In the use of products in the silicone rubber industry, there are different material matching for different fields and industries, among which gas-phase collagen materials account for the vast majority. Fluorosilicone rubber products are one of them, mainly used in mechanical construction and some heavy industries. Therefore, their performance and aging resistance are much more outstanding than many rubber and plastic materials. So, what is your understanding and knowledge of it?

Fluorosilicone, also known as trifluoropropyl methyl polysiloxane or special silicone rubber, is mainly made of carbon tetrafluoride and ethylene as raw materials. It can be combined with trimethyl trifluoropropyl cyclotrisiloxane and an appropriate amount of tetramethyltetravinyl ring. Tetrasiloxane is cured and mixed with a small amount of end capping agent under the catalysis of a catalyst. Its material has effectively improved performance compared to silicone rubber materials, The difference in service life of finished products is most significant.

The important features of fluorosilicone rubber products are as follows:

1、 Oil resistance, solvent resistance, chemical resistance
Compared with methyl vinyl silicone rubber, fluorosilicone rubber has excellent oil resistance, solvent resistance, and chemical resistance; Even compared to fluororubber, it has good oil and solvent resistance. After immersion in the same medium, temperature, and time, fluorosilicone rubber exhibits excellent durability. It can be said that fluorosilicone rubber is the only elastomer that can withstand non-polar media at -68 ℃ to 232 ℃. The resistance of fluorosilicone rubber to methanol containing gasoline is also relatively good. Even in gasoline/methanol mixed systems, the hardness, tensile strength, and volume change of its vulcanized rubber are very small. After a 500 hour long immersion test, all physical properties have hardly changed.

2、 Heat resistance
The high-temperature decomposition of fluorosilicone rubber is similar to that of silicone rubber, which includes side chain oxidation, main chain breakage, side chain thermal decomposition, and various composite reactions. Due to the fact that decomposition products can also cause main chain breakage, the heat resistance is usually worse than that of silicone rubber, and oxidation aging has begun at a temperature of 200 ℃. But by adding a small amount of heat stabilizers such as iron, titanium, and rare earth oxides, it can be significantly improved, and even at high temperatures of 250 ℃, it has sufficient heat resistance. The effect of temperature on fluorosilicone rubber is greater than that on silicone rubber, but smaller than that on fluororubber.