Silicone pressure-sensitive adhesives (PSA) na PTFE dzoxɔxɔ gã ƒe kasɛtwo to vovo ŋutɔ le dzoxɔxɔ gã ƒe tsitsi ƒe dɔwɔwɔ me. Methylphenyl silicone PSA léa >85% ƒe lãgbalẽ ƒe ŋusẽ ɖe te le 250°C/ŋkeke 7 megbe, esime methyl ƒomevi si wozãna ɖaa la ɖiɖina va ɖoa 50-70%. Addition-cured (hydrosilylation) systems naa liƒo nyuitɔ sã wu peroxide-cured. Ne èdi be yeawɔ dɔ le 200°C+ si yia edzi la, tia phenyl ƒe dzesi siwo wotsɔ kpe ɖe wo ŋu siwo woda gbe le.

Ele be dzoxɔxɔ ƒe PTFE pressure-sensitive adhesive (PSA) tapes nakplɔ dzoxɔxɔ esime wole ƒoƒom. Fillers tsɔtsɔ kpe ɖe eŋu nana dzoxɔxɔ ƒe tsɔtsɔme nyona ɖe edzi gake egblẽa nu le adhesion ŋu. Dadasɔ nyuitɔ zãa nu suesuesue siwo le dzogoe ene me siwo le ƒuƒuie (abe ƒunukpeƒe si kplɔa nu ene) siwo wotsɔ tsaka kple nusue suesuesuewo (be woatsɔ ayɔ teƒe siwo le ƒuƒlu me), si wɔnɛ be agba si wotsɔ yɔa nuawo katã me nɔa tsi si sina toa eme ƒe dzidzenua dzi vie. Ƒo asa na flakes kple fibers; wowua tack.

PTFE dzoxɔxɔ gã tape subɔa PV dɔwɔƒea le akpa vovovo eve me: dɔwɔwɔ consumable (xea mɔ na EVA overflow adhesion le laminators, solder mask) kple agbe didi xɔxlɔ̃ (busbar wrap, junction box fixation). Be woazã ememe tegbee la, ele be kasɛtwo nato IEC 61215: 1000-2000h dzoxɔxɔ si me tsi le, UV, dzoxɔxɔ ƒe tsatsam (-40°C va ɖo +85°C), kple silicone PSA kple shrinkage <1%.

PTFE ƒe dzoxɔxɔ gã ƒe kasɛt si wotsɔ dea dzoxɔxɔ-nutrenu hɛwo kple nutrenu ƒe kakɛwo ŋu naa asixɔxɔ vevi ene: xea mɔ na plastik si wotsɔ ƒo ƒu ƒe ƒoƒo (eɖea ɣeyiɣi si me womewɔa dɔ o ɖa), ekpɔa nutrenu siwo xɔ asi ta, enaa dzoxɔxɔ/nyaƒoɖeamenu ɖeka hena nutrenu siwo nɔa anyi ɖaa, eye wòɖea film ƒe ʋuʋu dzi kpɔtɔna. Wokafui be woatsɔ fiberglass-backed tape (0.13-0.25 mm) si me silicone PSA (≥260°C) le. Anti-static black tape na fli siwo zɔna kabakaba.

Wokpɔa tsi ƒe dzoxɔxɔ mɔxenu ƒe nɔnɔme si le PTFE adhesive tape ŋu koŋ to nutsyɔnu ƒe gbɔdzɔgbɔdzɔwo (micropores, microcracks, fiber wicking) me tsɔ wu PTFE ƒe intrinsic hydrophobicity. Pure PTFE film naa WVTR si le titina ko. Multi-layer coating kple lamellar fillers (mica, glass flakes) wɔa labyrinth effect, si ɖea yaƒoƒo ƒe kaka dzi kpɔtɔna ŋutɔ. Ne èdi be yeatsɔ nutrenu si me fafa le ŋutɔ la, gblɔ nusiwo woatsɔ atsyɔ nu wo dzi siwo me wode tsii.

PTFE ƒe dzoxɔxɔ gã ƒe adhesive tape ƒe creep tsitretsitsi le ɣeyiɣi didi ƒe agba madzudzɔmadzudzɔe te (vevietɔ le 200-260°C) la, wotsɔa nu eve dea dzesii: silicone PSA crosslink density (crosslinking si kɔkɔ wu xea mɔ na sisi) kple substrate ƒomevi (fiberglass-reinforced PTFE tsi tre ɖe cold creep ŋu; pure PTFE film creepps). Aŋe si wometsɔ ka blae o la doa kpo nu kabakaba ne dzoxɔxɔ sesẽ. Nusiwo wotsɔna léa nu ɖe ​​nu ŋu siwo le kpekpem wu dzia afɔku si le ʋuʋu me ɖe edzi.

Le PTFE dzoxɔxɔ gã tape si wozãna le abrasive sliding friction dɔwɔwɔwo, dzidzenu non-stick kple dzoxɔxɔ tsitretsitsi mesɔ gbɔ o. Tiatia ƒe dzidzenu veviwo: Taber abrasion ƒe bu (<15 mg/1000 cycles), PTFE ƒe nutsyɔnu si woɖɔli si yɔ fũu (carbon/graphite/MoS2), PV seɖoƒe ŋuti nyatakakawo, substrate ƒe ŋusẽ (≥200 N/cm), kple mating surface roughness (Ra 0.2-0.4 μm). Nugbɔ takpɔkpɔ nyuie kple eƒe kadodo blibo le vevie ŋutɔ na agbenɔƒe didi.

PTFE substrate nye dzetsi si wotsɔna ƒua gbe le dzɔdzɔme nu (tsi ƒe xɔxlɔ̃ <0.01%). Ke hã, tape ƒe dɔwɔwɔ bliboa nɔ te ɖe adhesive ƒomevi dzi: silicone PSA te ŋu nɔa te ɖe ƒumelãwo ƒe nɔnɔmewo nu (500-1000h dze sisi dodokpɔwo,>80% peel retention); acrylic PSA do kpo nu. Atikewɔwɔ nyuie le anyigba dzi, kuɖɔ manɔmee, kple nutrenu kple silicone nutrenu le nugbɔ le vevie ŋutɔ be kakaɖedzi nanɔ eŋu ɣeyiɣi didi le ƒuta nuƒolanɔƒewo kple tɔdziʋuwo.

PTFE fiberglass tape hiã dedienɔnɔ ŋuti ɖaseɖigbalẽ vevi etɔ̃: UL (elektrik kple dzo ƒe dedienɔnɔ), FDA (nuɖuɖu ƒe kadodo ƒe sedziwɔwɔ), kple ISO 9001:2015 (nyonyo dzi kpɔkpɔ). Kasɛt siwo ŋu woɖo kpee naa dɔwɔwɔ ɣesiaɣi, woƒe agbenɔƒe didi wu, eye ga si wozãna ɖe wo tɔ ta katã dzi ɖena kpɔtɔna togbɔ be ga si wozãna do ŋgɔ la lolo wu hã. Kpɔ ɖaseɖigbalẽwo dzi tẽ ɣesiaɣi kple dɔwɔƒe siwo naa ɖaseɖigbalẽwo.

Wozãa PTFE ƒe dzoxɔxɔ gã ƒe kasɛt le atikewɔwɔ ƒe akpa etɔ̃ me: dɔlékuiwutikewo takpɔkpɔ (autoclave trays, heat-seal packaging), dɔwɔnu ƒe anyigba dzi dɔdamɔnu (low-friction coating, electrical insulation), kple mɔ̃ siwo woate ŋu ade ame me (vascular grafts, sutures). Woto ISO 10993 dzi ɖo kpe nugbagbewo ƒe ɖekawɔwɔ dzi, eye FDA 21 CFR 177.1550 ɖo gɔmeɖoanyi nuwo ƒe dedienɔnɔ anyi.