Methyl vinyl silicone rubber
Because the vulcanization processing properties of silicone rubber can be greatly improved by introducing a small amount of vinyl into the macromolecular structure of silicone rubber, most of the silicone rubber currently used contain vinyl. Methyl vinyl silicone rubber is one of the most common silicone rubber, and currently plays a leading role in the production of silicone rubber at home and abroad. Due to the introduction of partially unsaturated vinyl group into the side chain, the processability and physical and mechanical properties of the silicone rubber are superior to those of the two silicone rubber. In addition to the general characteristics of dimethyl silicone rubber, it also has a wide range of temperature. It can maintain good elasticity in the range of 160-260 C. It is easier to vulcanize than dimethyl silicone rubber. It has smaller compression permanent deformation, better solvent swelling resistance, high pressure vapor stability and excellent cold resistance. Moreover, the vulcanization with lower activity peroxide reduces the vulcanization vulnerability of air bubbles and poor rubber stability. Therefore, methyl vinyl silicone rubber can be used to make products with large thickness. Methyl vinyl silicone rubber is the most widely used variety of silicone rubber. In recent years, a variety of silicone rubber with high performance and special uses have been emerging, mostly based on vinyl silicone rubber, such as high strength silicone rubber, low compression permanent deformation silicone rubber, post-vulcanization silicone rubber, heat-resistant conductive silicone rubber and medical applications. Silicone rubber, etc. In the aviation industry, methyl vinyl silicone rubber is widely used as gasket, sealing material and protective layer of fragile and shock-proof parts; in the electrical industry, it can be used as high-grade insulating material such as electronic components, dynamic sealing ring of high-temperature potentiometer, sealing ring of underground long-distance communication equipment; in medicine, due to methyl vinyl silicone rubber. The glue has little physiological reaction to human body and is non-toxic, so it can be used for surgical plastic surgery, artificial heart valves, blood vessels and so on.