Nsalu ya PTFE yotentha kwambiri imakhala yabwino kwambiri yotchinjiriza magetsi kuchokera ku -180°C mpaka 260°C: mphamvu ya mphamvu > 10¹³ Ω·cm pa 200°C, dielectric yokhazikika pa 2.0-2.1. Pamwamba pa 260 ° C, PTFE imafewetsa, imawola pamwamba pa 327 ° C, kutaya kutchinjiriza kosatha. Pansi pa 0 ° C, kutchinjiriza kumayenda bwino koma zokutira zimakhala zolimba. Khalani mkati mwa 260 ° C kuti mugwire ntchito yodalirika.

Zopangira zomalizitsa pamwamba zomwe zimagwiritsidwa ntchito pansalu ya fiberglass pamaso pa PTFE zokutira ndizofunikira kwambiri kuti PTFE igwire ntchito ya nsalu yotentha kwambiri. Organosilane coupling agents amapanga milatho ya mamolekyulu pakati pa organic glass fiber ndi organic PTFE, kukulitsa mphamvu ya peel kuchokera pa <2 N/cm mpaka 4-8+ N/cm. Kuchiza koyenera kumathandizanso kukana kutentha (260 ° C+), magwiridwe antchito a dielectric, komanso kukana mankhwala. Nsalu yosasamalidwa imatsogolera ku delamination, kuphulika, ndi moyo waufupi wautumiki.

Fiberglass weave pattern - plain, twill, kapena satin - imakhudza kwambiri PTFE katundu wa nsalu yotentha kwambiri. Satin weave imapereka mphamvu zong'ambika kwambiri (2-3x plain) komanso kusinthasintha, koyenera kupindika mwamphamvu. Plain weave imapereka kukhazikika kwapamwamba kwambiri komanso kumamatira kwa peel, koyenera kugwiritsa ntchito static. Twill imalinganiza zinthu zonse kuti zigwiritsidwe ntchito.

❖ kuyanika yunifolomu wa PTFE mkulu kutentha nsalu anatsimikiza ndi zinthu zinayi: ❖ kuyanika chiphunzitso (tinthu kukula 0.15-0.35 μm, mamasukidwe akayendedwe, okhutira olimba), ❖ kuyanika & sintering ndondomeko (tsamba ❖ kuyanika ankakonda kufanana), gawo lapansi khalidwe (yokhotakhota chitsanzo, chisanadze mankhwala), ndi kupanga chilengedwe (20-25% R <60]). Dip + blade kuphatikiza njira yolowera ndi kusalala kwa pamwamba.

Kuyeretsa ndi kukonza moyenera kumakulitsa moyo wa nsalu za PTFE zotentha kwambiri. Chotsani mukatha kugwiritsa ntchito komanso mukazizilitsa. Gwiritsani ntchito maburashi ofewa, zotsukira zopanda ndale, kapena mowa popaka madontho. Musagwiritse ntchito zidulo zolimba/ma alkali, bulichi, kapena zopalira zitsulo. Kupaka mafuta okhazikika a silicone kumachepetsa kuvala. Tsatirani malangizowa kuti mupewe kuwonongeka kwa zokutira.

Nsalu zotentha kwambiri za PTFE ndi nsalu za silikoni zonse zimagwiritsa ntchito nsalu za fiberglass ngati maziko koma zimasiyana pakuyatira (PTFE resin vs silicone raba). PTFE imapambana pakusagwira ndodo, kukana kuvala, komanso kukana mankhwala mpaka 260°C. Nsalu ya silicone imapereka kusinthasintha kwapamwamba, kutsekemera kwa magetsi, ndi kukana moto (mpaka 230 ° C). Sankhani malinga ndi zomwe mumakonda.

Nsalu ya PTFE yotentha kwambiri imapereka kukana kwapadera kwamankhwala, kupirira ma asidi amphamvu, alkalis, zosungunulira za organic, ndi mpweya wowononga. Nkhaniyi imafotokoza mwatsatanetsatane za zinthu zomwe zimagonjetsedwa, zolepheretsa (zitsulo za alkali zosungunuka, zopangira mphamvu za fluorinating), ndi zinthu zazikulu monga kutentha, kukhazikika, ndi kupsinjika kwa makina.

Kulowetsedwa kwa PTFE sikungokhala ndi nsalu za fiberglass. Nkhaniyi ikuwonetsa magawo asanu ndi awiri amtundu wina - aramid, carbon fiber, PBI, porous metal, graphite, asbestos (ochotsedwa), ndi zodzaza ndi ceramic - ndi machitidwe awo, ubwino, malire, ndi ntchito zazikulu.

Nkhaniyi ikufotokoza chifukwa chake nsalu ya fiberglass yopanda alkali ndiye gawo lapansi lomwe limakondedwa pa nsalu ya PTFE yotentha kwambiri. Imakhudza kulumikizana ndi mankhwala kudzera pa ma silane coupling agents ndi zinthu zofunika kwambiri monga kukhazikika kwamafuta, kukhazikika kwa mawonekedwe, komanso kukana kwa dzimbiri - kuwonetsetsa kuti zikugwira ntchito kwanthawi yayitali m'malo ovuta.

Monga katswiri wopanga nsalu za PTFE zotentha kwambiri, Jiangsu Aokai New Materials amagawana nanu chidziwitso chofunikira pamakampani. Kuwombera m'mphepete ndi kugwa kwa matepi a PTFE kutentha kwakukulu sikumayambika kawirikawiri ndi chinthu chimodzi, koma chifukwa cha zotsatira zosakanikirana za kusankha kosayenera kwa tepi,