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.

Fiberglass nsalu matenthedwe shrinkage ndiye chifukwa chachikulu cha PTFE tepi dimensional kusakhazikika. Pa kutentha kwa PTFE sintering (360-400 ° C), kupsinjika kotsalira koluka kumatulutsidwa. Ngati sichiletsa, nsalu imachepa; Ngati atalephereka, kupsinjika kobisika kumatsekeredwa, kumapangitsa kuchepa pang'onopang'ono pakuchiritsa zomatira (150-200 ° C) ndikutentha komaliza. Yankho: gwiritsani ntchito magalasi a fiberglass asanayambe kutentha ndi <0.5% shrinkage pa 400 ° C, kuchotsa kupsinjika kotsalira musanayambe kupaka.

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.

Chodulidwa kumapeto kwa nkhope ya PTFE tepi yotentha kwambiri imakhudza kwambiri zomatira ndikukweza m'mphepete panthawi yogwiritsira ntchito. Kung'ambika kosawoneka bwino (masamba osawoneka bwino, ngodya zosayenera) kumapanga ulusi wa guluu, kufewetsa zomatira m'mphepete, ndikuwonetsa magalasi a fiberglass - zomwe zimatsogolera kutulutsa, kulumikizana kofooka, ndikutukuka pakutentha kapena kupsinjika. Nkhope zosawoneka bwino (zopindikira, zotuluka) zimayambitsa kugawanikana kosagwirizana, kuyendetsa zomatira kukwawa panthawi yosungira. Nkhope yabwino yomalizira ndi yosalala, yonyezimira, komanso yopanda kuwonongeka - imagwira ntchito ngati chisindikizo chomwe chimatseka zomatira ndikuonetsetsa kuti pali mgwirizano wonse.

Pa PTFE tepi ❖ kuyanika, zosungunulira volatilization mlingo wa silikoni kuthamanga tcheru zomatira ndi yofunika ndondomeko chizindikiro. Kuthamanga kwambiri → kusenda pamwamba, kusayenda bwino, zibowo (zosungunulira zotsekeredwa), ndi ma craters (kuundana kapena kupangitsidwa ndi zoyipitsidwa). Kuchedwa kwambiri → kugwa, m'mphepete mwakuda, ndikunyowetsa pa PTFE yamphamvu yotsika. Njira yoyenera: kusinthasintha koyambirira kwapang'onopang'ono pakuwongolera ndi kuthawa kwa thovu, kenako kufulumizitsa kuyanika kuti mupange mawonekedwe. Gwiritsani ntchito zosungunulira zosakanizika (toluene/xylene + kuyanika mwachangu) ndi kutentha kwa uvuni wa gradient (otsika → sing’anga →pamwamba).

Tepi ya PTFE yotentha kwambiri imataya kumamatira pambuyo pogwiritsidwa ntchito mobwerezabwereza chifukwa cha kuipitsidwa kwa pamwamba (fumbi, mafuta a silicone), kulephera kwa zomatira (zotsalira), kapena kugwirizanitsa kofooka kwa gawo lapansi. Mayankho: silicone ya high-crosslink PSA (kutsika pang'ono, kugwedeza bwino / kugwira mphamvu), chithandizo choyambirira pa gawo lapansi la PTFE, magalasi a fiberglass wandiweyani, ndikugwira bwino (malo oyera, peel ozizira, 180 ° angle). Kuyesa kwachulukidwe kumatsimikizira kusintha.