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.

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 zoyipa). Kuchedwetsa kwambiri → kugwa, m'mbali zokhuthala, 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.

PTFE matepi kutentha kwambiri osungidwa mu mpukutu mawonekedwe akhoza kuvutika interlayer adhesion (kutsekereza) ndi zomatira kusamutsira ku mbali yopanda ndodo. Zomwe zimayambitsa: PTFE filimu zotanuka kukumbukira ndi silikoni PSA zikwawa pansi pa mavuto ndi kutentha. Yankho: Kumangika kwa gradient - zolimba pazigawo zakunja, zomasuka m'kati mwake - pogwiritsa ntchito kuwongolera kotseka. Kuthandizira ndi zokutira zotulutsa, kusungirako koyenera (15-40°C, 30-70% RH), kuyika kopingasa, ndi kuzungulira kotala.

Tepi ya PTFE yotentha kwambiri yomwe imagwiritsidwa ntchito pokhudzana ndi chakudya iyenera kulemekeza malire a kutentha: ≤260 ° C kuti agwiritsidwe ntchito mosalekeza (palibe malire a nthawi), 260-300 ° C kwa mphindi 30 zokha, ndipo > 300 ° C ndizoletsedwa. Tepiyo ndi yongolumikizana mosalunjika kokha (ma tray liner, zotchingira kutentha), osati kukulunga chakudya mwachindunji. Osagwira ntchito popanda kuchuluka kwa chakudya (kutentha kowuma). Bwezerani ngati matuza, achikasu, kapena ovala.

Zomatira za silicone zotengera kupanikizika (PSA) za PTFE matepi otentha kwambiri zimasiyana mosiyanasiyana pakukalamba kwambiri. Methylphenyl silicone PSA imasungabe> 85% mphamvu ya peel pambuyo pa 250 ° C/7 masiku, pomwe mtundu wa methyl umatsikira mpaka 50-70%. Machitidwe owonjezera (hydrosilylation) amapereka kukhazikika kwabwinoko kuposa kuchiritsidwa ndi peroxide. Pantchito yopitilira 200°C+, sankhani magiredi apamwamba aphenyl owonjezera.

Thermally conductive PTFE pressure-sensitive adhesive adhesive (PSA) matepi ayenera kuchititsa kutentha pamene akumamatira. Kuwonjezera ma fillers kumapangitsa kuti matenthedwe azitha koma kumapweteka kumamatira. Mulingo woyenera kwambiri umagwiritsa ntchito tinthu tating'ono tozungulira (monga ma skeleton oyendetsa) osakanikirana ndi tinthu tating'onoting'ono (kudzaza ma voids), kusungitsa zodzaza zonse pamwamba pa chigawo cha percolation. Pewani flakes ndi ulusi; amapha zingwe.

Tepi ya PTFE yotentha kwambiri imathandizira makampani a PV m'maudindo awiri osiyana: njira zogwiritsira ntchito (zimaletsa kumatira kwa EVA kusefukira pa laminator, chigoba cha solder) ndi kusungunula kwa moyo wautali (kukulunga kwa mabasi, kukonza bokosi lolumikizana). Kuti mugwiritse ntchito kosatha mkati, matepi ayenera kudutsa IEC 61215: 1000-2000h kutentha kwachinyezi, UV, njinga yamoto yotentha (-40 ° C mpaka + 85 ° C), ndi silikoni PSA ndi shrinkage <1%.

Tepi ya PTFE yotentha kwambiri yomwe imagwiritsidwa ntchito pamipeni yosindikiza kutentha ndi zomangira zosindikizira zimapereka mfundo zinayi zazikuluzikulu: zimateteza kumamatira kwa pulasitiki yosungunuka (kuchotsa nthawi yopuma), kumateteza kusindikiza kokwera mtengo, kumapangitsa kutentha / kupanikizika kwa zisindikizo zosasinthasintha, ndi kuchepetsa kukangana kwa filimu. Fiberglass-backed tepi (0.13-0.25 mm) yokhala ndi silicone PSA (≥260 ° C) ikulimbikitsidwa. Anti-static wakuda tepi ya mizere yothamanga kwambiri.

The madzi nthunzi chotchinga katundu wa PTFE zomatira tepi anatsimikiza makamaka ndi ❖ kuyanika zolakwika (micropores, microcracks, CHIKWANGWANI wicking) osati PTFE a intrinsic hydrophobicity. Filimu yoyera ya PTFE imapereka WVTR yapakatikati yokha. Mipikisano wosanjikiza zokutira ndi lamellar fillers (mica, magalasi flakes) amapanga labyrinth zotsatira, kuchepetsa kwambiri kufala kwa nthunzi. Kuti musindikize chinyezi chambiri, tchulani zokutira zolimba.