On the basis of maintaining the excellent properties of silicone materials such as heat resistance, cold resistance, high voltage resistance and climate aging resistance, FVMQ fluorosilicone O-ring also has excellent hydrogen solvent resistance, oil resistance, acid and alkali resistance and lower surface energy performance of organic fluorine materials due to the introduction of fluorogroups.
 Also known as γ-trifluoropropyl methyl polysiloxane. In the general molecular chain, 0.2%~0.4% vinyl siloxane copolymerization modification is also introduced. Colorless transparent high viscosity plastic straight chain polymer compound, the main chain is composed of silicon and oxygen atoms, and the side groups connected with silicon are methyl, vinyl and trifluoropropyl, the molecular weight is between 500,000 and 800,000. With various additives, it can be mixed into a homogeneous compound. Under the action of organic peroxide, it can be vulcanized into various elastic rubber products. In addition to the characteristics of general silicone rubber, there are excellent resistance to aviation fuel oil, hydraulic oil, oil, chemical reagents and solvents. It can work for a long time at -55~+200℃.
 use：
From the main chain structure point of view, fluorine rubber can be divided into three basic types: fluorocarbon rubber, fluorine silicone rubber, fluorophosphoronitrile rubber. Among them, fluorocarbon rubber is the main, and among them, vinylidene fluoride is copolymerized with trifluorovinyl chloride (1# adhesive), vinylidene fluoride is copolymerized with hexafluoropropylene (2# adhesive), vinylidene fluoride is copolymerized with hexafluoropropylene and tetrafluoroethylene (3# adhesive).
(1)1# fluororubber has good physical and mechanical properties and chemical stability, and can be used for a long time under 200℃ and for a short time under 250℃; The brittleness point is -20℃~ -40℃; Excellent medium resistance, excellent stability to organic solvents, inorganic acids, oxidants, especially excellent acid resistance; It has excellent weather resistance and ozone resistance, and after several years of exposure in the atmosphere, the physical and mechanical properties have little change, and the effect on microorganisms is also more stable. 1# fluororubber is currently only produced by Chenguang Yuan in China. It is mainly used for the preparation of heat-resistant, oil-resistant and acid-resistant rubber products. Such as seals, rubber hose, rubber pad, tape, film, fuel tank and impregnated products can also be used as the outer sheath of wire and equipment anti-corrosion lining, etc., widely used in aviation industry, petroleum industry, automotive industry, chemical industry and other fields.
(2)2# Fluororubber 2# fluororubber is the most used fluororubber variety. Good storage stability, electrical insulation and radiation resistance; Excellent oil and medium resistance; Excellent vacuum performance, can meet the needs of special occasions; Good heat resistance, usually can be used at 250 ° C for a long time, 300 ° C for a short time.
Type 26 fluororubber is mainly used for the preparation of heat-resistant, oil-resistant and acid-resistant rubber products. Such as seals, hoses, rubber pads and so on. The product can be used for a long time at 250 ° C and for a short time at 300 ° C. Its oil resistance is better than other varieties of fluorine rubber, and it can be used for parts that need oil resistance. Examples are as follows: Used as "○" ring, V-type sealing ring, oil seal bowl with metal skeleton, valve gasket, etc. These sealing materials can work for a long time at 200~250 ° C and for a short time at 300 ° C.
In the petroleum industry :F26 rubber seals are used in drilling machinery refining equipment, natural gas desulfurization equipment, can withstand high temperature, high pressure, oil and strong corrosive media and other harsh conditions.
In the chemical industry :F26 seals are used in pumps, pipe fittings and equipment containers to seal chemical substances such as inorganic acids and organics.
In terms of building materials manufacturing :F26 can be used as cement single bin pump sealing rubber ring, which is about 10 times longer than the sealing ring made of natural rubber.
(3)3# fluorine rubber has outstanding high temperature resistance, oil resistance, especially resistance to double ester oil, chemical resistance and good physical and mechanical properties, satisfactory dielectric properties, non-flammability, weather resistance and excellent vacuum properties, radiation resistance; It can usually be used for a long time at 275℃ and for a short time at 320℃. Oil resistance, acid resistance is better than 1# glue; Weather resistance, ozone resistance, radiation resistance, gas permeability and electrical properties and fire resistance are similar to 2# adhesive. It is widely used in aerospace, automobile, machinery, petrochemical and other fields. For example, it is used as a dynamic and static sealing material for hydraulic systems and lubrication systems of aircraft; Used as sealing materials for oil fields, oil cables and pipelines for oil fields and drilling equipment; The chemical industry is used as the lining of equipment, pipeline flexible connections, pumps, etc., or as a corrosion-resistant sealing material, and is made of pipes to transport or organic solvents or other corrosive media.