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Room temperature vulcanized silicone rubber around us

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Room temperature vulcanized silicone rubber is not only tasteless and non-toxic, and is not afraid of high temperature and cold weather, but also has good electrical insulation, oxygen resistance and aging resistance, light resistance and aging resistance, mildew resistance and chemical stability. It generally includes two categories: condensation type and addition type, and can be widely used in various fields.

The addition molding room temperature vulcanized silicone rubber is based on linear polysiloxane with vinyl groups as the base rubber, with hydrogen containing siloxane as the crosslinking agent. In the presence of a catalyst, it undergoes crosslinking reaction at room temperature to medium temperature to become an elastomer. It has good heat resistance, hydrophobicity, electrical insulation, and excellent physical and mechanical properties, especially in terms of tensile strength, relative elongation, and tear strength, due to the introduction of active end groups.
The condensation type RTV silicone rubber is characterized by the Condensation reaction between the silicone hydroxyl group and other active substances, and can be crosslinked into an elastomer at room temperature. It has excellent electrical insulation performance and chemical stability, can withstand water, ozone, and weather aging, and has good adhesion to various metal and non-metallic materials.

Room temperature vulcanized silicone rubber is widely used in industries such as electronics, automobiles, machinery, construction, textiles, chemicals, light industry, printing, etc., as a material for insulation, encapsulation, caulking, sealing, moisture-proof, seismic resistance, and roller production.

One of the typical applications is glass curtain wall, where the glass and aluminum alloy frame are bonded with silicone structural adhesive as the external wall material, and the Expansion joint is waterproof sealed with silicone weather resistant adhesive.

Other applications include peripheral sealing for aluminum alloy doors and windows and plastic steel doors and windows, sealing for glass installation and moving slots, rivets, and fixing screws, as well as waterproof sealing between sanitary fixtures and countertops, walls, and furniture in kitchens, bathrooms, and restrooms; Sealing of aquariums, ceilings, metal roofs, display windows, counters, wall panels, color steel plates, etc.

Room temperature vulcanized silicone rubber, in addition to building sealants, also includes sealing materials used in industries such as aerospace, nuclear power plants, electronics, machinery, and automobiles, organic silicon sealing materials used for electronic component sealing, and organic silicon mold adhesives used for soft mold materials. The demand for these varieties is relatively small, but they are indispensable in many occasions.
Room temperature vulcanized silicone rubber has gained widespread and important applications in modern medicine, such as noise resistant earplugs, fetal head suction devices, artificial blood vessels, and so on.

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