta t\u00e9rmica com condutividade t\u00e9rmica de 4,0 W\/(m\u00b7K). O produto tem boa usabilidade e confiabilidade e pode satisfazer as exig\u00eancias dos clientes para juntas t\u00e9rmicas de alto desempenho.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 40px; text-align: justify;\"><a href=\"#1\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">1. Experi\u00eancia<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#1.1\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">1.1 Principais mat\u00e9rias-primas e equipamentos<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#1.2\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">1.2 Prepara\u00e7\u00e3o de almofadas termossiliconadas<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#1.3\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">1.3 Teste de Desempenho<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 40px; text-align: justify;\"><a href=\"#2\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">2. Resultados e Discuss\u00e3o<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#2.1\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">2.1 \u00cdndice de desempenho da junta t\u00e9rmica<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#2.2\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">2.2 Efeito da espessura na deforma\u00e7\u00e3o por compress\u00e3o da junta t\u00e9rmica<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"1\" name=\"1\"><\/a><a href=\"#2.3\">2.3 Efeito da espessura na resist\u00eancia t\u00e9rmica da junta t\u00e9rmica<\/a><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#2.4\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">2.4 Efeito da press\u00e3o instant\u00e2nea e de longo prazo na deforma\u00e7\u00e3o por compress\u00e3o das juntas t\u00e9rmicas<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"1.1\" name=\"1.1\"><\/a><a href=\"#2.5\">2.5 Efeito da for\u00e7a de descolamento no desempenho operacional das juntas t\u00e9rmicas<\/a><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 80px; text-align: justify;\"><a href=\"#2.6\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">2.6 Confiabilidade das almofadas t\u00e9rmicas<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 40px; text-align: justify;\"><a href=\"#3\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">3. Conclus\u00e3o<\/span><\/span><\/span><\/span><\/a><\/p>\n<p style=\"margin: 0pt 0pt 0.0001pt 40px; text-align: justify;\"><a href=\"#XJY\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">XJY Silicones \u2013 First choice raw material supplier of silicone thermally conductive materials<\/span><\/span><\/span><\/span><\/a><\/p>\n<h2 style=\"margin-top:13pt; margin-bottom:13pt; text-align:justify\"><span class=\"ez-toc-section\" id=\"1_Experiment\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:28px;\"><span style=\"line-height:172%\"><span style=\"font-family:Arial\"><b><span style=\"font-family:'Open Sans'\">1. Experi\u00eancia<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"11_Main_raw_materials_and_equipment\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:22px;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">1.1 Principais mat\u00e9rias-primas e equipamentos<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"1.2\" name=\"1.2\"><\/a>\u00d3leo de silicone vin\u00edlico de baixa viscosidade: viscosidade 200 mPa\u00b7s, fra\u00e7\u00e3o molar de vinil 0,35% ; \u00f3leo de silicone vin\u00edlico de alta viscosidade: viscosidade 5000 mPa\u00b7s, fra\u00e7\u00e3o molar de vinil 0,35% ; \u00f3leo de silicone hidrogenado: viscosidade 50 mm\u00b2\/s, fra\u00e7\u00e3o m\u00e1ssica de hidrog\u00e9nio ativo 0,1% ; resina de silicone modificada; catalisador de platina, inibidor ; alumina: pureza \u226599%, tamanho m\u00e9dio de part\u00edcula 20 \u03bcm; nitreto de alum\u00ednio: pureza 99,5%, tamanho m\u00e9dio de part\u00edcula 0,5 \u03bcm; alumina esf\u00e9rica: pureza \u226599,8%, tamanho m\u00e9dio de part\u00edcula 70 \u03bcm. Misturador planet\u00e1rio duplo; forno, tipo ciclo t\u00e9rmico., <font face=\"\u5b8b\u4f53\">\uff61<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"12_Preparation_of_silicone_thermal_pads\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:22px;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">1.2 Prepara\u00e7\u00e3o de almofadas termossiliconadas<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"1.3\" name=\"1.3\"><\/a>Adicionar 80 g de \u00f3leo de silicone vin\u00edlico de baixa viscosidade, 8 g de \u00f3leo de silicone vin\u00edlico de alta viscosidade, 6 g de \u00f3leo de silicone hidrogenado, 5 g de resina de silicone modificada, 1,0 g de catalisador e 0,2 g de inibidor ao tanque de agita\u00e7\u00e3o, agitar durante 0,5 h e desaerear a v\u00e1cuo para remover bolhas; depois adicionar 55 g de nitreto de alum\u00ednio, agitar durante 0,5 h, depois adicionar 445 g de alumina, agitar uniformemente e depois desaerear a v\u00e1cuo para remover bolhas; finalmente, adicionar 402 g de alumina esf\u00e9rica, agitar durante 0,5 h e desaerear a v\u00e1cuo para remover bolhas. A pasta obtida \u00e9 formada entre os filmes de liberta\u00e7\u00e3o at\u00e9 uma determinada espessura, primeiro vulcanizada a 120 \u00b0C durante 30 minutos e depois curada a 150 \u00b0C durante 30 minutos para obter uma junta t\u00e9rmica de silicone.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"13_Performance_Test\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:22px;\"><span style=\"line-height:172%;\"><span style=\"font-family:Calibri;\"><b>1.3 Teste de Desempenho<\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Condutividade t\u00e9rmica: Usando o instrumento de medi\u00e7\u00e3o de condutividade t\u00e9rmica TPS2500S, testado de acordo com a ASTM D5470-2006.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Resist\u00eancia t\u00e9rmica: Usando o medidor de resist\u00eancia t\u00e9rmica LW9389 testado de acordo com a ASTM D5470-2006.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Dureza: Utilizando o medidor de dureza tipo Shore OO.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Densidade: Utilizando o dens\u00edmetro verdadeiro DPY-31 testado pelo m\u00e9todo de densidade verdadeira por h\u00e9lio.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Resist\u00eancia \u00e0 tra\u00e7\u00e3o: Utilizando a m\u00e1quina universal eletr\u00f4nica de teste LS1 testada de acordo com ASTMD412-2006.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Alongamento na ruptura: Utilizando a m\u00e1quina universal eletr\u00f4nica de controle ETM103A testada de acordo com ASTMD412-2006.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Resistividade volum\u00e9trica: Utilizando o testador de isolamento 1508 testado de acordo com ASTMD257-2007;<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Permissividade relativa: Testador de tens\u00e3o de ruptura HJC-50kV testado de acordo com ASTMD150-2011;<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">For\u00e7a de descolamento 180\u00b0: Testado pelo testador de for\u00e7a de descolamento AR-1000.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Propriedade de envelhecimento em alta temperatura: Adota forno de ciclo t\u00e9rmico Z120306. M\u00e9todo de teste: A amostra \u00e9 colocada a 150\u2103 por 440h e resfriada \u00e0 temperatura ambiente para testar a resist\u00eancia t\u00e9rmica;<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"2\" name=\"2\"><\/a>Propriedade de envelhecimento por choque frio e quente: Testado pela caixa de choque de alta e baixa temperatura WIEETS60. M\u00e9todo de teste: -40~125\u2103 para teste de ciclo frio e quente, a amostra \u00e9 colocada a -40\u2103 por 0,5h e depois a 125\u2103 por 0,5h, este processo \u00e9 1 ciclo, um total de 440 ciclos s\u00e3o testados e depois resfriado \u00e0 temperatura ambiente para <a id=\"2.1\" name=\"2.1\"><\/a>testar a resist\u00eancia t\u00e9rmica da amostra.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Moisture and heat aging\u00a0property:\u00a0Use the KTHB-415TBS constant temperature and humidity box. The thermal resistance of the sample was measured after being placed at 85\u00b0C and 85% relative humidity for 440 hours and then cooled to room temperature.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Instantaneous pressure:\u00a0At the specified compression rate, the test reaches the specified compression deformation pressure.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"margin:0pt 0pt 0.0001pt; text-align:justify\" value=\"50\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Press\u00e3o de longa dura\u00e7\u00e3o: Na taxa de compress\u00e3o especificada, o teste mant\u00e9m a deforma\u00e7\u00e3o de compress\u00e3o especificada por mais de 5 minutos.&nbsp;<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ul>\n<h2 style=\"margin-top:13pt; margin-bottom:13pt; text-align:justify\"><span class=\"ez-toc-section\" id=\"2_Results_and_Discussion\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:28px;\"><span style=\"line-height:172%\"><span style=\"font-family:Arial\"><b><span style=\"font-family:'Open Sans'\">2. Resultados e Discuss\u00e3o<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"21_Performance_index_of_heat-conducting_gasket\"><\/span><span style=\"color:#000000;\"><span style=\"font-size:22px;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.1 \u00cdndice de desempenho da junta t\u00e9rmica<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Os requisitos de condutividade t\u00e9rmica de almofadas t\u00e9rmicas de alto desempenho s\u00e3o relativamente altos. Geralmente, alta condutividade t\u00e9rmica \u00e9 alcan\u00e7ada por uma grande quantidade de cargas t\u00e9rmicas condutivas. Quando a quantidade de cargas t\u00e9rmicas condutivas representa 90% da massa total do sistema, a condutividade t\u00e9rmica atinge 4,0 W\/m\u2022K; neste momento, a densidade \u00e9 3,4 g\/cm\u00b3. Comparada com a almofada t\u00e9rmica condutiva comum, o alongamento na ruptura \u00e9 visivelmente reduzido, e a excelente performance de isolamento el\u00e9trico ainda \u00e9 mantida. As propriedades das almofadas t\u00e9rmicas de silicone preparadas s\u00e3o mostradas na Tabela 1.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<table class=\"MsoTableGrid\" style=\"border-collapse:collapse; border:1.0000pt solid #fcfcfc; font-family:&quot;Times New Roman&quot;; font-size:10pt\">\n<tbody>\n<tr>\n<td colspan=\"2\" style=\"border-bottom:1.0000pt solid #fcfcfc; background:#5a5a5a; width:426.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"568\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#ffffff;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">Tabela 1: <\/font><\/span><\/span><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Propriedades das Almofadas T\u00e9rmicas de Silicone<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Itens de teste<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Performance<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Condutividade t\u00e9rmica<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">4.0<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\"><a id=\"2.2\" name=\"2.2\"><\/a>Dureza Shore<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">50<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">D<\/font><\/span><\/span><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">ensity<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">3.4<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Resist\u00eancia \u00e0 Tra\u00e7\u00e3o<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">0.07<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Alongamento na ruptura<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">25<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Resistividade volum\u00e9trica<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">1<\/font><font face=\"\u5b8b\u4f53\">\u00d7<\/font><font face=\"Calibri\">10<\/font><\/span><\/span><sup><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><span style=\"vertical-align:super\"><font face=\"Calibri\">13<\/font><\/span><\/span><\/span><\/sup><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:Calibri\">Permissividade relativa<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p style=\"margin: 0pt 0pt 0.0001pt; text-align: center;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:10.5000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Calibri\">5.0<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"22_Effect_of_thickness_on_compression_deformation_of_the_heat-conducting_gasket\"><\/span><span style=\"font-size:22px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.2 Efeito da espessura na deforma\u00e7\u00e3o por compress\u00e3o da junta t\u00e9rmica<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">A deforma\u00e7\u00e3o por compress\u00e3o tamb\u00e9m \u00e9 um importante indicador das almofadas t\u00e9rmicas de alto desempenho. Quanto maior a deforma\u00e7\u00e3o por compress\u00e3o, melhor a flexibilidade do produto, mais f\u00e1cil \u00e9 o ajuste apertado e menor a resist\u00eancia t\u00e9rmica da interface, alcan\u00e7ando assim melhor condutividade t\u00e9rmica. Produtos com diferentes espessuras possuem diferentes deforma\u00e7\u00f5es por compress\u00e3o. Geralmente, a taxa de compress\u00e3o da deforma\u00e7\u00e3o por compress\u00e3o \u00e9 de 0,5 mm\/min. O efeito da espessura na deforma\u00e7\u00e3o por compress\u00e3o das almofadas t\u00e9rmicas \u00e9 mostrado em: <\/span><\/span><span style=\"font-size:12.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura<\/font><\/span><\/span><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">&nbsp;1.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><a id=\"2.3\" name=\"2.3\"><\/a><img decoding=\"async\" src=\"\/media\/145\/Figure1%20Influence%20of%20Thickness%20on%20Compression%20Deformation%20of%20Thermal%20Gasket.png\"><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura 1: <\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Open Sans'\">Influ\u00eancia da Espessura na Deforma\u00e7\u00e3o por Compress\u00e3o da Junta T\u00e9rmica<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Pode-se observar na Figura 1 que, sob a mesma press\u00e3o, quanto maior a espessura, maior o ajuste por compress\u00e3o. Geralmente, a deforma\u00e7\u00e3o por compress\u00e3o de produtos espessos deve atingir mais de 60% (geralmente inferior a 0,69 MPa), e os produtos podem ser selecionados inicialmente conforme a curva de deforma\u00e7\u00e3o por compress\u00e3o.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"23_Effect_of_thickness_on_the_thermal_resistance_of_heat-conducting_gasket\"><\/span><span style=\"font-size:22px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.3 Efeito da espessura na resist\u00eancia t\u00e9rmica da junta t\u00e9rmica<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Uma das caracter\u00edsticas de uma junta t\u00e9rmica condutora de alto desempenho \u00e9 a baixa resist\u00eancia t\u00e9rmica. Quanto menor a resist\u00eancia t\u00e9rmica, melhor o efeito de condu\u00e7\u00e3o de calor. A resist\u00eancia t\u00e9rmica de produtos com diferentes espessuras \u00e9 diferente. Consulte a Fig. 2 para a influ\u00eancia da espessura na resist\u00eancia t\u00e9rmica da junta condutora de calor.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><a id=\"2.4\" name=\"2.4\"><\/a><img decoding=\"async\" src=\"\/media\/145\/Figure2%20Effect%20of%20thickness%20on%20the%20thermal%20resistance%20of%20heat-conducting%20gasket.png\"><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura 2 Efeito da espessura na resist\u00eancia t\u00e9rmica da junta condutora de calor<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Observa-se na Figura 2 que quanto maior a espessura do produto, maior a resist\u00eancia t\u00e9rmica. A resist\u00eancia t\u00e9rmica de produtos com a mesma espessura diminui linearmente com o aumento da press\u00e3o. A espessura do produto \u00e9 determinada pelo projeto do elemento condutor de calor. A largura do v\u00e3o da unidade de projeto condutora de calor corresponde \u00e0 espessura do produto.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"24_Effect_of_instantaneous_and_long-term_pressure_on_the_compressive_deformation_of_thermally_conductive_gaskets\"><\/span><span style=\"font-size:22px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.4 Efeito da press\u00e3o instant\u00e2nea e de longo prazo na deforma\u00e7\u00e3o por compress\u00e3o das juntas t\u00e9rmicas<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Os resultados dos testes de press\u00e3o instant\u00e2nea e de longo prazo na junta t\u00e9rmica condutora s\u00e3o mostrados na Tabela 2<\/span><\/span><span style=\"font-size:12.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">.<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<table class=\"MsoTableGrid\" style=\"border-collapse:collapse; margin-left:6.7500pt; margin-right:6.7500pt; border:1.0000pt solid #fcfcfc; font-family:&quot;Times New Roman&quot;; font-size:10pt\">\n<tbody>\n<tr>\n<td colspan=\"3\" style=\"border-bottom:1.0000pt solid #fcfcfc; background:#5a5a5a; width:426.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"568\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#ffffff;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Tabela 2<\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Times New Roman\">:<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">&nbsp;Efeito da press\u00e3o instant\u00e2nea e de longo prazo na deforma\u00e7\u00e3o compressiva das juntas t\u00e9rmicas condutoras<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Deforma\u00e7\u00e3o por compress\u00e3o<\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">\/%<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Deforma\u00e7\u00e3o transit\u00f3ria<\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">\/MPa<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Tens\u00e3o cr\u00f4nica<\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">\/MPa<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">10<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.06<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">20<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.14<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.01<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">30<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.26<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.04<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\"><a id=\"2.5\" name=\"2.5\"><\/a>40<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.40<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.07<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">50<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.51<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.09<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:148.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"197\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">60<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:136.0000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"181\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.68<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:142.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"189\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">0.11<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin: 0pt 0pt 0.0001pt 40px; text-align: justify;\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Open Sans'\">Nota: 1) Taxa de teste 25,4 mm\/min, Espessura 2 mm<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">A Tabela 2 mostra que, a uma taxa de compress\u00e3o de 25,4 mm\/min, \u00e9 necess\u00e1ria uma press\u00e3o instant\u00e2nea de 0,259 MPa para atingir uma deforma\u00e7\u00e3o por compress\u00e3o de 30% e uma press\u00e3o de longo prazo de 0,037 MPa para manter a deforma\u00e7\u00e3o por compress\u00e3o de 30%. As press\u00f5es instant\u00e2nea e de longo prazo est\u00e3o pr\u00f3ximas da aplica\u00e7\u00e3o e s\u00e3o muito f\u00e1ceis de usar.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"25_The_effect_of_peel_force_on_the_operational_performance_of_thermally_conductive_gaskets\"><\/span><span style=\"font-size:22px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.5 Efeito da for\u00e7a de descolamento no desempenho operacional das juntas t\u00e9rmicas<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Com uma alta adi\u00e7\u00e3o de cargas t\u00e9rmicas, a condutividade t\u00e9rmica da junta t\u00e9rmica \u00e9 alta, mas o produto fica menos resistente por si s\u00f3 e, em casos graves, tamb\u00e9m mancha os componentes eletr\u00f4nicos e o produto apresenta defeitos ambientais. Portanto, o projeto de juntas t\u00e9rmicas de alto desempenho deve levar em considera\u00e7\u00e3o a rela\u00e7\u00e3o entre a for\u00e7a de descascamento e a operabilidade do produto. De modo geral, produtos finos exigem maior trabalhabilidade do que produtos grossos. Mesmo que a junta n\u00e3o contamine o filme de libera\u00e7\u00e3o, uma junta fina com alta for\u00e7a de descascamento levantar-se-\u00e1 e deslocar-se-\u00e1 durante a remo\u00e7\u00e3o do <a id=\"2.6\" name=\"2.6\"><\/a>filme, afetando seu uso. O efeito da for\u00e7a de descascamento na operabilidade das juntas t\u00e9rmicas condutoras de calor \u00e9 mostrado na Tabela 3.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<table class=\"MsoTableGrid\" style=\"border-collapse:collapse; border:1.0000pt solid #fcfcfc; font-family:&quot;Times New Roman&quot;; font-size:10pt\">\n<tbody>\n<tr>\n<td colspan=\"2\" style=\"border-bottom:1.0000pt solid #fcfcfc; background:#5a5a5a; width:426.1000pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"568\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#ffffff;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Times New Roman\">Tabela 3: <\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Influ\u00eancia da for\u00e7a de descascamento na operabilidade da junta t\u00e9rmica condutora de calor<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">For\u00e7a de descascamento<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:1.0000pt solid #fcfcfc\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Operabilidade<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">20<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#f2f2f2; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Manuten\u00e7\u00e3o de filmes de libera\u00e7\u00e3o<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">12<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#e4e4e4; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Filme de libera\u00e7\u00e3o n\u00e3o manchante, f\u00e1cil de deslocar<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:1.0000pt solid #fcfcfc; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">8<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<td style=\"border-bottom:1.0000pt solid #fcfcfc; background:#ffffff; width:213.0500pt; padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt ; border-left:none; border-right:1.0000pt solid #fcfcfc; border-top:none\" valign=\"top\" width=\"284\">\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:'Times New Roman'\">Filme de libera\u00e7\u00e3o n\u00e3o manchante, sem deslocamento<\/span><\/span><\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Como visto na Tabela 3, para uma junta t\u00e9rmica de 0,8 mm, a opera\u00e7\u00e3o \u00e9 pobre quando a for\u00e7a de descascamento \u00e9 maior que 12g\/25mm, e melhor quando a for\u00e7a de descascamento \u00e9 de 8g\/25mm. Como quanto mais grosso o produto, mais f\u00e1cil \u00e9 remover o filme de libera\u00e7\u00e3o, apenas produtos finos s\u00e3o discutidos neste experimento.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 style=\"margin-top: 13pt; margin-bottom: 13pt; text-align: justify; margin-left: 40px;\"><span class=\"ez-toc-section\" id=\"26_Reliability_of_thermal_pads\"><\/span><span style=\"font-size:22px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Calibri\"><b><span style=\"font-family:'Open Sans'\">2.6 Confiabilidade das almofadas t\u00e9rmicas<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">A atualiza\u00e7\u00e3o de um novo produto geralmente requer um teste de compara\u00e7\u00e3o de confiabilidade. O teste de confiabilidade inclui teste de envelhecimento em alta temperatura, teste de envelhecimento por choque t\u00e9rmico e teste de envelhecimento em calor \u00famido. No processo de atualiza\u00e7\u00e3o do produto, o cliente exige que a condutividade t\u00e9rmica da junta t\u00e9rmica n\u00e3o seja menor do que a da amostra de refer\u00eancia original ap\u00f3s o envelhecimento por 440 horas. Os resultados do teste de confiabilidade s\u00e3o mostrados da Figura 3 \u00e0 Figura 5.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><img decoding=\"async\" src=\"\/media\/145\/Figure3%20High%20temperature%20aging%20of%20heat%20conducting%20gasket.png\"><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura<\/font><\/span><\/span>&nbsp;<span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">3<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">:<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\">&nbsp;<font face=\"Open Sans\">Envelhecimento em alta temperatura da junta t\u00e9rmica condutora de calor<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\">&nbsp;<\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><img decoding=\"async\" src=\"\/media\/145\/Figure4%20Thermal%20shock%20aging%20of%20heat%20conducting%20gasket.png\"><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura<\/font><\/span><\/span>&nbsp;<span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">4<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">: <\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Envelhecimento por choque t\u00e9rmico da junta t\u00e9rmica condutora de calor<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\">&nbsp;<\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><img decoding=\"async\" src=\"\/media\/145\/Figure5%20Heat%20and%20moisture%20aging%20of%20thermal%20conductive%20gaskets.png\"><\/p>\n<p align=\"center\" style=\"text-align:center; margin:0pt 0pt 0.0001pt\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">Figura<\/font><\/span><\/span>&nbsp;<span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">5<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\"><font face=\"Open Sans\">:<\/font><\/span><\/span><span style=\"font-size:11.0000pt\"><span style=\"font-family:\u5b8b\u4f53\">&nbsp;<font face=\"Open Sans\">Envelhecimento por calor e umidade das juntas t\u00e9rmicas condutoras de calor<\/font><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"3\" name=\"3\"><\/a>Pode-se observar da Figura 3 \u00e0 Figura 5 que a resist\u00eancia t\u00e9rmica da junta t\u00e9rmica \u00e9 menor do que a da amostra de refer\u00eancia durante o processo de envelhecimento a 150 \u00b0C por 440 h; a resist\u00eancia t\u00e9rmica da junta t\u00e9rmica \u00e9 menor do que a da amostra de refer\u00eancia durante o processo de envelhecimento por choque t\u00e9rmico de 440 h; o processo de envelhecimento por calor \u00famido de 440 h, a resist\u00eancia t\u00e9rmica da junta t\u00e9rmica \u00e9 menor do que a da amostra de refer\u00eancia.<\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\">&nbsp;<\/p>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">Em resumo, a confiabilidade atualizada das juntas t\u00e9rmicas da mesma espessura \u00e9 melhor do que a das amostras de refer\u00eancia originais.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h2 style=\"margin-top:13pt; margin-bottom:13pt; text-align:justify\"><span class=\"ez-toc-section\" id=\"3_Conclusion\"><\/span><span style=\"font-size:28px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Arial\"><b><span style=\"font-family:'Open Sans'\">3. Conclus\u00e3o<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"margin:0pt 0pt 0.0001pt; text-align:justify\"><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\"><a id=\"XJY\" name=\"XJY\"><\/a>Uma junta t\u00e9rmica de alto desempenho \u00e9 preparada usando \u00f3leo de silicone reativo como base e alumina e nitreto de alum\u00ednio como carga t\u00e9rmica. A f\u00f3rmula preferida \u00e9: 80 g de \u00f3leo de silicone vin\u00edlico de baixa viscosidade, 8 g de \u00f3leo de silicone vin\u00edlico de alta viscosidade, 6 g de \u00f3leo de silicone contendo hidrog\u00eanio, 5 g de resina de silicone modificada, 1,0 g de catalisador e 0,2 g do inibidor s\u00e3o adicionados ao tanque de agita\u00e7\u00e3o e agitados por 0,5 h, e evacuado para remover bolhas de ar; em seguida, adicionar 55 g de nitreto de alum\u00ednio, agitar por 0,5 h, depois adicionar 445 g de alumina, agitar uniformemente e, em seguida, fazer v\u00e1cuo para remover bolhas de ar; finalmente, adicionar 402 g de alumina esf\u00e9rica, agitar por 0,5 h e fazer v\u00e1cuo para remover bolhas de ar. A condutividade t\u00e9rmica do produto preparado por esta f\u00f3rmula atinge 4,0 W\/(m\u00b7K), que \u00e9 f\u00e1cil de operar e usar, e tem boa confiabilidade, podendo atender aos requisitos dos clientes para juntas t\u00e9rmicas condutoras de calor de alto desempenho.<\/span><\/span><\/span><\/span><\/span><\/p>\n<h2 style=\"margin-top:13pt; margin-bottom:13pt; text-align:justify\"><span class=\"ez-toc-section\" id=\"XJY_Silicones_%E2%80%93_First_choice_raw_material_supplier_of_silicone_thermally_conductive_materials\"><\/span><span style=\"font-size:28px;\"><span style=\"color:#000000;\"><span style=\"line-height:172%\"><span style=\"font-family:Arial\"><b><span style=\"font-family:'Open Sans'\">Silicone XJY<\/span><\/b><b><span style=\"font-family:'Open Sans'\">s <\/span><\/b><b><span style=\"font-family:'Open Sans'\">\u2013<\/span><\/b><b>&nbsp;<\/b><b><span style=\"font-family:'Open Sans'\">Fornecedor preferencial de mat\u00e9ria-prima de materiais de silicone termicamente condutores<\/span><\/b><\/span><\/span><\/span><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width: 100%;\">\n<tbody>\n<tr>\n<td><span style=\"color:#000000;\"><span style=\"font-size:10.5pt\"><span style=\"font-family:Calibri\"><span style=\"font-size:12.0000pt\"><span style=\"font-family:'Open Sans'\">A XJY Silicones, uma das principais <a href=\"https:\/\/www.xjysilicone.com\/pt\/methyl-mq-silicone-resin.html\/\">Resina de silicone MQ<\/a> e <a href=\"https:\/\/www.xjysilicone.com\/pt\/vmq.html\/\">VMQ<\/a> Os fabricantes de silicones termicamente condutivos possuem 30+ anos de experi\u00eancia em P&amp;D e manufatura, com assist\u00eancia t\u00e9cnica de 15+ patentes relacionadas na ind\u00fastria de silicone, e tamb\u00e9m podem personalizar produtos de silicone termicamente condutivo com custo-benef\u00edcio conforme os requisitos dos seus dispositivos eletr\u00f4nicos.<\/span><\/span><\/span><\/span><\/span><\/td>\n<td><img decoding=\"async\" src=\"\/media\/145\/XJY%20SILICONES.jpg\" style=\"height: 140px; width: 250px;\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<\/p><\/div>\n<\/article><\/div>","protected":false},"excerpt":{"rendered":"<p>Com o desenvolvimento de produtos eletr\u00f4nicos para miniaturiza\u00e7\u00e3o, multifuncionalidade e alto desempenho, a tecnologia de integra\u00e7\u00e3o de sistemas 3D de alta densidade surgiu. A integra\u00e7\u00e3o tridimensional de sistemas torna a efici\u00eancia de montagem alta, a velocidade de transmiss\u00e3o de sinais r\u00e1pida e a confiabilidade do sistema melhor. Com essas vantagens, devido ao enorme consumo de energia, tamb\u00e9m levar\u00e1 a um aumento no calor por unidade...<\/p>","protected":false},"author":12,"featured_media":27245,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[610],"tags":[],"class_list":["post-27244","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronic"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/posts\/27244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/comments?post=27244"}],"version-history":[{"count":0,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/posts\/27244\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/media\/27245"}],"wp:attachment":[{"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/media?parent=27244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/categories?post=27244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xjysilicone.com\/pt\/wp-json\/wp\/v2\/tags?post=27244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}