PTFE high-temperature nsalu insulating gaskets kuphatikiza mkulu dielectric mphamvu (khola pansi chinyezi), -70 °C kwa 260 °C kutentha osiyanasiyana, chilengedwe mankhwala kukana (kupatula zitsulo za alkali wosungunuka), non-ndodo pamwamba (amaletsa creepage), anti-creep (fiberglass reinforcement vs. koyera PTFE, μ=01), mkulu tensi (50 .01) . Mtengo wa V-0. Poyerekeza ndi mica, mphira, ndi ma gaskets oyera a PTFE, nsalu ya PTFE imapereka kusinthasintha kwapamwamba, kusinthika, komanso kukhazikika kwanthawi yayitali. Zoyenera ma thiransifoma, kutchinjiriza kwa mota, kusindikiza ma flange amankhwala, ndi zida za semiconductor.

PTFE nsalu flatness pa sintering amafuna ndendende mavuto, kutentha, ndi kudziletsa. Njira zazikuluzikulu: makina a stenter (mbale za pini zimasunga m'lifupi, zimateteza kuchepa kwa weft), mbiri ya kutentha kwa gradient (kutentha kwapang'onopang'ono → 380-400 ° C kugwira → kuziziritsa pang'onopang'ono pansi pa 310 ° C musanatulutse kukangana), gawo lapansi lomwe lisanadulidwe (kuchotsa kupsinjika kwa kuluka musanakutidwe), ndi makulidwe a yunifolomu ❖ kuyanika (kuletsa kusungunuka kwa kusiyana). Kuletsa kwamphamvu kuyenera kusungidwa mpaka kuzizirira pansi pa PTFE crystallization point (pafupifupi 310 ° C) kuti muteteze tsamba lankhondo.

Nsalu yotentha kwambiri ya PTFE imapangidwa kudzera mumiyezo imodzi yokha (chiphaso chimodzi: chofulumira, chotsika mtengo, chophikira chopyapyala, cholimba chokhala ndi mapini) kapena kulowetsedwa kwamitundu yambiri (2-3+ kudutsa: zosalala, zowuma, zokutira zopanda pinhole, PTFE zili 50-70%, magwiridwe antchito apamwamba, okwera mtengo). Dip imodzi imagwirizana ndi ma gaskets otsika, mateti osakhalitsa, ndi zinthu zopumira. Ma dip ambiri amafunikira pamapepala ophikira zakudya, malamba onyamula osamata, magawo ozungulira othamanga kwambiri, ma liner a mankhwala, ndi nembanemba zamamangidwe.

PTFE pamwamba kutentha nsalu pamwamba mankhwala amaswa inertness mankhwala kwa kugwirizana/kusindikiza. Njira zinayi: etching mankhwala (sodium-naphthalene, pamwamba mphamvu 20→ 40-50 dyn/cm, wosanjikiza mdima wokhazikika, micro-porous structure), mankhwala a plasma (nano-roughening, ntchito gulu Ankalumikiza, lalifupi yogwira zenera), corona mankhwala (woonda-filimu, mofulumira kuwola, pang'ono kuya), ndi laser mankhwala (molondola yaying'ono-patterning, controlled carbonization). Njira zonse zimakhala zowawa ndikuyambitsa magulu a polar (C=O, -OH, -COOH) kuti athe kumamatira.

Kuyera kwazinthu zopangira ndiye maziko oyambira amtundu wa PTFE wotentha kwambiri. Zonyansa (zoyambira zotsalira, zopangira zinthu, ma ayoni achitsulo, zinthu zoipitsidwa) zimayambitsa kuwonongeka kwa kutentha msanga (mathovu, matuza opitilira 260 ° C), malo osamata (malo omatira), kuchepetsa kutchinjiriza kwa magetsi (kutayika kwa dielectric, kutsika kwamagetsi), kufowoketsa mphamvu zamakina (ndi kupsinjika kwachikasu), kufooka kwa makina (ndi kupsinjika kwachikasu). Zopangira zoyera kwambiri zimatsimikizira kuti FDA imagwirizana, imakhala ndi moyo wautali, nsalu ya PTFE yogwira ntchito kwambiri.

PTFE- TACHIMATA fiberglass nsalu nsalu sintering amafuna yeniyeni kugwira nthawi pa 370-400 °C. Ng'anjo zopitilira: 30-90s (zoonda) mpaka 3-5+ min (zokhuthala). Ng'anjo zamagulu: 5-15 min. Pansi-sintering kumayambitsa opaque, zokutira zaukali zomwe zimasenda; Kuchuluka kwa sinter kumayambitsa chikasu, brittleness, ndi kutulutsa mpweya wapoizoni wa fluoride. Kukhathamiritsa kwa njira: gwiritsani ntchito zowunikira kutentha kwa ng'anjo, fufuzani zowoneka (zowoneka bwino, zosinthika), ndikuyesa kuyesa kukoka matepi. Nthawi zonse onetsetsani kutentha kokwanira.

Nsalu ya PTFE yotentha kwambiri imafuna kusamala mosamala kuti zitsimikizire chitetezo ndi moyo wautali. Njira zazikulu zodzitetezera: musapitirire 260 ° C (pamwamba pa 320 ° C imatulutsa utsi wapoizoni), pewani zowomba (zopaka ming'alu, zowonetsa magalasi a fiberglass), osatsuka ndi abrasive (ubweya wachitsulo umawononga malo osamangira ndodo), sungani chilolezo chokulitsa kutentha (kuletsa kung'ambika), ndikusintha pamene matuza kapena kusenda. Sitolo idagubuduzika, kutali ndi UV. Valani magolovesi oteteza kutentha mukamagwira ntchito.

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.

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.