PTFE teyp a ɛyɛ hyew kɛse no wɔ nkyene a wɔde petepete so yiye, nanso nea ɛyɛ mmerɛw ne ade a wɔde nkata so ne fiberglass substrate no anoano. Akwan a wɔfa so yɛ nhwehwɛmu: 1000h neutral salt spray (NSS) sɔhwɛ, susuw peel ahoɔden a ɛkora so (≥80% a ɛho hia), aniwa mu sintɔ (ma so, blistering), ne dade substrate corrosion. Sɛ wopɛ po ne mmeae a nkyene nsuonwini pii wɔ mu a: fa silicone PSA (ɛnyɛ acrylic), PTFE substrate a wɔde ahyɛ mu ma koraa di dwuma, fa sealant a ɛko tia wim tebea kata anoano, na fa primer gu dade so.

Silicone pressure-sensitive adhesives (PSA) ma PTFE ɔhyew kɛse teyp ahorow no gu ahorow kɛse wɔ ɔhyew a ɛkorɔn onyin adwumayɛ mu. Methylphenyl silicone PSA kura >85% peel ahoɔden wɔ 250°C/7 nna akyi, bere a standard methyl type no so tew kɔ 50-70%. Addition-cured (hydrosilylation) nhyehyɛe ahorow ma egyina pintinn yiye sen peroxide-cured. Sɛ wopɛ 200°C + som a ɛkɔ so a, paw ade a wɔde ka ho-cured high-phenyl grades.

Ɛsɛ sɛ PTFE pressure-sensitive adhesive (PSA) teyp a ɛma ɔhyew kɔ ɔhyew mu bere a ɛkɔ so yɛ nnam no. Sɛ wode fillers ka ho a, ɛma ɔhyew a ɛkɔ nipadua no mu no tu mpɔn nanso ɛyɛ adhesion yaw. Optimal balance de spherical coarse particles (sɛ conductive skeleton) afrafra fine particles (de ahyɛ voids ma), na ama total filler loading kɔ so tra percolation threshold no so pɛɛ. Kwati flakes ne nhama a wɔde hyɛ mu; wokum tack.

PTFE teapɔn a ɛyɛ hyew kɛse som PV nnwuma no wɔ dwumadi ahorow abien a ɛsono emu biara mu: adeyɛ a wɔde di dwuma (siw EVA a ɛboro so a ɛbata ho wɔ laminators so, solder mask) ne nkwa tenten a wɔde siw ano (busbar wrap, junction box fixation). Sɛ wode bedi dwuma daa wɔ mu a, ɛsɛ sɛ teapɔn no twa IEC 61215: 1000-2000h ɔhyew a ɛyɛ nwini, UV, ɔhyew kyinhyia (-40°C kosi +85°C), a silicone PSA ne shrinkage <1%.

PTFE teyp a ɛyɛ hyew a ɛkorɔn a wɔde gu nnade a wɔde sɔ ɔhyew ano ne nhama a wɔde hyɛ mu so no de nneɛma atitiriw anan ma: esiw plastic a wɔabɔ no a ɛbata ho no ano (eyi bere a wɔde gyae adwuma no fi hɔ), ɛbɔ nsɔano a ne bo yɛ den ho ban, ɛma ɔhyew/nhyɛso yɛ pɛ ma nsɔano a ɛkɔ so daa, na ɛtew film friction so. Wɔkamfo teyp

Nsuo a ɛyɛ hyew akwansideɛ su a ɛwɔ PTFE adhesive tape no mu no, wɔde katasoɔ sintɔ (micropores, microcracks, fiber wicking) titire na ɛkyerɛ sene PTFE no mu nsuo a ɛyɛ hu. Pure PTFE sini de WVTR a ɛwɔ mfinimfini nkutoo ma. Multi-layer coating ne lamellar fillers (mica, glass flakes) ma labyrinth nkɛntɛnso, na ɛtew vapor transmission so kɛse. Sɛ wopɛ sɛ wode nsɔano a ɛyɛ nwini kɛse hyɛ mu a, kyerɛ nneɛma a wɔde kata so a ɛyɛ den.

PTFE a ɛyɛ hyew a ɛkorɔn adhesive tape no creep resistance wɔ bere tenten daa adesoa ase (titiriw wɔ 200-260°C) no, nneɛma abien na ɛkyerɛ: silicone PSA crosslink density (crosslinking a ɛkorɔn siw nsu a ɛsen) ne substrate type (fiberglass-reinforced PTFE gyina awɔw creep; pure PTFE film creeps). Ade a wɔde nkata so a wɔmfa nhama nkɔ mu no di nkogu ntɛmntɛm wɔ ɔhyew a ano yɛ den mu. Ntama a ɛyɛ den a wɔde nkata so no ma asiane a ɛwɔ hɔ sɛ wɔbɛwea no yɛ kɛse.

Wɔ PTFE teyp a ɛyɛ hyew kɛse wɔ bere tenten a wɔde hyɛ mu ase no, PTFE substrate no da so ara yɛ nea nnuru ntumi nyɛ adwuma, nanso ade a wɔde nkata so no ne ade a ɛyɛ mmerɛw. Nsu ma silicone PSA yɛ mmerɛw; nkyene nsu ma nsu a ɛyɛ hyew no yɛ ntɛmntɛm. Wɔ nnuru a ɛyɛ den ho no, fluorosilicone anaa perfluoropolyether adhesives – anaasɛ PTFE tape a adhesive nnim – ho hia. Peel ahoɔden a ɛyera kodu 40% wɔ nnɔnhwerew 48 akyi wɔ nsu mu.

PTFE teapɔn a ɛyɛ hyew kɛse hwehwɛ sɛ wɔkora so yiye na ama akɔ so abata ho, ayɛ nsakrae, na ayɛ adwuma yiye. Nneɛma atitiriw a wɔhwehwɛ ne ɔhyew a wɔhwɛ so (10-30°C), ɔhyew a ɛba fam sen 60%, hann a wɔkwati, nnuru a wɔde bɛtew wɔn ho, nea wɔde besi hɔ gyina hɔ, ne mframa a wɔde bɛma. Di FIFO nneɛma a wɔakora so no sohwɛ akyi na hwɛ mu daa.

Glass nsakraeɛ hyew (Tg) a ɛwɔ silicone nhyɛsoɔ-te nka adhesive mu no bɛyɛ -120°C – ɛba fam koraa sene acrylic adhesives. Saa Tg a ɛba fam koraa yi ma PTFE teyp a ɛyɛ hyew kɛse no yɛ nea ɛyɛ mmerɛw na ɛyɛ nnam wɔ -70°C mpo, na esiw mpaapaemu a ɛyɛ mmerɛw ano na ɛma wotumi bata ho a wotumi de ho to so wɔ cryogenic dwumadie mu.