PTFE heerkul sare maro dahaaran gaskets isku daraa xoogga dielectric sare (degan hoos qoyaan ka hooseeya), -70 ° C in 260 ° C kala duwan heerkulka, caabbinta kiimikada caalamiga ah (marka laga reebo dhalaalid biraha alkali), dusha aan stick (ka hortagtaa gurguurta), anti- gurguurta (Xoojinta fiberglass vs. PTFE saafi ah), xoog adkaysi sare = 0 - 0 f. qiimeynta. Marka la barbar dhigo mica, caag, iyo gaasaska PTFE saafi ah, marada PTFE waxay bixisaa dabacsanaan sare, hawlkarnimo, iyo xasilloonida cabbirka muddada-dheer. Ku habboon transformers, dahaarka mootada, xidhitaanka flange kiimikaad, iyo qalabka semiconductor.

Fiicnaanta maro PTFE inta lagu guda jiro sintering waxay u baahan tahay xiisad sax ah, heerkulka, iyo xakamaynta xakamaynta. Hababka muhiimka ah: Mashiinka stenter (taarikada biinanka ah waxay ilaalinayaan ballaca, waxay ka hortagaan yaraynta weft), profile heerkulka gradient (kuleyl tartiib tartiib ah → 380-400 ° C qaboojin → qaboojin gaabis ah oo ka hooseeya 310 ° C ka hor inta aan la sii deyn), substrate-ka hore (waxay ka saartaa walbahaarka dharka ka hor daboolka), iyo dhumucda dahaarka lebbiska (waxay ka hortagtaa dhalaalid kala duwan). Xannibaadda steetarka waa in lagu hayaa ilaa ay ka hoos qaboojinayso barta kirismaska ​​PTFE (qiyaastii 310°C) si looga hortago dagaal.

PTFE maro heerkul sare ah ayaa lagu soo saaraa iyada oo loo marayo impregnation-kaliya mid ka mid ah (hal baas: degdeg ah, qiimo jaban, daahan khafiif ah, dusha qallafsan oo leh godad pinholes) ama impregnation multi-dip (2-3+ baasas: siman, cufan, daahan-free-hole-free, PTFE content 50-70%, waxqabadka premium, kharashka sare). Hal-maquufintu waxay ku habboon tahay gaasaska heerka hoose, dermaha ku meel gaadhka ah, iyo alaabta neefsashada. Isku-dubbarid badan ayaa looga baahan yahay xaashida dubista heerka-cunada, suumanka qaade ee aan dhegta lahayn, substrates wareegyada inta badan soo noqnoqda, xadhkaha kiimikaad, iyo xuubabka dhismaha.

PTFE daawaynta maro heerkul sare leh waxay jebisaa firfircoonaanta kiimikada ee isku xidhka/daabacaadda. Afar hab: etching kiimikaad (sodium-naphthalene, tamarta dusha 20→40-50 dyn / cm, lakabka madow ee joogtada ah, qaab-dhismeedka micro-porous), daaweynta plasma (nano-roughening, tallaalka kooxda functional, daaqad firfircoon gaaban), daaweynta corona (filim khafiif ah, suus degdeg ah, qoto dheer oo xadidan), iyo daaweynta laser (micro-qaabaynta saxda ah, carbonization la xakameeyey). Dhammaan hababka jir ahaan way qallafsan yihiin oo kiimiko ahaan waxay soo bandhigaan kooxaha polar (C=O, -OH, -COOH) si ay awood ugu yeeshaan isku xidhka xabagta.

Nadiifinta alaabta ceeriin waa aasaaska aasaasiga ah ee tayada maro heerkul sare leh ee PTFE. Waxyaalaha wasakhda ah (bilowga haraaga ah, surfactants, ions birta, walxaha wasakhaysan) waxay sababaan hoos u dhaca kulaylka (xumo, finan ka sarreeya 260°C), sagxadaha aan sinnayn ee aan dhegta lahayn (dhibcaha ku dheggan), korantada korantada oo hoos u dhacda (luminta korontada, korantada burburka hoose), daciifinta xoogga farsamada (suuq-geynta). Alaabooyinka cayriin ee nadiifka ah ee sarreeya waxay xaqiijinayaan FDA-ku-dhaqanka, cimri-dheer, waxqabadka sare ee PTFE.

PTFE-dahaarka leh muraayadaha fiberglas-ka-soo-baxa waxay u baahan tahay waqti haynta saxda ah 370-400 ° C. Foornooyinka joogtada ah: 30-90s (dhuuban) ilaa 3-5+ daqiiqo (qararan). Foornooyinka Dufcada: 5-15 min. Hoos-u-dhigiddu waxay sababtaa dahaarka aan muuqan, qallafsan ee diirka; xad-dhaafka ah waxay sababtaa jaale, jajaban, iyo sii daynta gaasta fluoride ee sunta ah. Hagaajinta habka: isticmaal raadiyeyaasha heerkulka foornada, samee kormeer muuqaal ah (daah-furnaan, dabacsanaan), oo samee tijaabooyinka jiidista cajaladda. Had iyo jeer hubi isku mid ahaanshaha heerkulka dhumucda buuxda.

Dharka heerkulka sare ee PTFE wuxuu u baahan yahay in si taxadar leh loo maareeyo si loo xaqiijiyo badbaadada iyo cimriga dheer. Taxadarrada muhiimka ah: waligaa ha dhaafin 260°C (ka sarreeya 320°C ayaa sii daaya qiiqa sunta ah), ka fogow dillaacyada fiiqan (daahan dildilaaca, soo bandhiga fiberglass), nadiifin la'aan (dhogor bir ah ayaa waxyeello u geysata dusha aan dhegta lahayn), kaydi nadiifinta kulaylka (waxay ka hortagtaa jeexjeexa), beddel marka ay finan ama diirto. Bakhaarku waa la duubay, oo ka fog UV. Xiro galoofyada kulaylka ka ilaaliya inta aad wax ka qabanayso.

Dharka heerkulka sare ee PTFE ayaa lagama maarmaan u ah warshadaha isku dhafka dharka. Codsiyada muhiimka ah: suumanka gudbinta aan dhamaadka lahayn ee mashiinada fusing joogtada ah (waxay ka hortagtaa dhejinta dhalaalaysa kulul, gudbinta laalaab la'aanta), daboolka aan dhegta lahayn iyo marada suufka ah ee kulaylka fidsan (waxay ka ilaalisaa platens ka wasakhaynta xabagta), suunka gudbinta ee koollada dhibcaha / xadhkaha budada (waxay ilaalisaa xabagta xabagta / dhejinta ee kabaha) inta lagu jiro dhibcooyinka birta ee qalalan. Dhumucdiisuna waxay u dhaxaysaa 0.13mm (suunka khafiifka ah) ilaa 0.55mm (suunka qaadaha culayska leh).

Dharka PTFE-ga ka-hortagga ah waxaa lagu gaaraa laba hab oo waaweyn: dahaarka doping (isku-darka buuxinta dareeraha sida kaarboonka madow ee emulsion PTFE, samaynta shabakad percolation ah oo diiradda saaraya) iyo tolidda substrate (ku dhejinta fiilooyinka korantada ee maro fiberglass ah). Iska caabbinta dusha sare waxaa lagu xakameynayaa 10⁵-10⁹ Ω. Mabda'a: samee dariiq toosan oo miiraya kharashyada taagan isla markaaba, ka hortagaya isu-ururinta khatarta ah. Dhul-dhigiddu waa waajib shaqo wax ku ool ah.

Qallajintu waa tallaabo muhiim ah oo soo saarista dharka heerkulkeedu sarreeyo ee PTFE. Cilladaha caadiga ah waxaa ka mid ah: dildilaaca (qallajinta degdega ah, maqaarka oogada), guuritaanka dahaarka (qaybaha u guuraan dusha sare, curaarta gudaha oo daciif ah), godad/finan (hawo ku xayiran ama uumi), dhibco cad iyo jeexid ( guuritaanka dusha sare ama fiyuuska aan dhamaystirnayn), jaalle/kuleyl (kuleyl dheeri ah oo lagu daro), delamination ( diiqad yaraynaysaa way ka badan tahay adhesion), heerka qallayl ee orange qoyan gudaha (maqaarka dabinnada maqaarka qoyaanka), iyo geesaha qaro weyn (saamaynta kafee-garaanta). Xalku waxay ku lug leeyihiin astaamaha qallajinta la kantaroolo, hawo-siin habboon, iyo ka-hortag ka-hortag substrate ah.