PTFE high-temperature tape erina okuziyiza okufuuyira omunnyo okulungi ennyo, naye ebinafu ye adhesive layer ne fiberglass substrate edges. Enkola z’okwekenneenya: okugezesa 1000h neutral salt spray (NSS), okupima okusigala kw’amaanyi g’ebikuta (≥80% kyetaagisa), obulema mu kulaba (okusitula, okuzimba ebizimba), n’okukulukuta kw’ekyuma wansi. Ku mbeera z’ennyanja n’ez’omunnyo omungi: kozesa silicone PSA (si acrylic), PTFE substrate efumbiddwa mu bujjuvu, ssinga ku mbiriizi n’ekiziyiza embeera y’obudde, era osiige primer ku byuma.

Silicone pressure-sensitive adhesives (PSA) ku PTFE obutambi obw’ebbugumu eringi zaawukana nnyo mu kukola kw’okukaddiwa okw’ebbugumu eringi. Methylphenyl silicone PSA ekuuma amaanyi g’ebikuta >85% oluvannyuma lwa 250°C/ennaku 7, ate ekika kya methyl ekya bulijjo kikka okutuuka ku 50-70%. Enkola eziwonyezebwa (addition-cured) (hydrosilylation) ziwa okutebenkera okulungi ennyo okusinga okuwonyezebwa perokisayidi. Okusobola okuweereza obutasalako ku 200°C+, londa ebika bya phenyl ebingi ebiwonye n’okugattako.

Obutambi obutambuza ebbugumu obwa PTFE pressure-sensitive adhesive (PSA) bulina okutambuza ebbugumu nga busigala nga bukwatagana. Okwongerako ebijjuza kiyamba okutambuza ebbugumu naye kiruma okunyweza. Bbalansi ennungi ekozesa obutundutundu obunene obw’enkulungo (nga amagumba agatambuza) obutabuddwamu obutundutundu obutono (okujjuza ebifo ebitaliimu), okukuuma okutikka kw’ekijjuza kwonna waggulu ddala w’omusingi gw’okukulukuta. Weewale ebikuta n’ebiwuziwuzi; batta tack.

PTFE high-temperature tape eweereza PV amakolero mu mirimu ebiri egy’enjawulo: enkola consumable (okuziyiza EVA overflow adhesion ku laminators, solder mask) n’obulamu obuwanvu insulation (busbar wrap, junction box fixation). Okusobola okukozesebwa munda enkalakkalira, obutambi bulina okuyita mu IEC 61215: ebbugumu ery’obunnyogovu 1000-2000h, UV, enzirukanya y’ebbugumu (-40°C okutuuka ku +85°C), nga silikoni PSA n’okukendeera <1%.

PTFE high-temperature tape essiddwa ku bbugumu-siba ebiso n’okusiba emiguwa etuwa emiwendo ena emikulu: okuziyiza okusaanuuka obuveera okunywerera (okumalawo downtime), okukuuma okusiba okufa okw’ebbeeyi, homogenizes ebbugumu / puleesa okusobola okusiba obutakyukakyuka, era okukendeeza firimu okusikagana. Teepu eriko fiberglass-backed tape (0.13-0.25 mm) nga eriko silicone PSA (≥260°C) ye kirungi. Anti-static black tape ku layini ez’amaanyi.

Eky’obugagga ekiziyiza omukka gw’amazzi ekya PTFE adhesive tape kisalibwa okusinga okusinziira ku buzibu bw’okusiiga (micropores, microcracks, fiber wicking) okusinga PTFE’s intrinsic hydrophobicity. Pure PTFE film egaba WVTR eya wakati yokka. Okusiiga okw’emitendera mingi n’okujjuza lamellar (mica, glass flakes) bikola ekikolwa kya labyrinth, ekikendeeza nnyo ku kutambuza omukka. Ku kusiba obunnyogovu obungi, laga ebizigo ebizitowa.

Obuziyiza okuseeyeeya (creep resistance) bwa PTFE high-temperature adhesive tape wansi w’omugugu ogutakyukakyuka ogw’ekiseera ekiwanvu (naddala ku 200-260°C) busalibwawo ensonga bbiri: silicone PSA crosslink density (okusalasala okw’amaanyi kuziyiza okukulukuta) n’ekika kya substrate (fiberglass-reinforced PTFE resists cold creep; pure PTFE film creeps). Uncrosslinked adhesive eremererwa mangu ku bbugumu eringi. Layers ezisiiga enzito zongera ku bulabe bw’okuseeyeeya.

Ku butambi bwa PTFE obw’ebbugumu eringi wansi w’okunnyika okumala ebbanga eddene, PTFE substrate esigala nga tekola kemiko, naye oluwuzi olusiiga lwe lunafu. Amazzi ganafuya silikoni PSA; amazzi g’omunnyo gayanguyira okukulukuta. Ku ddagala erikambwe, ebisiiga bya fluorosilicone oba perfluoropolyether – oba PTFE tape etaliimu adhesive – byetaagibwa. Okufiirwa amaanyi g’ebikuta okutuuka ku bitundu 40% oluvannyuma lw’essaawa 48 mu mazzi.

PTFE tape ya bbugumu eringi yeetaaga okutereka obulungi okusobola okukuuma okunywerera kwayo, okukyukakyuka, n’omulimu gw’okufulumya. Ebikulu ebyetaagisa mulimu okufuga ebbugumu (10-30°C), obunnyogovu wansi wa 60%, okwewala ekitangaala, okwawula eddagala, okuteeka mu nneekulungirivu, n’okuyingiza empewo. Goberera enzirukanya y’ebintu bya FIFO era okebere buli kiseera.

Ebbugumu ly’enkyukakyuka y’endabirwamu (Tg) y’ekyesiiga ekikwata ku puleesa ya silikoni eri kumpi -120°C – wansi nnyo okusinga ebisiiga bya akiriiki. Tg eno eya wansi ennyo ekuuma PTFE high-temperature tape nga ekyukakyuka era nga ekwatagana ne ku -70°C, okuziyiza brittle cracking n’okusobozesa okunywerera okwesigika mu cryogenic applications.