PTFE zaj duab xis tuaj yeem ncav cuag DIN4012 tus qauv tiv thaiv hluav taws B1 qib, qhov kub ntawm qhov kub tuaj yeem ncav cuag 200 ℃, thiab nws tsis yooj yim rau ntes hluav taws.Lub teeb yuag, zoo ductility, siab compressive zog, tsis yooj yim rau tsim kua muag.Lub neej ua haujlwm ntev, tsawg dua 30 xyoo, cov khoom siv txaus siab rau ob txheej txheej tshem tawm ru tsev.Vim tias PTFE zaj duab xis kaw cov qauv molecular saw los ntawm fluorine atoms, nws muaj peev xwm nqus tau lwm yam tshuaj lom neeg tsis muaj zog.Nyob rau hauv lub ntiaj teb macro, nto ntawm PTFE zaj duab xis yog hais txog 185N / M, raw khoom yog tsawg, thiab nws tsis nplaum.
Yog li ntawd, PTFE zaj duab xis mas pom zoo rau tus kheej tu cov khoom thiab dej tsis kam.Teflon zaj duab xis yog cov khoom siv raw ntawm Teflon-coated iav fiber ntau.PTFE yog qhov zoo tshaj plaws nyob rau hauv lub xeev ruaj khov.Cov txheej yuav tsum tau melted thiab ces siv rau fiberglass.Lub melting kub yog siab tshaj 400 ℃, thiab txheej zaus xav tau txog 10 zaug.Hauv qhov txuas no, cov iav fiber ntau yuav tig daj vim qhov kub thiab txias, thiab ntau zaus txheej txheej, cov xim hnyav dua.Yog li ntawd, PTFE polytetrafluoroethylene zaj duab xis cov ntaub ntawv tau cia li ua xim av.Txawm li cas los xij, PTFE polytetrafluoroethylene zaj duab xis cov khoom tuaj yeem zom thiab nqus cov kab hluav taws xob ultraviolet los ntawm tshav ntuj.
Teflon zaj duab xis tsis tuaj yeem ua kua nplaum.Los ntawm kev tshuaj xyuas ntawm nws lub cev muaj zog, muaj cov laj thawj tseem ceeb hauv qab no: qhov chaw qis, qhov loj me me, tshuaj lom neeg ruaj khov zoo, cov qauv zoo sib xws ntawm polytetrafluoroethylene zaj duab xis, thiab qis SP tus nqi ntawm cov khoom solubility ntawm polytetrafluoroethylene zaj duab xis.Qhov saum npoo yog qhov tsawg, thiab qhov kev txhawb nqa nto ntawm qhov tseem ceeb yog feem ntau tsis loj.PTFE muaj qhov nro pem hauv ntej ntawm 118 degrees, lub nraub qaum sab nraub qaum ntawm 91 degrees, thiab kev sib tshuam ntawm 104 degrees.Tag nrho cov khoom siv raw yog qhov loj thiab qhov kev sib tshuam ntawm lub ntsej muag yog siab.Lub lubrication ntau yog me me, piv txwv li cov adhesion tsis zoo thiab cov nplaum tsis txaus.Teflon yas zaj duab xis ntub dej, yog li tsis muaj qhov zoo adhesion rau Teflon grain loj, zoo analytical tshuaj stability, teflon o thiab dissolving tag nrho tshaj li crystalline polymers tsis tuaj yeem coated ntawm Teflon yas zaj duab xis tawv polymer macromolecular chains ntawm qhov chaw.
Post lub sij hawm: Aug-01-2022