Dab tsi ntawm cov ntaub ntawv Teflon muaj?

1. Polytetrafluoroethylene (PTFE)
Ordinary PTFE kav yog dawb thiab opaque, feem ntau suav nrog conduits, hoses, sab hauv ob sab phlu kav, woven reinforced kav, thiab lwm yam. Lawv tuaj yeem thauj cov kua lossis roj mus txog 260 degree nrog cov tshuaj purity siab thiab yog qhov tsim nyog rau ntau yam kev ua haujlwm kub ntxhov. Cov khoom siv hluav taws xob zoo heev ntawm PTFE cov raj kuj ua rau lawv cov khoom tsim nyog tshaj plaws rau cov khoom siv hluav taws xob thiab hluav taws xob engineering, feem ntau yog siv rau hluav taws xob rwb thaiv tsev sheaths, tshuaj lom neeg kev thauj mus los, tshav kub exchangers, kho mob urinary catheters, thiab phais vascular bypass.
2. Tetrafluoroethylene perfluoroalkoxyvinyl ether copolymer (PFA)
Lub cev, hluav taws xob, thiab tshuaj lom neeg ntawm PFA zoo ib yam li cov polytetrafluoroethylene, thiab nws yog ib qho copolymer ntawm ib qho me me ntawm perfluoropropyl perfluoroethylene ether thiab polytetrafluoroethylene. Lub yaj viscosity nce, cov tshuaj viscosity txo qis, thiab tsis muaj kev hloov pauv hauv kev ua haujlwm piv rau polytetrafluoroethylene. Cov resin no tuaj yeem ua tiav ncaj qha rau hauv cov khoom los ntawm cov txheej txheem thermoplastic zoo tib yam. Lub sij hawm ntev siv kub -80-260 degrees Celsius, zoo heev tshuaj corrosion kuj, corrosion kuj rau tag nrho cov tshuaj, tsis tshua muaj kev sib txhuam coefficient nyob rau hauv yas, zoo hluav taws xob kev ua tau zoo, thiab hluav taws xob rwb thaiv tsev tsis cuam tshuam los ntawm kub.
3. Perfluoroethylene propylene copolymer (FEP)
Lub npe tag nrho ntawm FEP yog Fluorinated ethylene propylene, uas yog txhais ua Fluorinated ethylene propylene copolymer. Khoom npe: Teflon * FEP yog ib hom tshuaj lom neeg. FEP yog copolymerized los ntawm tetrafluoroethylene thiab Hexafluoropropylene. Lub melting point ntawm FEP crystallization yog 304 degree, thiab qhov ceev yog 2.15g / CC (grams / cubic centimeter).
FEP tuaj yeem siv rau cov yas mos, nrog lub zog tensile qis, hnav tsis kam, thiab nkag siab ntau dua li ntau cov yas yas. Nws yog chemically inert thiab muaj qhov tsis tshua muaj dielectric tas li tshaj qhov kub thiab qhov ntau zaus.
4. Ethylene tetrafluoroethylene copolymer (ETFE)
ETFE: Lub npe lus Askiv yog: ethylene tetra fluoro ethylene. Ethylene tetrafluoroethylene copolymer yog ib qho tshuaj lom neeg, thiab ETFE yog qhov muaj zog tshaj plaws thiab tawv tshaj plaws fluoroplastic. Thaum tuav cov cua kub zoo, tshuaj tiv thaiv, thiab hluav taws xob rwb thaiv tsev ntawm PTFE, cov hluav taws xob tiv thaiv thiab cov khoom siv kho tshuab tau zoo heev, nrog lub zog tensile txog li 50Mpa, ze li ob npaug ntawm polytetrafluoroethylene.