Dimethyl silicone rubber and the molecular structure of the methyl vinyl silicone rubber, suitable temperature and how much is the range of application
dimethyl silicone rubber and the molecular structure of the methyl vinyl silicone rubber, suitable temperature, and the range is how much? Show you details about the two kinds of silicone rubber category.
dimethyl silicone rubber
dimethyl silicone rubber or methyl silicone rubber, silicone rubber is the oldest species, in - 60 ℃ ~ 250 ℃ temperature range can keep good elasticity. Because of the low sulfide activity, process performance is poor, wall thickness products during secondary sulfide used bubble, shortcomings, such as high compression deformation is big at present, besides a few used in fabric coated has been replaced by methyl vinyl silicone rubber.
the molecular structure is as follows:
applicable temperature: - 60 ℃ ~ 250 ℃
scope of application: making the heat sealing pipe fitting, gasket, roller and waterproof, moisture-proof insulation materials, efficient release agent. Widely used in mechanical and electrical, aviation, automotive and medical industries.
methyl vinyl silicone rubber
methyl vinyl silicone rubber or vinyl silicone rubber, is by dimethyl siloxane and a small amount of vinyl silane copolymerization, vinyl content in 0. 1 to 0. 3mol%。
the molecular structural formula is as follows:
use temperature: - 70 ℃ ~ 300 ℃
methyl vinyl silicone rubber properties:
1. The introduction of a small amount of unsaturated vinyl makes its vulcanization technology and product properties, especially heat aging and high temperature compression deformation resistance is a great improvement.
2。 Of methyl vinyl siloxane content on the curing effect and has a great impact on the heat resistance of vulcanized rubber content is not significant, the less content is too large, 0. 5摩尔%) Can reduce the heat resistance of vulcanized rubber.
application in the production of silicone rubber, methyl vinyl silicone rubber is most productive, the most widely used, in addition to a large number of applications of general-purpose rubber, all kinds of specificity of silicone rubber and processing characteristics are based on its process, such as high strength of silicone rubber, silicone rubber, low compression permanent deformation conductive silicone rubber, thermal conductive silicone rubber, and simple operation without secondary vulcanization silicone rubber, silicone rubber particles, etc.
that is related to dimethyl silicone rubber, methyl vinyl silicone rubber finishing, hope everyone to dimethyl silicone rubber, methyl vinyl silicone rubber has a deeper understanding, choose the silicone rubber products factory in guangdong area preferred shenzhen plant 10 old factory professional and more efficient.
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