Wannan labarin ya ƙunshi mahimman alamomin aiki don tef ɗin PTFE mai zafin jiki da aka yi amfani da shi a cikin suturar iska, jiyya mai zafi da makamantansu. Mahimman buƙatun sun bambanta da yawa daga amfani da yanayi: fitar da gas shine mafi mahimmanci (TML≤1%, CVCM≤0.1%; Aerospace/nauyin gani na buƙatar TML≤0.5%, CVCM≤0.01%); Dole ne a tabbatar da juriya na zafin jiki don duka PTFE substrate (260 ° C) da Layer m; Ana buƙatar PSA na silicone mai ƙarancin gas mai tsafta musamman don hana kamuwa da siloxane; Babban zafin jiki mai riƙe da iko yana hana haɓakawa da haɓakawa; tsabta ba ya buƙatar zubar da fiber da ƙananan abun ciki na ionic; tef anti-static (resistance surface 10⁶-10⁹ Ω/sq) yana hana lalacewar ESD; Dole ne a kimanta juriya na plasma don matakan sputtering / PECVD; thermal shrinkage kasa 2% yana tabbatar da daidaiton abin rufe fuska.

Wannan labarin yana kwatanta yanayin ɗaki da zafin jiki mai girma na mannen matsi na silicone don tef ɗin PTFE. Babban zafin jiki balagagge (120-180 ° C) yana haifar da manyan hanyoyin sadarwa masu haɗin gwiwa tare da ƙarfin haɗin kai mai ƙarfi, yana hana ragowar mannewa bayan kwasfa. Yana samar da haɗin haɗin sinadarai tare da PTFE substrates ta hanyar haɗin gwiwa na farko, yana kawar da haɗarin lalata. Babban zafin jiki balagagge kuma yana kawar da ƙananan ƙananan ƙwayoyin cuta kafin bayarwa, yana hana kumburi da gurɓataccen mai na silicone yayin dumama na farko.

Wannan jagorar ya ƙunshi zaɓin tef ɗin zafin zafin jiki na PTFE don gyaran gyare-gyaren allura da aikace-aikacen rigakafin sanda. Zaɓin tushen zafin jiki: ≤260 ° C don robobi na gabaɗaya (daidaitaccen tef ɗin PSA na silicone, 0.13-0.18mm); 260-300 ° C don robobi na injiniya na zafin jiki kamar PC, PA66, POM (manufin silicone mai zafi, 0.18-0.25mm); 300-400°C don PEEK, LCP, PPS kusa da masu gudu masu zafi (tef ɗin mannewa ya gaza; yi amfani da zane na PTFE mara ɗaure ko fim ɗin PFA). Zaɓin tushen kayan abu: kayan tacky suna buƙatar babban-saki mai tsabta PTFE; Gilashin / kayan da aka cika ma'adinai suna buƙatar nauyin nauyin 0.25mm + tef mai jurewa; abubuwan da ke lalata abubuwa suna buƙatar mannen sinadarai mai juriya da maɗauri mai yawa; aikace-aikace masu ƙarfi suna buƙatar tef ɗin PTFE baƙar fata mai-tsaye.

PTFE-rufi fiberglass zane da aka yadu amfani a roba sarrafa domin ta zafi juriya, da mara sanda dukiya, da kuma low gogayya. Maɓalli na aikace-aikacen sun haɗa da: na'urorin saki don faranti / ɓarna vulcanization da gyare-gyaren taya; bel ɗin jigilar da ba na sanda ba don buɗaɗɗen niƙa, kalanda, da layukan sanyaya; zanen interleave don ajiyar roba da aka kammala; na musamman handling na silicone da fluororubber; da tanda don bayan warkewa. Fa'idodin sun haɗa da kawar da mannewa, rage amfani da wakili na saki, hana abin nadi, da tabbatar da rushewar sassauƙa.

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.

Zaɓin takarda na saki ko fim ɗin fim da wakili na saki kai tsaye yana tasiri kwanciyar hankali na ajiya da aikin peeling na tef mai zafi mai zafi na PTFE. Wannan labarin ya kwatanta PET vs. kraft takarda substrates da silicone vs. fluorinated saki jamiái, bada shawarar da mafi kyau duka hade ga sifili-saura peeling da kuma dogon lokacin da AMINCI.