ʻO ka lipine wela kiʻekiʻe ʻo PTFE he kūpaʻa paʻakai paʻakai maikaʻi loa, akā ʻo nā wahi nāwaliwali ka papa adhesive a me nā ʻaoʻao o ka fiberglass substrate. Nā ʻano loiloi: 1000h neutral salt spray (NSS) hoʻāʻo, ana i ka paʻa ʻana i ka ikaika peel (≥80% koi ʻia), nā hemahema ʻike (hoʻokiʻekiʻe, blistering), a me ka ʻino o ka substrate metala. No nā kaiapuni kai a me ka noe nui: e hoʻohana i ka PSA silicone (ʻaʻole acrylic), ka substrate PTFE i hoʻopiha piha ʻia, e hoʻopaʻa i nā ʻaoʻao me ka sealant kū i ka wā, a kau i ka primer ma nā ʻili metala.

ʻOkoʻa ʻokoʻa nā mea hoʻopili paʻi kiʻekiʻe kiʻekiʻe (PSA) no nā lipine wela kiʻekiʻe PTFE i ka hana ʻelemakule kiʻekiʻe. Mālama ka methylphenyl silicone PSA> 85% ka ikaika peel ma hope o 250 ° C / 7 mau lā, aʻo ka methyl type maʻamau e hāʻule i 50-70%. Hāʻawi nā ʻōnaehana hoʻōla hou (hydrosilylation) i ʻoi aku ka maikaʻi ma mua o ka hoʻōla ʻana o ka peroxide. No ka lawelawe mau ʻana he 200°C+, koho i nā māka kiʻekiʻe-phenyl i hoʻōla hou ʻia.

Pono nā lipine PTFE kaomi ʻana i ka thermally conductive pressure-sensitive adhesive (PSA). ʻO ka hoʻohui ʻana i nā mea hoʻopihapiha hoʻomaikaʻi i ka conductivity thermal akā e hōʻeha i ka adhesion. Hoʻohana ke kaulike maikaʻi loa i nā ʻāpana spherical coarse (e like me ka iwi conductive) i hui pū ʻia me nā ʻāpana maikaʻi (e hoʻopiha i nā hakahaka), e mālama ana i ka hoʻouka piha ʻana ma luna pono o ka paepae percolation. Hōʻalo i nā ʻōpala a me nā pulu; pepehi lakou i ke kui.

Hoʻohana ʻia ka lipine wela kiʻekiʻe o ka PTFE i ka ʻoihana PV ma ʻelua mau kuleana ʻokoʻa: ka hana hoʻopau (pale i ka EVA overflow adhesion ma nā laminators, solder mask) a me ka insulation lōʻihi (busbar wrap, junction box fixation). No ka hoʻohana mau ʻana i loko, pono nā lipine e hele i ka IEC 61215: 1000-2000h wela wela, UV, kaʻa uila wela (-40 ° C a +85 ° C), me ka silicone PSA a me ka emi ʻana <1%.

ʻO ka lipine wela kiʻekiʻe o ka PTFE i hoʻopili ʻia i nā pahi hoʻopaʻa wela a me nā paʻi sila e hāʻawi i ʻehā mau kumu waiwai: pale i ka hoʻoheheʻe ʻana i ka plastic adhesion (hoʻopau i ka downtime), pale i ka make sealing pipiʻi, homogenizes wela / kaomi no nā sila mau, a hoʻemi i ka friction film. Paipai ʻia ka lipine kākoʻo fiberglass (0.13-0.25 mm) me PSA silicone (≥260°C). Lipine ʻeleʻele anti-static no nā laina kiʻekiʻe.

Hoʻoholo nui ʻia ka waiwai o ka wai mahu o PTFE adhesive tape e ka uhi ʻana i nā hemahema (micropores, microcracks, fiber wicking) ma mua o ka PTFE intrinsic hydrophobicity. Hāʻawi ke kiʻi ʻoniʻoni PTFE maʻemaʻe WVTR wale nō. ʻO ka uhi ʻana i nā ʻāpana he nui a me nā mea hoʻopihapiha lamellar (mica, glass flakes) e hana i kahi hopena labyrinth, e hōʻemi nui ana i ka lawe ʻana i ka mahu. No ka hoʻopaʻa ʻana i ka haʻahaʻa haʻahaʻa, e hōʻike i nā uhi i hoʻopaʻa ʻia.

ʻO ke kūpaʻa ʻana o ka PTFE kiʻekiʻe-mehana adhesive lipine ma lalo o ka ukana mau loa (ʻoi aku ma 200-260 ° C) i hoʻoholo ʻia e nā kumu ʻelua: silicone PSA crosslink density (kiʻekiʻe crosslinking e pale i ka kahe) a me ke ʻano substrate (fiberglass-reinforced PTFE e kūʻē i ke anu kolo; nā kiʻiʻoniʻoni PTFE maʻemaʻe). Holo wikiwiki ka lāʻau hoʻopili ʻole i ka wela nui. Hoʻonui nā papa pipili mānoanoa i ka pōʻino kolo.

No ka PTFE kiʻekiʻe-mehana lipine ma lalo o ka lōʻihi-manawa immersion, ka PTFE substrate noho chemically inert, akā, ka adhesive papa ka mea nāwaliwali. Hoʻonāwaliwali ka wai i ka PSA silicone; ʻO ka wai paʻakai ka hoʻokē ʻino. No nā kinikona koʻikoʻi, koi ʻia nā fluorosilicone a i ʻole perfluoropolyether adhesives – a i ʻole ka lipine PTFE adhesive-free. ʻO ka pau ʻana o ka ikaika Peel a hiki i 40% ma hope o 48 mau hola i ka wai.

Pono ka lipine kiʻekiʻe o ka PTFE i ka mālama pono e mālama i kona adhesion, maʻalahi, a me ka hoʻokuʻu ʻana i ka hana. ʻO nā koi koʻikoʻi e pili ana i ka mālama ʻana i ka mahana (10-30 ° C), ka haʻahaʻa ma lalo o 60%, ka pale ʻana i ka māmā, ka hoʻokaʻawale ʻana i nā kemika, ka waiho ʻana i ke kūpaʻa, a me ka ea. E hahai i ka hoʻokele waiwai FIFO a nānā mau.

ʻO ka mahana hoʻololi aniani (Tg) o ka mea hoʻopili koʻikoʻi koʻikoʻi silicone ma kahi o -120°C - ʻoi aku ka haʻahaʻa ma mua o nā adhesive acrylic. Mālama kēia Tg ultra-haʻahaʻa i ka PTFE kiʻekiʻe-mehana lipine maʻalahi a paʻa a hiki i -70 ° C, e pale ana i ka haki ʻana a hiki i ka hoʻopili pono ʻana i nā noi cryogenic.