Nkhaniyi ikukhudzana ndi zizindikiro zazikulu za PTFE tepi yotentha kwambiri yomwe imagwiritsidwa ntchito popaka vacuum, chithandizo cha kutentha kwa vacuum ndi malo ofanana. Zofunikira zazikulu zimasiyana kwambiri ndi kugwiritsa ntchito mlengalenga: kutulutsa mpweya ndikovuta kwambiri (TML≤1%, CVCM≤0.1%; magalasi owulutsa ndege / kuwala amafuna TML≤0.5%, CVCM≤0.01%); kukana kutentha kuyenera kutsimikiziridwa pa gawo lapansi la PTFE (260 ° C) ndi wosanjikiza zomatira; Siloxane PSA yoyeretsedwa mwapadera imafunikira kuti mupewe kuipitsidwa kwa siloxane; Kutentha kwakukulu kumalepheretsa kukwawa ndi kukweza m'mphepete; ukhondo sumafuna kukhetsa kwa ulusi komanso kutsika kwa ayoni; tepi yotsutsa-static (resistivity pamwamba 10⁶-10⁹ Ω/sq) imalepheretsa kuwonongeka kwa ESD; kukana kwa plasma kuyenera kuwunikidwa panjira za sputtering/PECVD; Kutsika kwamafuta pansi pa 2% kumatsimikizira kubisala bwino.

Nkhaniyi ikufananiza kutentha kwa chipinda ndi kutentha kwapamwamba kwa zomatira za PTFE za PTFE. Kutentha kwapamwamba (120-180 ° C) kumapanga maukonde ophatikizika okhala ndi mphamvu zolumikizana mwamphamvu, kuteteza zotsalira zomatira pambuyo pakusenda. Amapanga ma anchoring bond okhala ndi magawo a PTFE kudzera pa primer co-curing, kuchotsa ziwopsezo za delamination. Kutentha kwapamwamba kumachotsanso kusungunuka kwa mamolekyu musanayambe kubereka, kuteteza kuphulika ndi kuipitsidwa kwa mafuta a silicone pakuwotcha koyamba.

Bukuli limakhudza kusankha kwa tepi yotentha kwambiri ya PTFE pakumangira jekeseni ndi ntchito zotsutsana ndi ndodo. Kusankha kotengera kutentha: ≤260 ° C kwa pulasitiki wamba (standard silicone PSA tepi, 0.13-0.18mm); 260-300 ° C kwa mapulasitiki opangira kutentha kwambiri monga PC, PA66, POM (zomatira za silicone zapamwamba, 0.18-0.25mm); 300-400 ° C ya PEEK, LCP, PPS pafupi ndi othamanga otentha (tepi yomatira imalephera; gwiritsani ntchito nsalu ya PTFE yopanda zomatira kapena filimu ya PFA). Kusankhidwa kozikidwa pazida: zida zomangira zimafunikira malo omasuka a PTFE; magalasi/mineral zodzazidwa ndi zinthu zimafuna heavy-ntchito 0.25mm+ kuvala zosagwira tepi; zowonjezera zowononga zimafuna zomatira zosagwirizana ndi mankhwala ndi gawo lapansi lowundana; ma static-sensitive application amafunikira tepi yotsutsa-static yakuda ya PTFE.

PTFE- TACHIMATA fiberglass nsalu chimagwiritsidwa ntchito pokonza mphira chifukwa kutentha kukana, sanali ndodo katundu, ndi otsika mikangano. Ntchito zazikuluzikulu zikuphatikiza: kutulutsa zingwe za mbale / vacuum vulcanization ndi kuumba matayala; malamba osamata a mphero zotseguka, makalendala, ndi mizere yozizirira; nsalu yotchinga yosungiramo mphira yomaliza; kusamalira mwapadera silicone ndi fluororubber; ndi ma tray ovunikira kuti ayeretsedwe. Ubwinowu umaphatikizapo kuthetsa kumatira kwa nkhungu, kuchepetsa kugwiritsa ntchito zotulutsa, kuteteza kukulunga kwa ma roller, ndikuwonetsetsa kuti akugwetsa bwino.

PTFE tepi ya mankhwala chitoliro/chiwiya odana ndi dzimbiri, osati ndodo, ndi kusindikiza chitetezo amafuna kufananitsa gawo lapansi, dongosolo zomatira, ndi mankhwala media. Silicone PSA ikulimbikitsidwa 200-260 ° C ndi zidulo / alkalis; acrylic PSA imalimbana ndi zosungunulira za organic koma imachepetsa kutentha mpaka ≤150°C. Pa HF, kuwira > 80% alkali, kapena chlorine trifluoride, gwiritsani ntchito PTFE-only lining (palibe zomatira organic). Zovuta: zomatira ndiye ulalo wofooka kwambiri, osati PTFE yokha.

Mphamvu ya tepi ya PTFE imapangidwa bwino kudzera pakuyala ndi kukhathamiritsa kwa njira yochiritsa. ❖ kuyanika: zoyambira wosanjikiza (0.5-2μm silane primer kupewa zomatira peeling), zomatira makulidwe 30-60μm (mulingo woyenera kwambiri akugwira mphamvu), zingalowe defoaming, ndi 5-10μm kusefera. Kuchiza: Kutentha kwapang'onopang'ono (80-100 ° C kuchotsa zosungunulira → 120-140 ° C kuumba → 150-220 ° C deep crosslinking), post-curing (40-60 ° C kwa 24-48h kuti mupumule kupsinjika maganizo), ndi kutsika kwapakati kuti muteteze kupsyinjika kwamkati kuchokera ku kuchepa kwa gawo lapansi. The poyambirira ndi zofunika PTFE a otsika pamwamba mphamvu.

PTFE high-temperature tepi imakhala ngati chinthu chofunika kwambiri pakupanga semiconductor, osati chogwiritsidwa ntchito ponseponse. Ntchito zazikuluzikulu: chitetezo chawafer-level (ma plasma etching masking, chitetezo cham'mbuyo cha CMP, CVD/PVD masking), njira zopakira (kukhazikika kwa waya, chigoba cha soldering cha PCBs), ndi kukonza zida (anti-static roller kukulunga, cholemba pachipinda choyera). Zofunikira zoyera kwambiri: ma halogen otsika (amaletsa dzimbiri zomangira zomangira), siloxanes otsika (<500 ppm, amalepheretsa kupanga tinthu tating'ono), ma ion achitsulo otsika (<1 ppm iliyonse), ISO Class 4 cleanroom slitting/package, 10⁶ -10⁹ Ω TV surface resistivity, ndi kutsika kwa TV OC.

Tepi yachipatala ya PTFE yotentha kwambiri imaphatikiza gawo laling'ono la biocompatible PTFE ndi zomatira za silikoni zochiritsidwa ndi platinamu. Zofunika kwambiri: ISO 10993 yogwirizana (palibe cytotoxicity, sensitization, kapena irritation), imapirira kutsekereza mobwerezabwereza (steam/EO/gamma), 260°C kukana kutentha. Njira zodzitetezera: musapitirire 260 ° C (mafusi apoizoni opitilira 300 ° C), kuyatsa kwa gamma kungayambitse kutsekeka, kutsimikizira njira zotsekera, ndikupempha zolemba zonse zotsatila (malipoti a ISO 10993, MSDS, data yokalamba). Osati kuti agwiritse ntchito magazi achindunji kapena implantation pokhapokha atatsimikiziridwa mwachindunji.

PTFE tepi reusability zimadalira zinthu zinayi: zomatira chiphunzitso (mkulu crosslink kachulukidwe, otsika silikoni migration, microphase dongosolo kwa repositionable tack), gawo lapansi anangula (pamwamba kutsegula + zoyambira kuteteza kutengerapo zomatira kutengerapo), kumbuyo ❖ kuyanika (kumasula wosanjikiza kuteteza zomatira pa unwinding), ndi kagwiridwe koyenera (zoyera zomatira pamwamba, zomatira zolondola pamwamba, kupewa zomatira pamwamba). Zomatira zotsuka ndi madzi zimatha kuchira> 90% tack pambuyo poyeretsa.

Tepi ya PTFE yotalikirana ndi kutentha imafunikira silikoni PSA yomwe imasunga zomatira kuchokera -70°C mpaka 260°C. Zinthu zazikuluzikulu za mapangidwe: kusanjikiza koyambira koyambira (kuteteza kutsetsereka), kusanjikizana kwa zilumba za m'nyanja (MQ resin Islands + polysiloxane continuous phase), gradient crosslinking (kuchuluka kwamkati kwamkati kwa kukana kukwawa, kusanjikizana kwakunja kwa kutentha kochepa), ndi zodzaza ndi kutentha kwa oxidation (cerium resistance). Magawo a phenyl-modified siloxane amapondereza kutentha kwa crystallization, zomwe zimathandiza kusinthasintha pansipa -100 ° C.