High temperature resistant silicone rubber temperature use planning -70 deG C -+350 DEG C, commonly used is a kind of called methyl phenyl vinyl silicone rubber, it is in the molecular chain of methyl vinyl silicone rubber in the introduction of methyl phenyl silicon oxygen chain or diphenyl silicon oxygen chain and products. The introduction of phenyl on the side group of polysiloxane greatly reduces the crystallization temperature of the polymer because of the destruction of the regularity of the structure of dimethylsiloxane, and expands the low temperature application planning of the polymer data.

Phenyl content 20~40% called phenyl silicone rubber, it has excellent fire resistance, once ignited can be self-extinguishing. Phenyl content in 40~50% called high phenyl silicone rubber, it has excellent radiation resistance function, γ -ray resistance for 1xI08 rogen. Generally speaking, with the addition of phenyl content, the rigidity of silicone rubber molecular chain gradually increases, and the low temperature resistance function of silicone rubber gradually decreases, but with the addition of phenyl content, the fire resistance and radiation resistance of vulcanized rubber are improved. Food grade silicone products

Methyl phenyl vinyl silicone rubber is one of the important materials of aerospace industry, cutting-edge technology and other parts of the national economy. It can be used to make all kinds of moulded and extruded products for cold rubber in aviation industry and sealing rings, pads, pipes and rods for ablative resistance, heat aging resistance or radiation resistance.

Therefore, in addition to methyl phenyl vinyl silicone rubber has all the shrinkage permanent deformation of methyl vinyl silicone rubber, wide temperature planning, oxidation resistance, weather resistance, shockproof, moistureproof and excellent electrical insulation function, but also has excellent low temperature resistance, ablative resistance and irradiation resistance. These functions vary with the content of phenyl in the molecular chain. Generally speaking, the content of phenyl (the ratio of phenyl and silicon atoms) is 5~10% when it is called low phenyl silicone rubber. It can still adhere to the elasticity of rubber at -70[size=10.5pt]~-100℃, and is the best low temperature function of all rubber. In addition, it has the interests of methyl vinyl silicone rubber and the cost is not high, so it has a trend to replace methyl vinyl silicone rubber. The special components contained in high temperature resistant silicone rubber can promote its excellent application function in the power industry, and can play an important value and trend.