Methyl-phenyl-vinyl silicone rubber is a methyl vinyl silicone rubber into the molecular chain of Si-O-methyl-phenyl-2-phenyl-chain section or section of Si-O-chain derived products. On the polysiloxane side groups on the introduction of phenyl, due to destruction of the structure of dimethyl siloxane regularity, greatly reduces the polymer crystallization temperature, the expansion of the polymer materials at low temperature applications. Thus, methyl phenyl vinyl silicone rubber addition to methyl vinyl silicone rubber all the compression permanent deformation is small, the use of a wide temperature range, anti-oxidation, weathering, vibration, humidity and good electrical insulation properties, but also excellent resistance to low temperature ablation resistance and anti-radiation properties. these properties with the molecular chain in the phenyl content vary, in general, phenyl content (the ratio of phenyl and silicon atoms) in 5 ~ 10% Low-phenyl, said silicone rubber, it has a unique resistance to cold can, in the -70 ~ -100 ℃ remain flexible rubber, all rubber in the best performance of a low-temperature, combined with it both methyl vinyl silicone and cost advantages of rubber is not high, so much the trend to replace methyl vinyl silicone rubber. Phenyl content of 20 ~ 40%, said that in the phenyl silicone rubber, which has excellent flame characteristics, once the fire can be self-extinguishing. Phenyl content of 40 ~ 50%, said high-phenyl silicone rubber, it has excellent resistance to radiation performance, resistance to γ-rays as 1xI08 Roentgen. In general, as the phenyl content increased, the rigidity of molecular chain silicone rubber is gradually increasing, low-temperature-resistant properties of silicone rubber decreased gradually, but with the phenyl content increased, improved vulcanizate flame resistance and Radiation according to sex. Methyl phenyl vinyl silicone rubber is the aerospace industry, cutting-edge technology and other sectors of the national economy, one of the important materials available for the system to do a variety of molded and extruded products for the aviation industry's cold-resistant rubber and used for ablation, heat aging or radiation-resistant parts of the seals, pads, tubes and bars and so on.