Farsamadan kooban ee ka socota Jiangsu Aokai waxay falanqaynaysaa sida xad-dhaafka ah ee hooseeya ama heerkulka sintering sare ay u waxyeeleeyaan PTFE maro heerkul sare ah. Diidmada hoose waxay ka tagtaa qaybo aan dhalaalin, taasoo keenta daldalool yar, isku xidhka substrate-ka daahan daciifka ah, sagxadaha qallafsan, xoog makaanik liidata, iyo muuqaal muuqaal caano ah. Kulaylku wuxuu keenaa hoos u dhaca kulaylka ee PTFE, abuurista godad godad leh, goobooyin, jajabnaan, midab huruud ilaa madow, iyo sii daynta qiiqa sunta ah. Labada darafba waxay burburiyaan isafgaradka, waxqabadka aan dhegta lahayn, dabacsanaanta, dahaarka, iyo xasilloonida cabbirka.

PTFE heerkul sare maro insulating 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 non-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.

Qiimaynta emulsion PTFE waxaa saameeya qodobbada silsiladda warshadaha oo dhan. Qiimaha korka (macdanta fluorite, kootada qaboojiyaha R22) waxay dejiyaan sagxada qiimaha saldhiga. Baahida hoose ee batteriga lithium-ku xidhayaasha ayaa ah darawalka kobaca aasaasiga ah. Qodobbada sahayda (heerka hawlgalka warshadaha, dayactirka dhirta) iyo tayada alaabta (waxyaabaha adag, cabbirka walxaha, darajada daahirsanaanta) waxay abuuraan heerar qiimo. Xeerarka deegaanka (xakamaynta PFOA/PFAS) waxay kor u qaadaan kharashaadka u hoggaansanaanta. Saadka (gaadiidka silsilad-qabow) waxay ku kordhinaysaa kharash aad u badan. Isbeddellada qiimaha ayaa raacaya macquulka asaasiga ah: Qiimaha fluorite/hydrofluoric acid = dabaqa; Dalabka tamarta cusub = jihada isbeddelka; Heerarka hawlgalka iyo siyaasadaha = isbeddellada muddada-gaaban.

Cajaladda PTFE ee tuubada kiimikada ka hortagga daxalka, aan dhegta lahayn, iyo ilaalinta xidhidhku waxay u baahan tahay isbarbardhig, habka koollada, iyo warbaahinta kiimikada. Silikoon PSA waxaa lagula talinayaa 200-260 ° C oo leh asiidh / alkalis; acrylic PSA waxay u adkaysataa dareerayaasha organic laakiin waxay xaddidaysaa heerkulka ilaa ≤150°C. HF, karkarinta> 80% alkali, ama koloriin trifluoride, isticmaal dahaarka PTFE-kaliya (aan lahayn koollada organic). Halis: koollada waa isku xirka ugu daciifsan, maaha PTFE lafteeda.

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 diiqada dharka ka hor daahan), 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.

Isku-duubnida dahaarka inta lagu jiro impregnation emulsion PTFE ee marada fiberglass waa khadka nolosha ee tayada badeecada. Daahan aan sinnayn ayaa sababa: guuldarada aan dhegta lahayn (ku dheggan dhibco dhuuban), daciifnimo farsamo (fiiri culayska, jeexjeexa), xasiloonidarada korantada (korontadu waxay hoos u dhacdaa 1/10), dhexgalka kiimikaad (daxalka pinhole), arrimaha cabbirka (warpage), iyo cilladaha farsamaynta (wareejinta suunka, kala duwanaanta dhumucda). Daahan labbiska ah wuxuu u baahan yahay kontoroolka saxda ah ee viscosity emulsion, nuxurka adag, xiisadda dharka, tuujin daldaloolada, iyo astaanta qalajinta/qallajinta aaga badan.

Cajaladda PTFE ee awoodda haynta ayaa lagu wanaajiyey iyada oo loo marayo daahan iyo hagaajinta habka daaweynta. Dahaarka: lakabka asaasiga ah (0.5-2μm silane primer waxay ka hortagtaa diirinta xabagta), dhumucda xabagta 30-60μm (ugu fiican ee awoodda xajinta), vacuum defoaming, iyo 5-10μm sifeynta. Daawaynta: kuleyl si tartiib ah u socota (80-100 ° C saarista dareeraha → 120-140 ° C qaabeynta → 150-220 ° C qoto dheer oo iskutallaab ah), daawaynta ka dib (40-60 ° C ee 24-48h si loo nasto diiqada), iyo gudbinta kacsanaanta hoose si looga hortago walaaca gudaha ee hoos u dhaca substrate-ka. Furaha ayaa lama huraan u ah tamarta dusha hoose ee PTFE.

PTFE maro heerkul sare ah waxay maraysaa afar marxaladood oo isbeddel qaabdhismeed ah marka heerkulku kor u kaco: ka hooseeya 260 ° C - yar-dillaac gaabis ah iyo isbeddel wax lagu daro oo hadh ah; at 327 ° C (dhibcaha dhalaalay) - kala-guurka crystalline-to-amorphous, daahan ayaa jilicsan, delaminates ka fiberglass; 400-500 ° C - PTFE depolymerizes (waxay sii deysaa gaasaska sunta ah), daboolka ayaa lumaya; ka sarreeya 500°C – fiberglass-ku wuu jilciyaa (840°C barta jilicsan) oo luminaysa sharafta qaabdhismeedka. Joog heerkulkiisu hooseeyo 260°C si joogto ah, iska ilaali>300°C meelaha ugu saraysa ee qalliin badbaado leh.

PTFE maro heerkul sare ah ayaa la 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 gudbinta 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, grafting 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.