Pneumatic valve fluorine-butterfly material performance < / div >

the kinds of pneumatic valve fluorine-butterfly: gather all rot ethylene-propylene 【 聚全氟乙丙烯,F46】 , ptfe 【 PTFE、F4】 Decay, tetrafluoroethylene polymer 【 PFA】 , tetrafluoroethylene ethylene polymer 【 ETFE、F40】 The polyvinylidene fluoride ( PVDF, F2】 , polyethylene ( PE、PO】 Polyphenylene sulfide (PPS) [, PPS】 。


fluorine-butterfly pneumatic valve material performance is introduced: 1, the whole rotten ethylene-propylene English abbreviation FEP, F46, using temperature: - 200 to + 204 ℃, material performance is quite good, except for some special chemical medium, such as: molten alkali metals, fuming nitric acid, chloride, fluoride in addition to the above several chemical medium is not applicable, other chemical basic ability of corrosion medium, chemical plants to choose this material is also very high performance to price ratio.
2, PTFE teflon English abbreviation, F4, using temperature: - 200 to + 200 ℃, this kind of material has very good corrosion resistant and heat resistant performance, in addition to the molten metal, chloride, fluoride trifluoride oxygen under high temperature, high velocity of liquid fluorine, it can resist almost all chemical medium ( Including concentrated nitric acid and aqua regia) , and it also has a small features, the paste, the material should be lining fluoride selection which are frequently used in pneumatic valves.
3, tetrafluoroethylene - English abbreviation PFA perfluorinated generation alkoxy resin, using temperature: - 200 to + 260 ℃, actually this kind of material is: the full name of tetrafluoroethylene - Perfluorinated alkyl vinyl ether copolymer, due to its long-term use of temperature, and the performance is close to PTFE, but also for thermoplastic plastic molding processing, so it has a name: soluble PTFE.
4, tetrafluoroethylene - English abbreviation ETFE, F40 ethylene copolymer, the use of temperature: - 60 to + 180 ℃, the material seems to be very advanced, it has certain stability, in addition to chemical medium shortage very much.
5, polyvinylidene fluoride English abbreviation PVDF, F2, using temperature: - 20 to + 140 ℃, it just for part of medium corrosion resistant performance is good, like halogen, halogenated hydrocarbon, strong oxidant, boiling acid, alkali and other organic solvents. （ Small make up is pneumatic valve technology, small make up have never seen this kind of material in pneumatic valve industry, so please forgive me don't know)
6, polyethylene English abbreviation PE, PO, using temperature: - 40 to + 90 ℃, this kind of corrosion material has excellent corrosion resistance, the non oxidizing acid ( Such as hydrochloric acid, thin sulfuric acid, hydrofluoric acid) Dilute nitric acid, alkali and salt solution has good corrosion resistance.
7, referred to as 'PPS, PPS English use temperature: - 50 to + 120 ℃, it's in excellent chemical corrosion resistance, in addition to the strong oxidizing acids. For the organic solvents under 120 ℃, inorganic acid and organic acid and alkali are inert, and excellent weatherability.
PS: lining fluorine pneumatic valve type small make up to know also is not much more special, can sort out these, hope can help you know lining fluorine pneumatic valves.