Tetrafluoroethylene phaj yog lub npe hu ua huab tais ntawm plastics hauv kev lag luam plastics, thiab nws qhov kev ua tau zoo yog qhov tsis pom zoo los ntawm cov yas zoo tib yam, yog li nws feem ntau siv rau hauv qhov chaw uas muaj qhov hnyav hnyav, xws li acid thiab alkali, corrosive media thiab kub kub.Yog li, dab tsi yog qhov zoo ntawm PTFE board?
Ua ntej, nws muaj qhov kub thiab txias tsis kam.Raws li qhov tam sim no kev siv cov ntaub ntawv tetrafluoroethylene muaj kev txhawj xeeb, cov khoom siv raw tuaj yeem ncav cuag 232 ° C, thiab txawm tias qhov kub siab tom qab rov qab mus rau lub tawb tuaj yeem ncav cuag li 150 ° C, thiab kev siv kub yog dav heev.
Daim ntawv PTFE muaj cov khoom zoo dielectric, zoo heev dielectric zog thiab arc tsis kam, tsis tshua muaj dielectric poob tangent, thiab tsis zoo corona kuj.Cov ntawv tetrafluoroethylene muaj qhov nqus dej zoo, tsis muaj oxygen, UV thiab huab cua tsis kam.Lub zog tensile sab nraum zoov tseem tseem tsis tau hloov pauv rau peb xyoos sib law liag, tsuas yog qhov elongation txo.Teflon films thiab coatings yog permeable rau dej thiab roj vim lawv cov porosity zoo.PTFE tuaj yeem tsim nyog rau ambient kub ntawm rho tawm 190 degrees thiab 250 degrees.Nws tuaj yeem kub lossis txias tam sim ntawd, lossis hloov kub thiab txias yam tsis muaj kev cuam tshuam.Ntxiv nrog rau kev daws teeb meem tshuaj lom neeg thiab roj av, tetrafluoroethylene nplooj ntawv tseem tuaj yeem ua lub luag haujlwm hauv kev lag luam tshuaj thiab lwm yam haujlwm.Muaj ntau cov khoom sib khi ntawm lub khw niaj hnub no, nrog rau cov khoom siv gasket lossis gasket.Tsis tas li ntawd, PTFE kuj tau siv dav hauv cov ntaub ntawv uas yuav tsum muaj kev sib khi, thiab feem ntau yog siv los ua Jinxining muab tub lim.Lub luag haujlwm ntawm daim ntawv PTFE yog qhov zoo heev, vim tias daim ntawv PTFE muaj lub luag haujlwm zoo, ntau yam khoom siv, thiab ua lub luag haujlwm loj hauv ntau qhov chaw thiab spheres ntawm kev cuam tshuam.PTFE tuaj yeem pom txhua qhov chaw hauv peb lub neej.
Qhov thib ob, tsis muaj teeb meem dab tsi ntawm cov tshuaj nws yog, txawm li cas los xij, PTFE tuaj yeem siv tau.Nws tuaj yeem hais tias yog tias daim ntawv PTFE tsis tuaj yeem ua tau raws li qhov yuav tsum tau muaj kev tiv thaiv corrosion, tsis muaj lwm yam ntaub ntawv yas siv tau.Ntxiv nrog rau nws cov tshuaj tiv thaiv zoo heev, nws cov khoom siv kho tshuab kuj yog qhov zoo heev, uas ua rau nws tsim nyog siv rau lub sijhawm nrog cov viav vias loj thiab khoov.
PTFE daim ntawv yog dav siv nyob rau hauv engineering yas xws li kub 260 ℃, tsis tshua muaj kub -196 ℃, kua qaub thiab alkali corrosion kuj, huab cua tsis kam thiab non-toxicity.PTFE tuaj yeem pom hauv cov roj av, tshuaj lom neeg, kev kho mob, hluav taws xob thiab txawm tias kev lag luam zaub mov.Txawm hais tias PTFE phaj yog tshuaj lom thiab muaj kev hnav zoo, nws yog cov khoom sib khi zoo.PTFE (Polytetrafluoroethylene, abbreviated li PTFE), feem ntau hu ua "non-stick txheej" lossis "cov khoom siv yooj yim-rau-huv".Cov khoom no muaj cov yam ntxwv ntawm cov kua qaub thiab alkali tsis kam thiab tsis kam mus rau ntau yam organic solvents, thiab yuav luag insoluble nyob rau hauv tag nrho cov kuab tshuaj.Nyob rau tib lub sijhawm, PTFE phaj muaj cov yam ntxwv ntawm qhov kub thiab txias thiab tsis tshua muaj kev sib txhuam coefficient.Ntxiv nrog rau lubrication, kev tsim cov txheej txheem ntawm PTFE phaj txheej kuj tau dhau los ua cov txheej txheem zoo tshaj plaws rau kev ntxuav yooj yim ntawm txheej txheej hauv cov kav dej.
Post lub sij hawm: Lub Xya hli ntuj-18-2022