PTFE zowotchera nsalu zotentha kwambiri za PTFE zimapereka maubwino anayi ofunikira: kusagwira ntchito (palibe mafuta kapena ufa wofunikira, makeke osakhwima amamasulidwa bwino), kutentha kwakukulu (-70 ° C mpaka 260 ° C, otetezeka ku uvuni mpaka mufiriji), kugwiritsiridwanso ntchito (zikwizikwi, zosavuta kuyeretsa), komanso ngakhale kuwongolera kutentha (kuletsa kuyaka, bulauni moyenera). Mogwirizana ndi chakudya cha FDA, amatulutsa zikopa ndi kupitilira mateti a silikoni okhala ndi kutentha kwabwinoko komanso mawonekedwe owoneka bwino.

PTFE mkulu-kutentha nsalu n'kofunika mu zovala interlining makampani. Ntchito zazikulu: malamba osatha osatha amakina ophatikizana mosalekeza (amateteza zomatira zotentha zosungunuka, zomata zopanda makwinya), chivundikiro chosagwira ndodo ndi nsalu zomangira zosindikizira kutentha (amateteza ma platens kuti asaipitsidwe ndi zomatira), malamba otumizira madontho a madontho / zomatira zomatira kuyanika / sintering), ndi zovundikira nsapato zachitsulo zokanikizira zitsanzo. Kukhuthala kumachokera ku 0.13mm (padding yopepuka) mpaka 0.55mm (malamba onyamula katundu wolemera).

Anti-static PTFE nsalu zimatheka kudzera njira ziwiri zazikulu: ❖ kuyanika doping (kusakaniza conductive fillers ngati mpweya wakuda mu PTFE emulsion, kupanga percolation network pa ndende yovuta) ndi gawo lapansi kuluka (embedding ulusi conductive mu fiberglass nsalu). Kulimbana kwapamwamba kumayendetsedwa pa 10⁵–10⁹ Ω. Mfundo: pangani njira yoyendetsera yomwe imatulutsa ma static charges nthawi yomweyo, kupewa kudzikundikira kowopsa. Kuyika pansi ndikofunikira kuti ntchito igwire bwino.

Nsalu yotentha kwambiri ya PTFE (PTFE-yokutidwa ndi fiberglass) imapereka kukana kwamankhwala kwapadera, kupirira ma acid (kuphatikiza aqua regia), alkali amphamvu (kutentha kwachipinda), zosungunulira organic, ndi ma oxidizing agents. Kupatulapo: zitsulo zosungunuka za alkali ndi ma halogen otenthetsera kwambiri amaukira PTFE. Kuwonongeka kwa zokutira kumawonetsa magalasi a fiberglass ku hydrofluoric acid ndi ma alkali otentha kwambiri. Kutentha pamwamba pa 260 ° C kumachepetsa kukana. Pazinthu zambiri zama mankhwala, nsalu ya PTFE imakhalabe yokhazikika komanso yodalirika.

Kuyanika ndi gawo lofunika kwambiri pakupanga nsalu za PTFE zotentha kwambiri. Zowonongeka zodziwika bwino ndi izi: kung'amba (kuyanika mwachangu, kupukuta khungu), kusuntha (tinthu tating'onoting'ono tating'onoting'ono), mapini / matuza (mpweya wotsekeka kapena nthunzi), mawanga oyera ndi choko (kusuntha kwa surfactant kapena kusakanizika kosakwanira), chikasu / kuphika (kutenthedwa kwa zowonjezera), delamination (kutsika kwapang'onopang'ono) shrinkage), pamwamba youma koma mkati monyowa (kukopa misampha chinyezi), ndi m'mbali zokhuthala (khofi-ring effect). Zothetserazo zimaphatikizapo mbiri yowumitsa bwino, mpweya wabwino, ndi kusamalidwa bwino kwa gawo lapansi.

Nsalu yagalasi yowonjezeredwa ya fiberglass (nsalu ya ulusi wochuluka) imasiyana kwambiri ndi nsalu wamba ya fiberglass pamapangidwe a ulusi. Kupyolera mu chithandizo cha jeti ya mpweya wothamanga kwambiri, zitsulo zamagalasi zopitirira zimalekanitsidwa, zopindika, ndi kufinyidwa kukhala ulusi wowala ngati thonje. Izi zimapanga nsalu zokulirapo, zofewa zokhala ndi kutenthetsa kwapamwamba kwambiri (zosanjikiza mpweya), kufananiza bwino, kusefera kwapamwamba, komanso kukana kung'ambika / kusinthasintha - pamtengo wa mphamvu yotsika pang'ono. Amagwiritsidwa ntchito popanga ma gaskets otentha kwambiri, zokutira mapaipi, zikwama zosefera, ndi zisindikizo za uvuni.

Kuyera kwazinthu zopangira ndi maziko a PTFE ntchito ya nsalu yotentha kwambiri. Emulsion yoyera kwambiri ya PTFE (palibe ma ion zitsulo, palibe zotsalira zochepetsera ma molekyulu) zimatsimikizira kukana kutentha (palibe chikasu mpaka 260 ° C), osasunthika osasunthika, komanso mphamvu yayikulu ya dielectric. Kwa magalasi a fiberglass, E-glass yopanda alkali (Na₂O <0.8%) imasunga mphamvu ndi kutsekemera pa kutentha kwakukulu; magalasi apakati/apamwamba-alkali amachititsa kuwonongeka. Kuchotsa kwathunthu kwa zoluka zoluka kumalepheretsa carbonization ndi delamination. Kuyera kumakhudza mwachindunji moyo wautumiki, kutsata chakudya, komanso kudalirika kwamagetsi.

Nsalu ya PTFE yotentha kwambiri (PTFE-yokutidwa ndi fiberglass) imakhala yocheperako, koma zinthu zina zimayambitsa dzimbiri nthawi zina. Kuukira kwachindunji kwa PTFE kumachitika ndi zitsulo zosungunuka za alkali (sodium, potaziyamu), ma fluorinating agents amphamvu (F₂, ClF₃) pa kutentha kwambiri, ndi alkalis amphamvu osungunuka pamwamba pa 300 ° C. Kudzimbiri kosalunjika kumachitika pamene hydrofluoric acid (HF), alkali yotentha kwambiri, kapena asidi wotentha wa phosphoric alowa ndi zopindika ndikuukira gawo lapansi la fiberglass. Pakuti kwambiri mankhwala utumiki, ntchito koyera PTFE filimu popanda fiberglass.

Nsalu yotentha kwambiri ya PTFE (PTFE-yokutidwa ndi fiberglass) imakhala ndi kukana kwamphamvu kwa kutentha kwapakati pa -70°C mpaka 260°C. Imatha kulekerera kutentha kwapang'onopang'ono, mwachitsanzo, kuchoka pa -50 ° C mufiriji kupita ku makina osindikizira otentha a 260 ° C. Maphunziro apamwamba amapulumuka ngakhale kuzizira kwadzidzidzi kuchokera ku 260 ° C mpaka 10 ° C madzi. Komabe, kugwedeza zinthu kuchokera kutentha pamwamba pa 300 ° C (pafupi ndi PTFE's 327 ° C melting point) kungayambitse kusweka ndi delamination mwamsanga. Gawo la fiberglass limapereka bata laling'ono; Chophimba cha PTFE ndiye cholepheretsa.

PTFE mkulu-kutentha nsalu chimagwiritsidwa ntchito makampani mankhwala kwa ntchito zisanu ndi ziwiri zofunika: flange gaskets ndi linings chitoliro (amakana zidulo amphamvu / alkalis), riyakitala ndi linings thanki (kupewa dzimbiri zitsulo, kuyeretsa mosavuta), matumba fyuluta kwa dzimbiri chitoliro mpweya (mpaka 260 ° C), odana dzimbiri kukulitsa, zomangira zomangira, zomangira zomangira, zomangira zomangira, zomangira zomangira, zomangira zomangira zolumikizira. composite akamaumba, ndi magetsi / matenthedwe kutchinjiriza wraps. FDA ndi UL magiredi alipo.