Kuyera kwazinthu zopangira ndiye maziko oyambira amtundu wa PTFE wotentha kwambiri. Zonyansa (zoyambira zotsalira, zopangira zinthu, ma ayoni achitsulo, zinthu zoipitsidwa) zimayambitsa kuwonongeka kwa kutentha msanga (mathovu, matuza opitilira 260 ° C), malo osamata (malo omatira), kuchepetsa kutchinjiriza kwa magetsi (kutayika kwa dielectric, kutsika kwamagetsi), kufowoketsa mphamvu zamakina (ndi kupsinjika kwachikasu), kufooka kwa makina (ndi kupsinjika kwachikasu). Zopangira zoyera kwambiri zimatsimikizira kuti FDA imagwirizana, imakhala ndi moyo wautali, nsalu ya PTFE yogwira ntchito kwambiri.

PTFE- TACHIMATA fiberglass nsalu nsalu sintering amafuna yeniyeni kugwira nthawi pa 370-400 °C. Ng'anjo zopitilira: 30-90s (zoonda) mpaka 3-5+ min (zokhuthala). Ng'anjo zamagulu: 5-15 min. Pansi-sintering kumayambitsa opaque, zokutira zaukali zomwe zimasenda; Kuchuluka kwa sinter kumayambitsa chikasu, brittleness, ndi kutulutsa mpweya wapoizoni wa fluoride. Kukhathamiritsa kwa njira: gwiritsani ntchito zowunikira kutentha kwa ng'anjo, fufuzani zowoneka (zowoneka bwino, zosinthika), ndikuyesa kuyesa kukoka matepi. Nthawi zonse onetsetsani kutentha kokwanira.

Nsalu ya PTFE yotentha kwambiri imafuna kusamala mosamala kuti zitsimikizire chitetezo ndi moyo wautali. Njira zazikulu zodzitetezera: musapitirire 260 ° C (pamwamba pa 320 ° C imatulutsa utsi wapoizoni), pewani zowomba (zopaka ming'alu, zowonetsa magalasi a fiberglass), osatsuka ndi abrasive (ubweya wachitsulo umawononga malo osamangira ndodo), sungani chilolezo chokulitsa kutentha (kuletsa kung'ambika), ndikusintha pamene matuza kapena kusenda. Sitolo idagubuduzika, kutali ndi UV. Valani magolovesi oteteza kutentha mukamagwira ntchito.

PTFE mkulu-kutentha nsalu n'kofunika mu zovala interlining makampani. Ntchito zazikulu: malamba osatha osatha amakina ophatikizana mosalekeza (amateteza zomatira zotentha zosungunuka, zomata zopanda makwinya), chivundikiro chosagwira ndodo ndi nsalu zomangira zosindikizira kutentha (amateteza ma platens kuti asaipitsidwe ndi zomatira), malamba otumizira madontho a madontho / zomatira zomatira kuyanika / sintering), ndi zovundikira nsapato zachitsulo zokanikizira zitsanzo. Kukhuthala kumachokera ku 0.13mm (padding yopepuka) mpaka 0.55mm (malamba onyamula katundu wolemera).

Anti-static PTFE nsalu zimatheka kudzera njira ziwiri zazikulu: ❖ kuyanika doping (kusakaniza conductive fillers ngati mpweya wakuda mu PTFE emulsion, kupanga percolation network pa ndende yovuta) ndi gawo lapansi kuluka (embedding ulusi conductive mu fiberglass nsalu). Kulimbana kwapamwamba kumayendetsedwa pa 10⁵–10⁹ Ω. Mfundo: pangani njira yoyendetsera yomwe imatulutsa ma static charges nthawi yomweyo, kupewa kudzikundikira kowopsa. Kuyika pansi ndikofunikira kuti ntchito igwire bwino.

Kuyanika ndi gawo lofunika kwambiri pakupanga nsalu za PTFE zotentha kwambiri. Zowonongeka zodziwika bwino ndi izi: kung'amba (kuyanika mwachangu, kupukuta khungu), kusuntha (tinthu tating'onoting'ono tating'onoting'ono), mapini / matuza (mpweya wotsekeka kapena nthunzi), mawanga oyera ndi choko (kusuntha kwa surfactant kapena kusakanizika kosakwanira), chikasu / kuphika (kutenthedwa kwa zowonjezera), delamination (kutsika kwapang'onopang'ono) shrinkage), pamwamba youma koma mkati monyowa (kukopa misampha chinyezi), ndi m'mbali zokhuthala (khofi-ring effect). Zothetserazo zimaphatikizapo mbiri yowumitsa bwino, mpweya wabwino, ndi kusamalidwa bwino kwa gawo lapansi.

Kuyanika koyenera kwa nsalu ya fiberglass ndikofunikira pakupaka kwa PTFE, kuyika utomoni, kapena kuyanika. Mankhwala atatu akuluakulu: kuchotsa chinyezi pa 105-120 ° C (10-30 min malinga ndi kulemera kwake), kuyeretsa kwa dewaxing / kutentha kwa 300-450 ° C (LOI <0.1%, kupewa> 500 ° C), ndi kutentha kwa 60-100 ° C musanayambe kupaka. Yang'anirani kutentha kwa uvuni (± 5 ° C), kukakamiza kutulutsa chinyezi, ndikuteteza nsalu zothira silane pansi pa 110 ° C. Sungani nsalu zouma m'matumba osindikizidwa kapena zipinda zouma (<30 ° C, <40% RH).

Nsalu yotentha kwambiri ya PTFE (PTFE-yokutidwa ndi fiberglass) imapereka zabwino zinayi zazikulu monga anti-corrosion lining: inertness mankhwala (amatsutsa aqua regia, alkalis amphamvu, zosungunulira), kutentha kwakukulu (-70 ° C mpaka 260 ° C mosalekeza, 350 ° C pachimake), kukhazikika kwa dimensional (<0.5% kukhazikika), kuletsa kukhazikika kwapamwamba (<0.5%) Amagwiritsidwa ntchito m'mapaipi amankhwala, nsanja za desulfurization, matanki otola, ndi zida zazakudya/zamankhwala. Maphunziro a FDA alipo.

Nsalu yotentha kwambiri ya PTFE imapereka zabwino zisanu ndi chimodzi monga lamba wosindikizira wosindikizira: osagwira ndodo (mpaka wosindikizira ndi inki kumasulidwa mwaukhondo), 260°C kutentha kukana (kuyanika bwino), kukhazikika kwa dimensional (<0.5% elongation, kulembetsa kolondola), inertness yamankhwala (imakana phala la dzimbiri), kugunda kwamtundu, kutsika kwamtundu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu, kutsika kwamphamvu (kutentha kwapakati), antistatic). Zoyenera kusindikiza pazenera, kusindikiza kwa digito, ndi ntchito zosinthira kutentha.

Moyo wa ntchito ya nsalu ya PTFE yotentha kwambiri umasiyana kwambiri ndi kagwiritsidwe ntchito. Mankhwala odana ndi dzimbiri amatha kukhala zaka 3+ (4x motalika kuposa mphira). Ma tray ophikira chakudya miyezi yapitayi ndi kuwonongeka pang'ono. Malamba onyamula katundu wa mafakitale amavala kuchokera ku kukangana. PV lamination (150 ° C, EVA contact) ali ndi moyo wapakati. Ntchito zolimbana kwambiri (ma abrasive disc) amakhala ndi moyo waufupi. Mfundo zazikuluzikulu: kuwongolera kutentha (kukhala ≤260 ° C), pewani mikwingwirima yakuthwa, kuyeretsa nthawi zonse, ndikusintha munthawi yake mukakhala matuza kapena achikasu.