RTV silicone rubber is not only odorless, non-toxic, not afraid of high temperature and resistant to severe cold, but also has good electrical insulation, oxygen resistance, aging resistance, light resistance, aging resistance, mildew resistance, chemical stability, etc. Generally, it includes two categories: condensation type and addition type, which can be widely used in various fields.

Addition type RTV silicone rubber is based on linear polysiloxane with vinyl group as base rubber and hydrogen-containing siloxane as cross-linking agent. In the presence of catalyst, cross-linking reaction occurs at room temperature to medium temperature to become elastomer . It has good heat resistance, hydrophobicity, electrical insulation, and at the same time, due to the introduction of active end groups, it has excellent physical and mechanical properties, especially in tensile strength, relative elongation and tear strength. improvement.

Condensation RTV silicone rubber is a silicone rubber that is characterized by the condensation reaction between silanol groups and other active substances, and can be cross-linked into an elastomer at room temperature. It has excellent electrical insulation properties and chemical stability, water resistance, ozone resistance, weather resistance, and good adhesion to a variety of metal and non-metal materials.

RTV silicone rubber is widely used in electronic appliances, automobiles, machinery, construction, textile, chemical industry, light industry, printing and other industries, as insulation, packaging, caulking, sealing, moisture-proof, shock-resistant and roller materials. One of the typical applications is glass curtain wall. The glass and aluminum alloy frame are bonded with silicone structural adhesive as the exterior wall material, and the expansion joint is waterproof and sealed with silicone weather-resistant adhesive.

Other applications include perimeter sealing of aluminum alloy doors and windows and plastic steel doors and windows, sealing of glass installation and moving grooves, rivets and fixing screws: sanitary ware and countertops, walls, and furniture in kitchens, bathrooms, and toilets. Waterproof sealing between rooms; sealing of aquariums, ceilings, metal roofs, showcases, counters, wall panels, color steel plates, etc.

In addition to building sealants, room temperature vulcanized silicone rubber also includes sealing materials for aerospace, nuclear power plants, electronics, machinery, automobiles and other industries, silicone potting materials for electronic components potting, and soft mold materials. silicone mold glue, etc. These varieties are in relatively low demand, but are essential on many occasions.

RTV silicone rubber has been widely used in modern medicine, such as anti-noise earplugs, fetal head suction, artificial blood vessels and so on.