The methyl hydrogen silicone oil is prone to cross-linking reaction due to a certain amount of relatively active Si-H bond in the molecule, and can be used as a crosslinking agent for the addition of liquid silicone rubber under the catalysis of Pt catalyst. Under the action of metal salts and catalysts, methyl hydrogen silicone oil can form a hydrophobic film on the surface of various substances at a lower temperature. The Si-H bond is easily broken under alkaline conditions:
It can be seen from the structure that the biggest difference between the methyl hydrogen silicone oil and the two silicone oils described above is that the silicon-oxygen bond contains a hydrogen-silicon structure. The Si-H bond is easily broken under alkaline conditions, so the alkali resistance of the methyl hydrogen silicone oil is weaker than other silicone oils.
Methyl Hydrogen Silicone Oil CAS No: 63148-57-2 Performance parameters:
Refractive index (25 ° C): 1.390 ~ 1.410
Hydrogen content (%, m/m) ≥: 1.55
Explain as follows:
Appearance: The external form of silicone oil. Hydrogen-containing methyl hydrogen silicone oils are generally colorless or yellowish transparent liquids. When we introduced the identification of true and false silicone oils, it was mentioned that inferior silicone oils are usually turbid. The color of silicone oil is an important criterion for distinguishing the quality of silicone oil.
Hydrogen content: The maximum difference between methyl hydrogen silicone oils and other silicone oils. One person who is familiar with methyl silicone oil can see at a glance that the amount of hydrogen in the molecular structure is determined by the amount of N in the molecular structure because the terminal groups of the general methyl silicone oil are the same.
Kinematic Viscosity: This is mentioned in the introduction of the first two types of silicone oil. The kinematic viscosity refers to the ratio of the dynamic viscosity and density of the liquid at the same temperature.
Specific gravity: The ratio of the volume to the density of a substance.
Refractive index: Refractive index can be used as a measure of liquid purity and can be used to determine liquid composition.
Acid value: A measure of the acidity and alkalinity of a product. The pH value of a silicone oil product represented by the above parameters is generally between 6 and 8.
Advantages and uses of Methyl Hydrogen Silicone Oil CAS No: 63148-57-2
The biggest advantage of methyl hydrogen silicone oil is its good waterproof effect. It can be crosslinked into a film at a low temperature by a metal salt catalyst, and a waterproof film can be formed on the surface of various materials. It can be used as a waterproofing agent for various materials such as fabric, glass, ceramic, paper, leather, metal, cement, marble. Especially in the waterproof application of fabrics. It is compatible with methyl hydrogen silicone oil emulsion, which can not only waterproof but also maintain the original breathability and softness of the fabric and can improve the tear strength, friction strength and antifouling property of the fabric. In addition, it can also be used as a paper release agent and the cross-linking agent, as well as a foaming agent for foamed silicone rubber.