Due to the fact that introducing a small amount of vinyl groups into the macromolecular structure of silicone rubber can greatly improve its vulcanization processing performance, most of the silicone rubber currently used contains vinyl groups. Methyl vinyl silicone rubber is the most common type of silicone rubber and currently dominates the production of silicone rubber both domestically and internationally. Due to the introduction of partially unsaturated vinyl groups on the side chain, its processing performance and physical and mechanical properties are superior to those of di silicone rubber. In addition to the general characteristics of dimethyl silicone rubber, it also has a wide range of operating temperatures and can maintain good elasticity within the range of 60-260 ℃.

It is easier to cure than dimethyl silicone rubber, with smaller compression set, better resistance to solvent expansion, high pressure steam stability, and excellent cold resistance. Moreover, due to the use of less active peroxides for vulcanization, the generation of bubbles and poor rubber stability during vulcanization are reduced. Weakness. Therefore, methyl vinyl silicone rubber can generally be used to manufacture thicker products. Methyl vinyl silicone rubber is the most widely used variety of silicone rubber. In recent years, various high-performance and special-purpose silicone rubbers have emerged, mostly based on vinyl silicone rubber, such as high-strength silicone rubber, low compression permanent deformation silicone rubber, post vulcanization free silicone rubber, heat-resistant conductive silicone rubber, and medical silicone rubber.

In the aviation industry, methyl vinyl silicone rubber is widely used as a gasket, sealing material, and protective layer for fragile and shock resistant components; In the electrical industry, it can be used as advanced insulation materials such as electronic components, dynamic sealing rings for high-temperature potentiometers, and sealing rings for underground long-distance communication equipment; In medicine, methyl vinyl silicone rubber is used for surgical plastic surgery, artificial heart valves, blood vessels, etc. due to its low physiological response to the human body and non toxicity.

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