VMQ silicone rubber
is abbreviated as vinyl silicone rubber. It is a copolymer of
dimethyl siloxane and a small amount of vinyl siloxane. The vinyl content is
generally from 0.1% to 0.3% (molar fraction). The introduction of a small
amount of unsaturated vinyl gives it a vulcanization process and finished
product properties. In particular, heat aging resistance and high temperature
compression deformation are greatly improved. The content of the
methylvinylsiloxane unit has a great influence on the vulcanization and the
heat resistance of the vulcanizate. If the content is too small, the effect is
not significant. If the content is too large( up to 0.5% molar fraction), the
heat resistance of the vulcanizate will lower.
Molecular formula of VMQ silicone: C2H3 [Si(CH3)2O]n [Si(CH3)(C2H3)O]mC2H3
Structure of VMQ silicone:
1. It is resistant to high and low temperature
and can work for a long time at -50~250 °C.
2. It is moisture-proof, electrically
insulating, resistant to arcing and corona.
3. It is resistant to aging and ozone
4. It has a non-sticky surface and water
5. It has small compression deformation and
is resistant to saturated steam.
Precautions for VMQ silicone In case of fire or high heat, it is flammable. Keep away from fire and
heat. Avoid contact with strong acids, bases, lead metal and their compounds.
Use of VMQ
Methyl vinyl silicone rubber is mainly used in the production of various
silicone rubber compounds, such as insulator rubber, wire and cable extrusion
glue. In the application, one model can be used alone or in combination of two
or more models to meet the different requirements of the rubber compound.
Packaging and transportation of VMQ silicone
1. The product is packed in cardboard boxes
with clean and dry plastic bags lined with a net content of 25kg per box.
2. Transportation: When transporting the
product, it should be protected from rain and sun exposure, and transported as
non-dangerous goods. Lightly load and unload during handling to prevent damage
to the packaging.
3. Storage: The product should be stored in
a ventilated and dry warehouse to prevent direct sunlight. This product has a
storage period of 3 years from the date of production. If it exceeds the
storage period, it can be re-sampled and tested according to the standard. If
it meets the standard requirements, it can still be used.