The types of fluorine rubber

by:TaiHai     2020-07-22



























today to introduce the members of the family of fluorine rubber,

1, fluorine rubber

( FKM) Fluorine rubber is made by fluoride monomer polymerization or polycondensation and get the molecular main chain or side chain of carbon atoms with fluorine atoms on the elasticity of the polymer. As used in the manufacture of fluorinated monomers, fluorine rubber has many varieties, types can be divided into and nitroso copolymer containing fluorine olefin copolymer. In particular, can be divided by chemical composition containing fluorine olefin by fluorine rubber, fluorinated silicone rubber


glue, nitroso fluorine rubber, acrylate rubber fluoride, fluoride phosphate nitrile rubber, fluorinated ether rubber, etc. Fluorine rubber has a high temperature resistant, oil resistant and the characteristics of a variety of chemical erosion resistance, is a modern aircraft, missile, rocket and space navigation and so on advanced science technology indispensable materials. In recent years, as the automotive industry and continuous increase of requirements for reliability, security and so on, fluorine rubber in the automobile consumption is also growing fast.

temperature range: - 45 ℃ ~ 204 ℃ advantages:

, excellent chemical stability, resistance to most of the oil and solvent, especially all kinds of acids, aliphatic hydrocarbon and aromatic hydrocarbon and animal and plant oil, excellent resistance to high temperature
, good ageing resistance,
good vacuum performance,
,
excellent mechanical properties, good electric properties,
good permeability, disadvantages:
not recommended for ketones and esters of low molecular weight and nitro compounds containing
,
low temperature performance is bad, poor resistance to radiation performance applicable medium:

, mineral oil, ASTM oil IRM902 oil and 903
1, nonflammable HFD hydraulic oil
, silicone oil and silicone resin,
mineral and vegetable oil, grease, fat hydrocarbon,
( Butane, propane, natural gas)
, aromatic hydrocarbons, Toluene, xylene)
, chlorinated hydrocarbons, Trichloroethane, carbon tetrachloride)
gasoline, Including high alcohol gasoline) High vacuum,

is not applicable to medium:
glycol base, brake oil,
ammonia, amines, alkali superheated steam,

, low molecular weight organic acids ( Formic acid and acetic acid)


2, fluorine rubber ( FFKM) :
all hydrogen atoms are replaced by fluorine monomer, the fluorine rubber unique performance. , excellent corrosion resistance, can almost all chemicals, including acid, alkali, ketone, aldehyde, amine, ester, ether, alcohol, strong oxidizer, etc. , excellent heat resistance, long-term heat resistance up to 316 ℃.


3, fluorine silicone rubber (e FSI)
fluorine silicone rubber, also called gamma Three fluorine propyl methyl polysiloxane, general molecular chain is introduced in the 0. 2% ~ 0. 4% vinyl siloxane copolymerization modification, colorless transparent high viscous plasticity straight-chain polymer compound, main chain is composed of silicon and oxygen atoms, connected to the silicon side base for methyl, propyl vinyl and three fluorine, the molecular weight between 50 ~ 800000. Cooperate with various additives, can be mixed into homogeneous rubber, under the effect of organic peroxide, sulfide into various elastic rubber products, besides has the general characteristics of the silicone rubber, and excellent resistance to aviation fuel oil, hydraulic oil, engine oil, chemical reagent and solvent etc. Suitable for airplane fuel tank sealing materials, engine parts, fuel oil hose, seal oil pressure system


4, four fluorine rubber (c FEPM)
4 c fluorine rubber is four fluorine ethylene and propylene copolymer generated by emulsion polymerization, excellent resistance to heat aging resistance, acid-proof alkaline, weather aging resistance performance, excellent resistance to high temperature steam performance, unique compression permanent deformation resistance. 4 c fluorine rubber oil resistance than 26 type fluorine rubber, the lubricating oil, hydraulic oil, engine oil and brake fluid has good resistance to patience. 4 c is the chief drawback of fluorine rubber cold resistant performance is poor. Temperature range: 0 ℃ ~ 230 ℃


5, Silicone Rubber Silicone Rubber ( Q) Hot vulcanization and room temperature vulcanized silicone rubber. Thermal sulfide type and methyl silicone rubber ( MQ) , methyl vinyl silicone rubber ( Most VMQ, dosage and the product brand) , methyl phenyl vinyl silicone rubber PVMQ ( Low temperature resistant, resistant to radiation) , and other eye of silicone rubber, fluorine silicone rubber, etc. MQ is colorless transparent high viscous plasticity straight-chain polymer compound, main chain is composed of silicon and oxygen atoms, connected to the silicon side base for methyl, molecular weight between 500000-800000. VMQ colorless transparent high viscous plasticity straight-chain polymer compound, main chain is composed of silicon and oxygen atoms, connected to the silicon side base for methyl and vinyl, the molecular weight between 500000-800000. PVMQ is in the molecular chain of vinyl silicone rubber, the introduction of diphenyl silica link or methyl phenyl silicone oxygen link. Temperature range: - 60℃( Special to - 115℃) ~204℃( Special to 260 ℃)


6, neoprene ( CR) Neoprene composed of chloroprene monomer polymerization, is the polarity between saturated and unsaturated rubber, vulcanized rubber after has relatively good ozone resistance ( Than is better than that of NR, SBR, NBR, EPDM, IIR) Resistance, weather resistance, chemical corrosion resistance and anti-aging performance, but also has good mechanical properties, flame retardant and good wear resistance, low temperature flexibility, good resistance to distortion performance, resistance to dichlorodifluoromethane and ammonia refrigerants, such as dilute acid resistant, resistant silicon ester lubricant, but not resistant to phosphate series hydraulic oil, at low temperature crystallization, hardening, storage stability, low in aniline point of large amount of mineral oil in the expansion.


the summary is here today, want to know more information on silicone rubber are welcome to inquire the




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