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 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 imakhala ndi kukana kutsitsi kwa mchere, koma mfundo zofooka ndi zomatira ndi m'mphepete mwa fiberglass gawo lapansi. Njira zowunikira: Kuyesa kwa 1000h osalowererapo mchere wa mchere (NSS), kuyeza kusungidwa kwa peel mphamvu (≥80% yofunika), zolakwika zowoneka (kukweza, kuphulika), ndi dzimbiri lachitsulo. Pamalo am'madzi komanso okhala ndi chifunga chamchere wambiri: gwiritsani ntchito silicone PSA (osati acrylic), gawo lapansi la PTFE lokhazikika, sindikizani m'mphepete ndi chosindikizira cholimbana ndi nyengo, ndikuyika zoyambira pazitsulo.

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.

Tepi ya PTFE yotentha kwambiri yosungidwa pansi pamikhalidwe yodziwika (10-25 ° C, 40-70% RH, kutali ndi UV / kupanikizika kwakukulu) imakhala ndi moyo wa alumali wa miyezi 3-6 (makalasi apamwamba mpaka miyezi 12). Zofunika zowonongeka: mphamvu ya peel siyenera kutsika pansi pa 70% ya mtengo woyamba; palibe zotsalira zomatira pambuyo pochotsa kutentha kwakukulu; palibe carbonization kapena akulimbana pa kutentha oveteredwa. Kufufuza mwachangu: kumasuka kwapamanja, kuyesa kotsalira kwa 260 ° C, ndi kuyesa kwa lamination shrinkage.

Tepi yopukutidwa ya PTFE imatha kupanga zomatira zolumikizira (kutsekereza) ndi kusamutsa zomatira panthawi yosungirako nthawi yayitali. Zomwe zimayambitsa: PTFE filimu zotanuka kukumbukira ndi silikoni PSA amakwawa pansi pa kupsyinjika / kutentha. Katetezedwe: Kumangika kwa gradient (zolimba zakunja, kumasuka mkati) panthawi yopanga, kuphatikiza kutulutsa zokutira kumbali yosamatira. Sungani pa -15 ° C mpaka 40 ° C, 30-70% RH, yopingasa pazitsulo, tembenuzani mpukutu uliwonse. Kuti muwonjezere zomatira, onjezerani mapepala otulutsa pakati pa zigawo.

PTFE matepi kutentha kwambiri osungidwa mu mpukutu mawonekedwe akhoza kuvutika ndi interlayer adhesion (kutsekereza) ndi zomatira kusamutsidwa ku non-ndodo mbali. 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 zomatira za silicone (PSA) za PTFE matepi otentha kwambiri zimasiyana kwambiri pakukalamba kotentha 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.