Qhov sib txawv tseem ceeb ntawm PTFE thiab RPTFE yog PTFE yog polytetrafluoroethylene, whereas RPTFE yog ntxiv polytetrafluoroethylene.
Lo lus PTFE sawv cev rau polytetrafluoroethylene, uas yog cov khoom siv polymer uas muaj cov fluorocarbon units ua cov chav rov ua dua. Lub npe nrov rau cov khoom siv polymer no yog Teflon. RPTFE, ntawm qhov tod tes, yog daim ntawv txhawb zog ntawm Teflon. Reinforced txhais tau tias Teflon ntxiv nrog rau lwm cov ntaub ntawv los ua kom nws muaj zog. Feem ntau, iav thiab carbon yog cov khoom siv ntxiv rau Teflon.
PTFE yog dab tsi?
PTFE yog polytetrafluoroethylene. Lub npe nrov rau cov khoom siv polymer no yog Teflon. Nws muaj fluorocarbon units raws li rov qab units. Nws yog ib qho hluavtaws fluoropolymer. Cov qauv ntawm cov khoom no yog (C2F4)n. Peb tuaj yeem qhia nws raws li hauv qab no:
Daim duab 01: Rov Ua Haujlwm ntawm Teflon
PTFE yog cov khoom hnyav molecular uas tsuas muaj cov pa roj carbon thiab fluorine atoms. Nws muaj nyob rau hauv lub solid-state ntawm chav tsev kub. Dej tsis tuaj yeem ntub cov khoom no vim nws yog hydrophobic. Tsis tas li ntawd, cov khoom no suav hais tias yog non-reactive thiab pab tau raws li ib tug non-stick txheej. Qhov xwm txheej tsis zoo no tshwm sim vim lub zog ntawm C-F daim ntawv cog lus. Vim yog cov cuab yeej no, PTFE muaj txiaj ntsig zoo hauv kev tsim cov ntim khoom thiab cov kav dej. Tsis tas li ntawd, peb tuaj yeem siv cov khoom no los ua cov roj nplua nyeem thiab. Raws li cov roj nplua nyeem, nws tuaj yeem txo kev sib txhuam thiab kev siv lub zog ntawm cov tshuab. Tsis tas li ntawd, cov khoom no tsis zoo soluble nyob rau hauv yuav luag tag nrho cov kuab tshuaj.
Txoj kev ntawm Teflon ntau lawm yog dawb-radical polymerization. Peb tuaj yeem ua Teflon los ntawm polymerizing tetrafluoroethylene. Txawm li cas los xij, cov txheej txheem tsim khoom no yuav tsum muaj cov cuab yeej tshwj xeeb vim tias tetrafluoroethylene nyiam tawg mus rau hauv tetrafluoromethane. Nws yog ib qho kev phom sij txaus ntshai.
Thaum xav txog nws cov khoom siv polymer, PTFE yog cov thermoplastic polymer. Nws tshwm sim raws li cov khoom dawb ntawm chav tsev kub. Qhov ceev ntawm cov khoom no yog hais txog 2200 kg / m3 Thaum qhov kub thiab txias, Teflon qhia tau hais tias muaj zog thiab tawv heev nrog nws tus kheej lubrication zog. Ntawm qhov kub thiab txias, nws muaj qhov hloov tau zoo thiab. Txij li cov khoom siv no tsis zoo heev, cov tshuaj lom neeg uas tuaj yeem ua rau muaj txiaj ntsig zoo rau nws suav nrog cov tshuaj lom neeg muaj zog xws li alkali hlau.
RPTFE yog dab tsi?
RPTFE yog siv zog polytetrafluoroethylene. Cov khoom no muaj qee cov khoom ntxiv uas tsis yog polytetrafluoroethylene molecules. Qhov no yog qhov txawv ntawm Teflon. Feem ntau, cov chaw tsim khoom siv rau kev txhawb nqa muaj xws li iav fiber, carbon, bronze, graphite, thiab lwm yam. Siv iav fiber ntau yog txoj kev siv ntau tshaj plaws, thiab cov ntsiab lus ntawm iav fiber ntau hauv RPTFE tuaj yeem sib txawv ntawm 5 mus rau 40%. Qhov sib ntxiv no txhim kho cov khoom hnav ntawm cov khoom siv. Yog tias peb siv cov pa roj carbon monoxide ua cov khoom ntim, cov ntsiab lus yuav txawv ntawm 10 mus rau 35%. Thaum nce cov ntsiab lus carbon, qhov sib ntxiv ntawm graphite ua tiav.
Qhov txawv ntawm PTFE thiab RPTFE yog dab tsi?
PTFE thiab RPTFE yog cov ntaub ntawv tseem ceeb polymer. Qhov sib txawv tseem ceeb ntawm PTFE thiab RPTFE yog PTFE yog polytetrafluoroethylene, thaum RPTFE yog siv zog polytetrafluoroethylene. Vim qhov kev txhawb zog, RPTFE muaj lub zog siab piv rau PTFE. PTFE muaj tsuas yog polytetrafluoroethylene units, tab sis nyob rau hauv RPTFE muaj ib tug reinforcing khoom uas tsis yog polytetrafluoroethylene units. Cov khoom siv ntxiv no feem ntau yog iav fiber ntau. Txawm li cas los xij, lwm cov khoom siv txhawb zog tuaj yeem siv rau lub hom phiaj no thiab. Qee qhov piv txwv suav nrog carbon, bronze, thiab graphite.
Hauv qab no yog qhov sib txawv ntawm PTFE thiab RPTFE.
Summary – PTFE vs RPTFE
PTFE thiab RPTFE yog cov ntaub ntawv tseem ceeb polymer. Qhov sib txawv tseem ceeb ntawm PTFE thiab RPTFE yog PTFE yog polytetrafluoroethylene, thaum RPTFE yog siv zog polytetrafluoroethylene. Ntxiv mus, lub npe nrov rau PTFE yog Teflon.
