Room temperature vulcanized silicone rubber generally includes condensation type and molding two categories. Adding molding room temperature glue is a linear polysiloxane with vinyl as the base glue, with hydrogen siloxane as the crosslinking agent, in the presence of catalyst at room temperature to medium temperature crosslinking reaction and become an elastomer. It has good heat resistance, hydrophobicity, electrical insulation, at the same time because of the introduction of active end group, make it has excellent physical and mechanical properties, especially in the tensile strength, relative elongation and tear strength has been significantly improved. It is suitable for a variety of vulcanization methods, such as radiation vulcanization, peroxide vulcanization and molding vulcanization, widely used in heat, moisture, electrical insulation, high strength silicone rubber products and other aspects.

The condensation type RTV silicone rubber is characterized by the condensation reaction between silicon hydroxyl and other active substances, and can be cross-linked to become an elastomer at room temperature. The product is divided into one component packaging and two component packaging. One component room temperature vulcanized silicone rubber (RTV-1 rubber) is one of the main products of condensed liquid silicone rubber. Usually from the base polymer, crosslinking agent, catalyst, filler and additives and other preparation. The product is packaged in sealed hose, extruded during use, can be self-vulcanized into elastomer after contact with air, it is very convenient to use. Vulcanized rubber can be used in the (-60 ~ +200℃) temperature range for a long time, with excellent electrical insulation performance and chemical stability, water resistance, ozone resistance, weather aging resistance, a variety of metal and non-metal materials have good bonding. Mainly used for various electronic components and electrical equipment coating, sealing material insulation, moisture-proof, shockproof effect; As a surface protection material of semiconductor devices; It can also be used as sealing filler and elastic adhesive.

Two-component room temperature vulcanized silicone rubber (rTV-2 rubber) is not used rTV-1 rubber convenient, but its composition ratio rich change, a variety of specifications of the performance of vulcanized products, but also can be deep vulcanization, Therefore, it is widely used in electronic and electrical appliances, automobile, machinery, construction, textile, chemical industry, light industry, printing and other industries as insulation, packaging, caulking, sealing, moisture-proof, seismic and roll production materials. In addition, because rTV-2 has excellent demudding, so as a soft mold material is widely used in cultural relics, handicrafts, toys, electronic appliances, mechanical parts and other replication and manufacturing.

One of the typical applications of silicone sealant is glass curtain walls. The glass and aluminum alloy frame are bonded with silicone structural adhesive as the external wall material, and the expansion joint is waterproof and sealed with silicone weatherproof adhesive. Other applications also include the surrounding sealing of aluminum alloy doors and Windows and plastic steel doors and Windows, glass installation and moving groove seam, rivets and fixed screw sealing: kitchen, bathroom, bathroom sanitary ware and table, wall, furniture waterproof sealing; Aquarium, ceiling, metal top cover, window, counter, wall panel, color steel plate sealing; Used for waterproof caulking and sealing between plates of high-grade highway.

In addition to building sealant, RTV also includes sealing materials for aerospace, nuclear power plants, electronics, machinery, automotive and other industries, silicone potting materials for electronic components, silicone mold glue for soft mold materials, etc. These varieties are in relatively low demand, but in many cases are essential.