PTFE tape for eddagala payipu / ekibya anti-okukulukuta, obutakwata, n'okusiba obukuumi yeetaaga okukwatagana substrate, adhesive enkola, n'eddagala emikutu. Silicone PSA esengekeddwa okubeera 200-260°C nga erimu asidi/alkali; acrylic PSA egumira ebizimbulukusa ebiramu naye ekoma ku bbugumu okutuuka ku ≤150°C. Ku HF, okufumba >80% alkali, oba chlorine trifluoride, kozesa PTFE-only lining (tewali organic adhesive). Ekikulu: adhesive ye link esinga obunafu, so si PTFE yennyini.

Teepu ya PTFE ey’ebbugumu erigazi yeetaaga silikoni PSA ekuuma okunywerera okuva ku -70°C okutuuka ku 260°C. Ebintu ebikulu ebikola dizayini: oluwuzi lw’enkyukakyuka olusiddwako ennanga (primer-anchored transition layer), microstructure y’ebizinga by’ennyanja (MQ resin islands + polysiloxane continuous phase), gradient crosslinking (oluwuzi olw’omunda olwa density ennene okusobola okuziyiza creep, oluwuzi olw’ebweru olwa density entono okusobola okuziyiza ebbugumu entono), n’ebijjuza ebinyweza ebbugumu (cerium oxide okuziyiza oxidation). Ebitundu bya siloxane ebikyusiddwa Phenyl binyigiriza okufuuka ekiristaayo eky’ebbugumu eri wansi, ne kisobozesa okukyukakyuka wansi wa -100°C.

Ensengeka ya ffeesi y’enkomerero esaliddwa eya PTFE ey’ebbugumu eringi ekosa butereevu okukulukuta kw’okusiiga n’okusitula ku mbiriizi mu kiseera ky’okusiiga. Okusala obubi (ebiso ebizibu, enkoona etali ntuufu) kuleeta ebiwuzi bya kalaamu, kugonza oluwuzi olusiiga ku mabbali, n’okubikkula ebiwujjo bya fiberglass – ekivaako okukulukuta, okukwatagana okunafu, n’okusitula wansi w’ebbugumu oba okusika omuguwa. Feesi z’enkomerero ezitali za bulijjo (eziriko amayengo, ezifuluma) zireeta okusaasaana kwa puleesa okutali kwenkanankana, okuvuga okuseeyeeya kw’okusiiga mu kiseera ky’okutereka. Feesi y’enkomerero ennungi ebeera nnyonjo, efuumuuka, era teyonoona – ekola nga seal esiba ekyesiiga n’okukakasa okukwatagana mu bujjuvu.

Mu kiseera ky’okusiiga ttaapu ya PTFE, omuwendo gw’okuwunya kw’ekizimbulukusa (solvent volatilization rate) gwa silikoni puleesa-sensitive adhesive is a critical process parameter. Mangu nnyo → okuzimba olususu ku ngulu, okutereera obubi, ebituli bya ppini (ekizimbulukusa ekikwatiddwa), n’ebinnya (okufuumuuka oba okuleetebwa obucaafu). Mpola nnyo → okugwa, empenda enzito, n’okuggyamu amazzi ku PTFE ey’amasoboza amatono ku ngulu. Enkola ennungi: okufuumuuka empola okusooka okusobola oku leveling n’okutoloka mu bubble, olwo okukala amangu okusobola okubumba. Kozesa ebizimbulukusa ebitabuddwa (toluene/xylene + okukala amangu) n’ebbugumu lya oven erya gradient (low→medium→high).

PTFE tape ya bbugumu eringi efiirwa okunywerera oluvannyuma lw’okugikozesa enfunda eziwera olw’obucaafu obw’okungulu (enfuufu, amafuta ga silikoni), okulemererwa kw’okukwatagana kw’okusiiga (ebisigadde), oba okusiba kwa substrate okunafu. Ebigonjoolwa: high-crosslink silicone PSA (okusenguka okutono, balanced tack/holding power), okujjanjaba primer ku PTFE substrate, dense fiberglass backing, n’okukwata obulungi (okuyonja kungulu, cool peel, 180° angle). Okukebera mu bungi kukakasa okulongoosa.

PTFE obutambi obw’ebbugumu eringi obuterekeddwa mu ngeri y’omuzingo busobola okutawaanyizibwa okunywerera wakati wa layeri (okuzibikira) n’okukyusa okwesiiga ku ludda olutakwata. Ebikoola ebivaako: PTFE film elastic memory ne silicone PSA creep wansi wa puleesa n’ebbugumu. Ekigonjoola: okusika omuguwa mu bbanga (gradient winding tension) – kunywevu ku layers ez’ebweru, okusumululwa ku layers ez’omunda – nga okozesa okufuga okusika kwa closed-loop. Okujjuliza n’okusiiga okusumulula, okutereka obulungi (15-40°C, 30-70% RH), okuteeka mu bbanga, n’okukyusakyusa omuzingo buli luvannyuma lwa myezi esatu.

PTFE ttaapu ey’ebbugumu eringi ekozesebwa mu kukwatagana n’emmere erina okussa ekitiibwa mu kkomo ly’ebbugumu erikakali: ≤260°C okukozesebwa obutasalako (tewali kkomo ku budde), 260-300°C okumala eddakiika eziwera 30 zokka, ne >300°C ekugirwa. Tape eno ya kukwatagana butereevu kwokka (tray liners, heat sealer covers), so si kuzinga mmere butereevu. Tokolangako nga tolina mmere (dry heating). Kikyuseemu singa oba olina ebizimba, ebya kyenvu oba ebyambala.

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 conductive skeleton) obutabuddwamu obutundutundu obutono (okujjuza ebifo ebitaliimu), okukuuma omugatte gw’okutikka okujjuza 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 erya 1000-2000h, UV, enzirukanya y’ebbugumu (-40°C okutuuka ku +85°C), nga silikoni PSA n’okukendeera <1%.