Dimethyl silicone rubber is one of the earliest commercially available silicone rubbers. It can maintain good elasticity in the range of -60 to 200 ° C, good aging resistance, excellent electrical ins......
2019-11-29Since the introduction of a small amount of vinyl into the macromolecular structure of silicone rubber can greatly improve the curing performance of silicone rubber, most of the currently used silicon......
2019-11-291. Raw materials Mold silicone rubber generally consists of a base rubber, a cross-linking agent, a catalyst, and a filler. (1) The base rubber is 107 silicone rubber, which is called hydroxyl-termi......
2019-11-28Improved design of flash grooves and exhaust systems Increase the pressure of the press Reduce the amount of release agent and spray evenly Materials control moisture Try adding some defoamer Use......
2019-11-28Silicone rubber can be divided into thermal vulcanization type (high temperature vulcanized silica gel HTV) and room temperature vulcanization type (RTV) according to its vulcanization mechanism. Amon......
2019-11-281. Component B is a catalyst, which is susceptible to moisture hydrolysis, so the lid should be tightly closed after use. 2. As soon as the A and B groups are mixed, the chemical reaction begins; t......
2019-11-281. The final impression should cover the entire crown and gingival margin 2. Complete dentition 3. The crowns and gingival margins are clear and complete, without bubble cavities, defects and wrinkl......
2019-11-28Silicone rubber is a polymer synthetic rubber, which is an elastic irreversible impression material. In recent years, it has been widely used in the medical field. As the impression material, it mainl......
2019-11-28(1) High and low temperature resistance Among all rubbers, silicone rubber has the widest working temperature range (-100 to 350 ° C). For example, a properly formulated vinyl silicone rubber or lo......
2019-11-28Inorganic silicone rubber is a highly active adsorption material, usually made by reacting sodium silicate with sulfuric acid and undergoing a series of post-treatment processes such as aging and acid......
2019-11-28Room temperature vulcanized silicone rubber generally includes two types of condensation and addition molding. The addition molding room temperature adhesive is a linear polysiloxane with a vinyl grou......
2019-11-28Heat-vulcanized silicone rubber (HTV) is the most important type of silicone products. Methyl vinyl silicone rubber (VMQ) is the most important type of HTV, commonly known as high-temperature rubber. ......
2019-11-28Cause: Due to the large water permeability of silicone rubber, especially the mixing rubber made by precipitation silica, the moisture content of the mixing rubber increases linearly with the increase......
2019-11-27I personally think that the factors and solutions that affect the rubber resilience and vulcanization speed can be carried out from the following aspects: ① The vinyl content in the rubber is not e......
2019-11-27Transparent paste-like odorless anti-yellowing vulcanizing agent. It is a mixture of peroxide and raw rubber carrier. It is also used in the molding and vulcanizing process of silicone products. Produ......
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