4. fluorosilicone rubber

Fluorosilicone rubber refers to γ- trifluoropropyl methyl polysiloxane. Fluorine and silicone rubber has excellent chemical resistance, solvent resistance and oil resistance, the expansion rate of the silicone rubber in nonpolar solvent small, cold resistance and good thermal stability, resistance to ignitability, therefore in the aircraft, rockets, missiles, space flight has been used as a contact with the fuel oil and lubricating oil, oil chemical industry hose, gaskets, seals, fuel tank, etc., in the village Can also be used to manufacture corrosion resistant clothing, gloves, paint, adhesives, etc.

5.nitrile silicone rubber

Because the polymer molecule side chain contains β -nitrile ethyl or γ -nitrile propyl strong polar groups, greatly increase the intermolecular chain force, improve oil resistance, solvent resistance. Meanwhile, due to the introduction of a certain amount of nitrile alkyl, the structure of the polymer is damaged, and the cold resistance is greatly improved. The type of nitrile alkyl and its content, has a great impact on the performance, such as the silicone rubber containing 7.5% mole % γ -nitrile propyl, low temperature performance and low phenyl silicone rubber (its glass temperature of -114.5℃), oil resistance than phenyl silicone rubber. With the increase of γ -nitrile propyl content to 33 ~ 50 mol %, the cold resistance decreased and the oil resistance improved. β -nitrile ethyl instead of γ -nitrile propyl can improve the heat resistance of nitrile silicone rubber, can withstand 250℃ hot air aging.

The main advantage of nitrile silicone rubber is the excellent performance of oil resistance and bath resistance agent. It can be kept elastic in the range of -60 ~ 180℃. Therefore, it can be made into oil-resistant rubber products for the aviation industry, automobile industry and petroleum industry; It can also be used as an environmental sealant for high performance aircraft and an oil tank sealant, and can maintain a seal from -54℃ to over 200℃. Nitrile silicone rubber can be processed by ordinary equipment.

6. phenylene silicone rubber
Phenylene silicone rubber has excellent resistance to radiation is the main characteristics of performance, and its radiation resistance for general 10 ~ 15 times of methyl vinyl silicone rubber, high for 5 ~ 10 times the size of phenyl silicone rubber, therefore, can be used in the aerospace industry, nuclear industry and nuclear reactor as a high-energy radiation resistant cable, the sheath, washers, and heat shrinkable tube, etc.