How high temperature resistant is the silicone rubber sealing strip

Silicone rubber is a rubber whose main chain is composed of silicon and oxygen atoms alternately. Silicon atoms are usually connected with two organic groups. Ordinary silicone rubber is mainly composed of siloxane chains containing methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature properties of silicone rubber, while the introduction of trifluoropyl and cyano can improve the temperature resistance and oil resistance of silicone rubber. Silicone rubber sealing strip also follows this property of silicone rubber, has good low temperature resistance and can work normally at - 55 ° C. After the introduction of phenyl, the low temperature resistance can reach - 73 ° C. Silicone rubber also has excellent heat resistance. It can work for a long time at 180 ° C. When it is slightly higher than 200 ° C, it can withstand for several weeks or more. It is still elastic and can withstand high temperatures above 300 ° C in an instant. Silicone rubber has good air permeability, and its oxygen permeability is high in synthetic polymers. In addition, silicone rubber also has the outstanding characteristics of physiological inertia and no condensation, so it is widely used in the medical field.

Among many synthetic rubbers, silicone rubber is better. It is odorless, non-toxic, not afraid of high temperature and cold resistance. At 300 ℃ and minus 90 ℃, it is "comfortable" and "face changing" without losing its original strength and flexibility. Silicone rubber also has good electrical insulation, oxygen aging resistance, light and aging resistance, mildew resistance, chemical stability and so on. Because of these excellent properties, silicone rubber has played an important role in modern medicine. Through the cooperation of hospitals, research institutions and factories, various silicone rubber medical products have been successfully trial produced.

Silicone rubber industry has made remarkable achievements. With the leapfrog development of consumption, the silicone rubber industry has begun to change from high-performance special rubber to mass rubber, and has become one of the largest rubber varieties. The development potential and long-term development of silicone rubber industry have great attraction, and its rapid development will also have a far-reaching impact on upstream and downstream industries. The development of silicone rubber industry is not only the single development of a single industry, but also involves the common development of multiple industries. It is of far-reaching significance to improve the profitability of rubber processing industry and the quality level of rubber products.