PCTFE kapena CTFE (poyamba imadziwika kuti Kel-F*) ili ndi zinthu zambiri zofananira ndi ma fluoropolymers ena monga PTFE, FEP kapena PFA, koma imakhala yopambana pamakina (sapunduka mosavuta), ndipo imakhala ndi mpweya wochepa kwambiri.
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PCTFE kapena CTFE (poyamba imadziwika kuti Kel-F*) ili ndi zinthu zambiri zofananira ndi ma fluoropolymers ena monga PTFE, FEP kapena PFA, koma imakhala yopambana pamakina (sapunduka mosavuta), ndipo imakhala ndi mpweya wochepa kwambiri.Kukhazikika kwake kwapang'onopang'ono kumapangitsa kuti ikhale yowoneka bwino kuti igwiritsidwe ntchito ngati gawo lazomangamanga pomwe kutentha kwambiri komanso kukana kwamankhwala kwa fluoropolymers kumafunika.PCTFE ikuwonetsa mphamvu zopondereza kwambiri komanso kusinthika kochepa ponyamula katundu.Komabe, mtengo wake wachibale ndi chimodzi mwazinthu zazikulu pakusankhidwa kwake, chifukwa ndi okwera mtengo kwambiri.
Makampani a Zitsulo ndi Chemical Processing Viwanda akhala akugwiritsa ntchito zinthu zamachubu a fluoropolymer kuchokera ku zinthu monga PTFE ndi mapaipi kwazaka zambiri posamutsa mankhwala owopsa kwambiri kapena owononga.Mochulukirachulukira, machubu a PTFE akulowa m'malo mwa mpweya ndi mapaipi ena achitsulo omwe amawonongeka mwachangu.Tsopano komanso m'tsogolomu, PTFE ipitilizabe kugulitsa malonda muzofunikira.
PTFE Thermal Quality:
Machubu a PTFE amatha kupirira kutentha mpaka 680 °F kwa nthawi yochepa.* Munthawi yovuta, PTFE imakhalabe yolimba mpaka -320 °F.
*Pamwamba pa 500 °F, zinthu zamakina zimakhala zolepheretsa
Makhalidwe Amagetsi a PTFE:
Machubu a PTFE ali ndi mphamvu zapamwamba kwambiri zamagetsi, zomwe zimawonetsedwa ndi kutsika kwa dielectric kosasintha kwa 2.1 pakati -40 °F ndi 480 °F mkati mwamafupipafupi a 5 Hz mpaka 10 GHz.
PTFE chubu ndi insulator yabwino kwambiri yokhala ndi resistivity ya pamwamba ya 3.6 X 1012 ohms (ngakhale pa 100% chinyezi wachibale).
Mphamvu za dielectric za nthawi yochepa zimachokera ku 500 volts / mil (1 mil = 10-3 mkati) chifukwa cha makulidwe oposa 100 mils mpaka 4000 volts / mil kwa mafilimu oonda kwambiri.
Zosiyana ndi PTFE
PCTFE ndi homopolymer wa chlorotrifluoroethylene (CTFE), pamene PTFE ndi homopolymer wa tetrafluoroethylene.Ma monomers akale amasiyana ndi omaliza mwamapangidwe pokhala ndi atomu ya chlorine m'malo mwa maatomu a fluorine.Chifukwa chake gawo lililonse lobwerezabwereza la PCTFE limakhala ndi atomu ya chlorine m'malo mwa atomu ya fluorine.Izi zimapangitsa PCTFE kukhala ndi kusinthasintha kochepa kwa unyolo motero kutentha kwa magalasi apamwamba.PTFE ili ndi malo osungunuka kwambiri ndipo imakhala yonyezimira kwambiri kuposa PCTFE, koma yotsirizirayi ndi yamphamvu komanso yolimba.Ngakhale PCTFE ili ndi kukana kwamphamvu kwamankhwala, ikadali yocheperako kuposa ya PTFE.PCTFE ili ndi mamasukidwe otsika, mphamvu zamakokedwe apamwamba komanso kukana kukwawa kuposa PTFE.
PCTFE ndi jekeseni jekeseni ndi extrudable pamene PTFE si.
Kotero, ndinganene kuti zimatengera kugwiritsa ntchito valve.Kodi muli ndi malire a kutentha/kupanikizika?Ndi ntchito yanji yamadzimadzi/nthunzi?Zikuwoneka ngati zingakhale bwino pamapulogalamu ambiri omwe PTFE imagwiritsidwa ntchito, koma payenera kukhala zenizeni, mapulogalamu omwe amafunikira PTFE osati PCTFE.
PTFE = polymerPCTFE = Kel-F
Zonsezi ndizoyenera kugwiritsa ntchito mipando ya valve ya mpira.Kusiyana kwakukulu ndikuti PCTFE ndiyovuta kwambiri ndipo imakhala ndi mikangano yayikulu.Zotsatira zazinthu zonsezi ndikuti zimafuna torque yochulukirapo kuti valavu itseguke ndikutseka
PS: Lumikizanani nafe PTFE anamaliza mankhwala free chitsanzo
Nthawi yotumiza: Sep-17-2017