PTFE high-zazzabi tef yana da kyau kwarai gishiri fesa juriya, amma rauni maki ne m Layer da fiberglass substrate gefuna. Hanyoyin kimantawa: Gwajin gishiri mai tsaka-tsaki na 1000h (NSS), ma'aunin ƙarfin ƙarfin kwasfa (≥80% da ake buƙata), lahani na gani (ɗagawa, blistering), da lalata substrate na ƙarfe. Don mahalli na ruwa da gishiri-gishiri mai tsayi: yi amfani da PSA silicone (ba acrylic) ba, PTFE mai cike da ciki, gefuna tare da mai jure yanayin yanayi, sannan shafa firam a saman saman ƙarfe.

Silicone matsa lamba-sensitive adhesives (PSA) don PTFE high-zazzabi kaset bambanta yadu a cikin high-zazzabi na aikin tsufa. Methylphenyl silicone PSA yana riƙe> 85% ƙarfin kwasfa bayan kwanaki 250 ° C/7, yayin da daidaitaccen nau'in methyl ya faɗi zuwa 50-70%. Tsarukan da aka warkar da su (hydrosilylation) suna ba da kwanciyar hankali fiye da warkewar peroxide. Don ci gaba da sabis na 200°C+, zaɓi ƙarin makin da aka warkar da babban-phenyl.

Tef ɗin PTFE masu ɗaukar zafi na zafin jiki (PSA) dole ne su gudanar da zafi yayin tsayawa tsayin daka. Ƙara filaye yana inganta haɓakar zafin jiki amma yana cutar da mannewa. Mafi kyawun ma'auni yana amfani da ƙananan barbashi (kamar kwarangwal mai ɗaukar nauyi) gauraye da ɓangarorin lafiya (don cike ɓoyayyi) tare da adana jimlar filler sama da madaidaicin ƙofa. Ka guji flakes da zaruruwa; suna kashe wuta.

PTFE high-zazzabi tef hidimar PV masana'antu a cikin biyu daban-daban matsayi: aiwatar cinyewa (hana EVA ambaliya mannewa a kan laminators, solder mask) da kuma tsawon rai rufi (busbar kunsa, junction akwatin gyarawa). Don dindindin amfani na ciki, kaset dole ne su wuce IEC 61215: 1000-2000h zafi zafi, UV, thermal keke (-40 ° C zuwa + 85 ° C), tare da silicone PSA da shrinkage <1%.

PTFE high-zazzabi tef shafi zafi-sealing wukake da sealing tube isar hudu core dabi'u: hana narkakkar roba manne (kau da downtime), kare tsada sealing mutu, homogenizes zafi / matsa lamba ga m hatimi, da kuma rage fim gogayya. Tef mai goyan bayan fiberglass (0.13-0.25 mm) tare da silicone PSA (≥260°C) ana bada shawarar. Anti-a tsaye baƙar tef don manyan layukan sauri.

The ruwa tururi shãmaki dukiya na PTFE m tef an ƙaddara da farko ta shafi lahani (micropores, microcracks, fiber wicking) maimakon PTFE ta intrinsic hydrophobicity. Fim ɗin PTFE mai tsabta yana ba da matsakaicin WVTR kawai. Multi-Layer shafi da lamellar fillers (mica, gilashin flakes) haifar da labyrinth sakamako, da matuƙar rage tururi watsa. Don babban hatimin hatimi, ƙididdige riguna masu yawa.

Crep juriya na PTFE high-zazzabi m tef a karkashin dogon lokaci m load (musamman a 200-260 ° C) an ƙaddara da abubuwa biyu: silicone PSA crosslink yawa (mafi girma crosslinking hana kwarara) da kuma substrate irin (fiberglass-ƙarfafa PTFE tsayayya sanyi creep; tsarki PTFE film cree). Manne wanda ba a haɗa shi ba yana kasawa da sauri a babban zafi. Yadudduka masu kauri suna ƙara haɗarin haɗari.

Don kaset ɗin zafin jiki na PTFE a ƙarƙashin nutsewa na dogon lokaci, PTFE substrate ɗin ya kasance marar amfani da sinadarai, amma manne Layer shine wurin rauni. Ruwa yana raunana PSA silicone; ruwan gishiri yana hanzarta lalata. Don sinadarai masu haɗari, ana buƙatar fluorosilicone ko perfluoropolyether adhesives - ko tef ɗin PTFE mara mannewa - ana buƙata. Ƙarfin kwasfa har zuwa 40% bayan sa'o'i 48 a cikin ruwa.

PTFE babban tef ɗin zafin jiki yana buƙatar ajiya mai kyau don kula da mannewa, sassauci, da aikin sakin sa. Mahimmin buƙatun sun haɗa da sarrafa zafin jiki (10-30°C), zafi ƙasa da 60%, nisantar haske, keɓancewar sinadarai, sanyawa a tsaye, da samun iska. Bi tsarin sarrafa kayan FIFO kuma bincika akai-akai.

Matsakaicin canjin gilashin (Tg) na mannen matsi na silicone yana kusa da -120 ° C - ƙasa da ƙasa da adhesives na acrylic. Wannan matsananci-ƙananan Tg yana kiyaye tef ɗin PTFE mai zafi mai sauƙi kuma mai ɗanɗano har ma a -70 ° C, yana hana fashewar fashewa da ba da damar amintaccen mannewa a cikin aikace-aikacen cryogenic.