Tef ɗin PTFE mai faɗin zafin jiki yana buƙatar PSA silicone wanda ke kiyaye mannewa daga -70°C zuwa 260°C. Maɓallin ƙira mai mahimmanci: Layer na tsaka-tsakin tsaka-tsaki (hana delamination), microstructure na tsibirin teku (MQ resin tsibiran + polysiloxane ci gaba da lokaci), gradient crosslinking (high-density Layer Layer for creep juriya, low-density m Layer for low-temp tack), da zafi-stabilized fillers (cerium oxide for oxide for oxide). ɓangarorin siloxane da aka gyaggyara Phenyl suna hana ƙarancin zafin jiki, yana ba da damar sassauci a ƙasa -100°C.

A lokacin PTFE tef shafi, da sauran ƙarfi volatilization kudi na silicone matsa lamba-m m ne m tsari siga. Sauri da yawa → Fatar jiki, rashin daidaituwa, raƙuman raƙuman ruwa (maganin tarko), da raƙuman ruwa (magudanar ruwa ko gurɓatawa). Jinkirin → sagging, kauri gefuna, da dewetting a kan ƙananan-makamashi PTFE. Kyakkyawan dabara: jinkirin jujjuyawar farko don daidaitawa da kumfa kumfa, sannan hanzarta bushewa don siffata. Yi amfani da gauraye masu kaushi (toluene/xylene + bushewa da sauri) da zafin jiki na gradient (ƙananan → matsakaici → high).

Tef mai zafin jiki na PTFE yana asarar mannewa bayan amfani da shi akai-akai saboda gurɓatar ƙasa (ƙura, man silicone), gazawar haɗin gwiwa (raguwa), ko haɗin haɗin ƙasa mai rauni. Magani: high-crosslink silicone PSA (ƙananan ƙaura, daidaitaccen matsewa / ikon riƙewa), jiyya na farko a kan madaidaicin PTFE, goyan bayan fiberglass mai yawa, da kulawa mai kyau (tsaftace saman, kwasfa mai sanyi, kusurwar 180°). Gwajin ƙididdiga yana tabbatar da haɓakawa.

PTFE high-zazzabi kaset da aka adana a cikin siffan nadi zai iya sha wahala daga interlayer adhesion (tarewa) da kuma canja wurin m zuwa ga mara sanda gefe. Tushen haddasawa: PTFE fim na roba ƙwaƙwalwar ajiya da silicone PSA creep karkashin matsa lamba da zafi. Magani: tashin hankali mai jujjuyawar gradient - matsattse a kan yadudduka na waje, sako-sako da yadudduka na ciki - ta amfani da sarrafa tashin hankali-madauki. Cikawa tare da suturar saki, ma'auni mai dacewa (15-40 ° C, 30-70% RH), jeri a kwance, da jujjuyawar kwata-kwata.

Tef mai zafin jiki na PTFE da aka yi amfani da shi a cikin hulɗar abinci dole ne ya mutunta ƙayyadaddun zafin jiki: ≤260°C don ci gaba da amfani (ba iyaka), 260-300°C har zuwa mintuna 30 kawai, kuma> 300°C haramta. Tef ɗin don tuntuɓar kai tsaye ne kawai (masu linin tire, murfin zafi), ba nade abinci kai tsaye ba. Kada a taɓa yin aiki ba tare da nauyin abinci ba (bushewar dumama). Sauya idan blish, yellowed, ko sawa.

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.