Polytetrafluoroethylene yog tsim los ntawm dawb radical polymerization ntawm tetrafluoroethylene. Muaj polymerization yog nqa tawm nrog nplawm nyob rau hauv lub xub ntiag ntawm ib tug loj npaum li cas ntawm cov dej kom disperse lub tshav kub ntawm cov tshuaj tiv thaiv thiab pab tswj qhov kub thiab txias. Lub polymerization feem ntau ua tiav ntawm 40-80 degree thiab siab ntawm 3-26 kgf/cm2. Inorganic persulfates thiab organic peroxides tuaj yeem siv los ua cov neeg pib, thiab cov tshuab redox pib kuj siv tau. Muaj ib qho exotherm ntawm 171.38kJ ib mole ntawm tetrafluoroethylene thaum lub sij hawm polymerization. Rau dispersion polymerization, perfluorinated surfactants, xws li perfluorooctanoic acid los yog nws cov ntsev, yuav tsum tau ntxiv. PTFE tuaj yeem ua tiav los ntawm compression lossis extrusion; Nws kuj tuaj yeem ua rau hauv cov dej dispersion rau txheej, impregnation lossis fiber ntau tsim. PTFE yog dav siv nyob rau hauv atomic zog, aerospace, electronics, hluav taws xob, tshuaj, mechanical, instrument, instrument, siv, textile, zaub mov thiab lwm yam lag luam raws li kub thiab tsis kub resistant, corrosion resistant cov ntaub ntawv, insulating cov ntaub ntawv, anti-stick coatings, thiab lwm yam. .
Polytetrafluoroethylene yog dav siv nyob rau hauv ntau yam kev xav tau los tiv thaiv acid thiab alkali thiab organic solvents. Nws tsis yog tshuaj lom rau tib neeg, tab sis perfluorooctanoic acid (PFOA), ib qho ntawm cov khoom siv raw siv hauv cov txheej txheem tsim khoom, suav hais tias muaj cov teebmeem carcinogenic. Expanded polytetrafluoroethylene PTFE Plumbers Daim kab xev siv 100 feem pua polytetrafluoroethylene li raw khoom, thiab nws muaj ib tug reticulated nthuav qauv tsim ntawm zoo fibers ntev thiab nodes. Expanded polytetrafluoroethylene PTFE Plumbers Daim kab xev muaj cov yam ntxwv ntawm zoo toughness, siab longitudinal zog thiab yooj yim rau sab deformation. Nws yog qhov zoo tagnrho rau kev sib khi ntawm cov discs thiab threads. Txawm li cas los xij, nws tsis tuaj yeem siv rau hauv kev sib cuag nrog cov pa oxygen siab lossis kua oxygen.
