PTFE Plumbers Daim Kab Xev

Khoom Qhia:

PTFE Plumbers Daim Kab Xev yog cov khoom siv nquag siv hauv kev teeb tsa cov kav dej. Nws tau siv ntawm qhov txuas ntawm cov yeeb nkab txuas ntxiv txhawm rau txhim kho airtightness ntawm cov yeeb nkab txuas.

PTFE Plumbers Daim Kab Xev yog qhov tshiab thiab zoo tagnrho cov khoom ntim. Vim tias nws tsis muaj tshuaj lom, tsis muaj ntxhiab, zoo rau kev sib khi, rwb thaiv tsev, thiab tiv taus xeb, nws tau siv dav hauv kev kho dej, roj nkev, tshuaj lom neeg, yas, hluav taws xob engineering thiab lwm yam haujlwm.

Khoom Loj:

Khoom Nta:

Lub npe tshuaj ntawm cov khoom siv raw yog PTFE. Cov menyuam PTFE dawb feem ntau siv hauv HVAC thiab dej thiab dej ntws. Kuj tseem muaj qhov tshwj xeeb PTFE siv rau cov raj xa roj. Qhov tseeb, cov ntaub ntawv tseem ceeb yog PTFE. Nws' tsuas yog qee qhov txheej txheem sib txawv.

Cov khoom siv raw yog tsim nrog cov khoom siv zoo thiab thev naus laus zis zoo, nrog cov khoom zoo thiab ua tiav cov lus qhia tshwj xeeb, uas tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv khoom sib txawv hauv kev lag luam sib txawv. Cov khoom muaj cov rwb thaiv tsev zoo tshaj plaws, tsis muaj tshuaj lom neeg ruaj khov thiab ua haujlwm tau zoo. Nws yog dav siv hauv tshuab, tshuaj lom neeg kev lag luam, metallurgy, hluav taws xob hluav taws xob, kev tsim khoom hauv nkoj, aerospace, tshuaj, hluav taws xob thiab lwm yam kev lag luam.

Cov txheeb ze molecular loj ntawm polytetrafluoroethylene yog qhov loj, qhov qis yog ntau pua txhiab, qhov siab yog ntau dua 10 lab, feem ntau ntau lab (qib ntawm polymerization yog nyob rau hauv kev txiav txim ntawm 104, thaum uas polyethylene tsuas yog 103). Feem ntau, qhov crystallinity yog 90-95%, thiab qhov kub yaj yog 327-342 ° C. CF2 chav nyob hauv polytetrafluoroethylene molecule tau teeb tsa hauv zigzag zoo. Txij li lub voos kheej-kheej ntawm cov tshuaj fluorine loj dua me ntsis ntawm hydrogen, cov koog CF2 uas nyob ib sab tsis tuaj yeem ua tiav hla kev taw qhia hauv trans, tab sis tsim cov saw hlau sib tw, yuav luag npog los ntawm cov tshuaj fluorine. Qhov saum npoo ntawm tag nrho cov saw polymer. Cov qauv txheej txheem molecular no piav qhia ntau yam khoom ntawm polytetrafluoroethylene. Thaum qhov ntsuas kub qis dua 19 ° C, tsim 13/6 helix; ntawm 19 ° C, ib theem hloov pauv tshwm sim, thiab cov lwg me me tsis txaus ntseeg los ua 15/7 helix.

Txawm hais tias qhov tawg ntawm cov pa roj carbon-carbon sib txuas thiab cov pa roj carbon-fluorine sib txuas hauv perfluorocarbons xav tau lub zog nqus ntawm 346.94 thiab 484.88kJ/mol, ntsig txog, kev xa tawm polytetrafluoroethylene los ua 1 mol ntawm tetrafluoroethylene tsuas xav tau lub zog ntawm 171.38kJ. Yog li ntawd, thaum kub kub tawg, polytetrafluoroethylene feem ntau yog xa mus rau tetrafluoroethylene. Qhov poob phaus tus nqi (%) ntawm PTFE ntawm 260, 370 thiab 420 ℃ yog 1 × 10-4, 4 × 10-3 thiab 9 × 10-2 toj ib teev, feem. Nws tuaj yeem pom tias PTFE tuaj yeem siv tau ntev ntawm 260 ° C. Raws li cov tshuaj lom los ntawm cov khoom lag luam xws li fluorophosgene thiab perfluoroisobutylene tau tsim tawm thaum kub kub, tawg tshwj xeeb yuav tsum tau them nyiaj tshwj xeeb rau kev tiv thaiv kev nyab xeeb thiab tiv thaiv PTFE los ntawm kev qhib cov nplaim taws.