Zisindikizo Zonse ndi chida chodziwika bwino chosinthira ma gaskets apamwamba kwambiri a PTFE, zosindikizira, ma washers ndi ma insulators.
Zisindikizo Zonse zili ndi chidziwitso pakupereka ma gaskets olondola a PTFE, zosindikizira, zochapira, ndi zotsekera m'mafakitale osiyanasiyana ndikugwiritsa ntchito.Polytetrafluoroethylene (PTFE) ndi chizindikiro cha DuPont cha polima.Ndiwopanga fluoropolymer wa tetrafluoroethylene wopangidwa kwathunthu ndi mpweya ndi fluorine.Ndi innately hydrophobic (kubweza madzi ndi madzi okhala ndi zinthu) ndipo imakhala ndi imodzi mwamagawo otsika kwambiri amakangana ndi zolimba zilizonse.
PTFE ili ndi zinthu zabwino kwambiri za dielectric ndipo imapereka kutentha kwabwino kwambiri kwa kutentha kwa -400 ° F mpaka 500 ° F.PTFE ndiye pulasitiki wosamva mankhwala ambiri odziwika ndipo samakhudzidwa ndi zinthu zamadzimadzi zambiri, nthunzi, ndi mpweya.PTFE nthawi zambiri imaperekedwa mu makulidwe kuyambira .002″ mpaka .250″ yokhuthala ndipo imagwirizana ndi zomwe FDA ndi AMS zimafunikira, zomwe zimapangitsa kuti ikhale yovomerezeka kumakampani azachipatala ndi opanga zakudya.
PTFE, polima wosadzaza Gaskets
Virgin grade PTFE gaskets amapangidwa kuchokera ku 100% zinthu zoyera zomwe zimagwiritsidwa ntchito nthawi zambiri.Ndiwofewa kwambiri komanso wowoneka bwino ndipo nthawi zambiri amagwiritsidwa ntchito ngati zisindikizo zosagwirizana ndi mankhwala komanso ma gaskets.Amapangidwa mwachindunji kuchokera kwa wopanga utomoni ndipo sanasinthidwepo kukhala mawonekedwe.Imakhala ndi zida zapamwamba kwambiri komanso zamagetsi zamagetsi ndipo imachulukitsa kukana kukwawa (kuponderezana) pansi pa katundu.Namwali giredi PTFE amatha kudziwika ndi mtundu wake woyera poyerekeza ndi makina kalasi PTFE.
PTFE, WodzazidwapolimaGaskets
Ma gaskets odzaza a PTFE amapangidwa kuchokera ku PTFE omwe amaphatikiza zowonjezera ndi zodzaza kuti apititse patsogolo magwiridwe antchito a gasket.Izi zimakulitsa luso la ma gaskets kuvala ndikuwonjezera kuphatikiza kwake kwapadera kwamankhwala, thupi ndi magetsi.Polima wodzazidwa ndi mtundu wamba wa PTFE gasket kuti ntchito m'mafakitale monga amaonetsa bwino makina mphamvu poyerekeza Virgin PTFE.Magalasi, kaboni ndi fiber particles ndizomwe zimagwiritsidwa ntchito kuti ziwonjezere mphamvu zamakina a gasket kutengera ntchito.
PTFE, YowonjezerapolimaGaskets
Zowonjezereka za PTFE gasket zimapangidwa ndi kukulitsa Virgin PTFE pogwiritsa ntchito njira yomwe imapanga microstructure yofananira komanso yokhala ndi fibrillation yokhala ndi mphamvu zofananira mbali zonse.Izi zikutanthauza kuti polima wokulitsidwa alibe zofooka zamapangidwe kapena "tirigu".Popeza palibe zowonjezera zomwe zimafunikira, polima wokulitsidwa alinso ndi kukana kwapadera kwa Virgin polima.Expanded PTFE ndi yofewa kwambiri komanso yosinthika kuposa ma gaskets okhazikika a PTFE motero imagwirizana mosavuta ndi malo osakhazikika komanso ovuta.Zinthuzo ndizosavuta kufinya ndikuchepetsa kukwawa komanso kuzizira.
Nthawi yotumiza: Jul-10-2017