Silicone RTV application in the automotive field

1,the concept
RTV (Room Temperature Vulcanizing), an abbreviation for room temperature vulcanized silicone rubber, is a liquid silicone rubber widely used in bonding, fixing, sealing, potting, thermal conduction and coating in the fields of electronics, electrical, automotive and general industries. .
Second, the history of development
● In the early 1940s, GE scientist Rocha invented the technology of “direct synthesis” of methylchlorosilane, which laid the most important foundation for the development of silicone.
● In the 1940s and 1950s, organic silicon entered the development stage, and large foreign chemical companies such as Dow Corning and Shin-Etsu established a base polymer manufacturing plant and application development.
● In the 1950s, the development of organic silicon research in China originated from the demand for national defense. The combination of Beihua and Shenhua established the Sichuan Chenguang Chemical Research Institute to conduct research on the application of national defense silicone products.
● In modern times, the types and applications of silicone products have been rapidly developed. Applications include bonding, sealing, heat conduction, waterproofing, insulation, electrical conductivity, physiological medicine, and civilian products.
● Development trend, with the increasing demand for energy conservation and environmental protection, traditional organic materials such as neoprene, solvent glue, epoxy glue, PU glue, etc. will be more and more restricted, silicone Rubber, environmental protection, weather resistance, acid and alkali resistance, high and low temperature resistance, waterproof, low ion, physiological inertness and other unique characteristics will be more widely used.

2,condensation curing type：
The moisture in contact with air at room temperature solidifies into a silicone rubber with a one-component (1–P) and two-component (2-P) component. Depending on the structure of the cured by-products, the one-component RTV can be classified into the types of Oxime, Alkoxy, Acetone, and Acetoxy.
2 addition curing type
A silicone rubber that cures to heat under heat or room temperature and has a one-component (1–P) and two-component (2-P) component.

3. Advantages and characteristics
Due to its unique molecular structure, RTV silicone rubber determines its excellent thermal stability, elasticity, moisture resistance, dielectric stability, adhesion to substrates, and low ion properties in harsh working environments. Impurities and compatibility with processing technology provide a reliable guarantee for the long-term life of electronic and electrical products.

4, Market Overview:
In the automotive market, RTV silicone rubber has a capacity of 170 million US dollars and grows at a rate of 5% per year.
• Electronic Control System – $130 million
– potting material, 40 million US dollars
– Overcoat, $20 million
– heat dissipation, 40 million US dollars
– Assembly, $30 million
• Lighting System – $20 million
–1750t silicone sealant
–LED light source
–PC hard coating
• Security System – $45 million
–5000t nylon cloth silicone rubber coating
–Electronic sensor