Sengoliloeng sena se akaretsa litlhoko tsa sekhahla sa ho pholisa nakong ea PTFE ea mocheso o phahameng oa mocheso oa lesela. Kamora ho chesa ka 380-400 ° C, lesela le tlameha ho feta ka potlako sebakeng sa 310-315 ° C sa crystallization-sensitive zone. Sekhahla sa ho pholisa se khothalelitsoeng ke bonyane 30-50 ° C / min (lesela le lesesaane le ka fihlela 100-200 ° C / min ka moea o pholileng). Ho pholile ka potlako (ho tima) ho hlahisa crystallinity e tlaase (45-50%), ho fana ka liphahlo tse bonolo, tse thata tse nang le libaka tse boreleli, ho khomarela ka matla, ts'ebetso e babatsehang e sa tsitsang, le ho hanyetsa delamination le ho phunyeha. Ho pholile butle (ho pholile ha sebōpi) ho fella ka crystallinity e phahameng (60-70%), e bakang liaparo tse thata, tse brittle tse atisang ho fokotseha, ho peeling le microcracks.

Lesela le nang le mocheso o phahameng oa PTFE le entsoe ka ho roala PTFE holim'a lesela la fiberglass e matla haholo, le fanang ka matla a tsitsitseng, ho hanyetsa mocheso, thepa e sa tsitsang, lik'hemik'hale tse hanyetsanang le ho khohlakana ho fokolang. Lisebelisoa tsa bohlokoa li kenyelletsa: ho tsamaisa liindasteri (ho paka ho fokotsa mocheso, ho baka lijo, li omisa masela, ho omisa pampiri / lifilimi); lesela la ho lokolla le entsoeng ka motsoako le li-cushion liner tse chesang; tjheseletsa likharetene tse sireletsang le libaki tsa ho futhumatsa mocheso; motlakase oa motlakase le motlakase oa motlakase; ho haha ​​li-bearings tse thellang le litšehetso tsa lipeipi; ho sefa lik'hemik'hale le ho koala li-valve libakeng tse senyang. Matla a matla a phahameng a tiisa ho tšoarella tlas'a tsitsipano, ho taboha, ho feto-fetoha khafetsa, le khatello ea mocheso e phahameng ea mocheso ho pholletsa le mefuta ena e fapaneng ea mesebetsi e boima.

Nakong ea sintering, likaroloana tsa PTFE holim'a lesela la fiberglass e qhibiliha ka holimo ho 327 ° C, e senya lamellae ea pele e phuthoang le likaroloana ho etsa ho qhibiliha ha amorphous. Ka mor'a ho pholile, PTFE e tsosolosa li-spherulites tse entsoeng ka lamellae e nang le mahlaseli a maholo, a nang le crystallinity ho tloha 50-70%. Sekhahla sa ho pholisa se etsa qeto ea phetheho ea kristale: ho pholisa butle ho fana ka kristale e phahameng, li-spherulite tse kholoanyane, boima bo boholo; ho tima ka potlako ho fana ka li-spherulite tse ntle le ho feto-fetoha ha maemo.

Kakaretso ena ea tekheniki e tsoang ho Jiangsu Aokai e sekaseka kamoo mocheso o tlase haholo kapa o phahameng oa sintering o senyang lesela la mocheso o phahameng oa PTFE. Mahlaseli a tlaase a sintering a sa qhibilihe, 'me a baka li-micro-pores, li-coat-substrate bonding tse fokolang, libaka tse makukuno, matla a fokolang a mochine, le ponahalo ea milky opaque. Ho futhumala ho feteletseng ho baka PTFE ho senyeha ha mocheso, ho hlahisa masoba, lipululana, brittleness, mosehla ho ea ho o motšo, le ho ntša mosi o chefo. Bobeli bo feteletseng bo senya tšubuhlellano, ts'ebetso e se nang thupa, ho tenyetseha, ho kenya letsoho, le botsitso ba sebopeho.

PTFE high-themperature cloth insulating gaskets kopanya matla a dielectric a phahameng (a tsitsitse tlas'a mongobo), -70 ° C ho 260 ° C mocheso oa mocheso, lik'hemik'hale tsa bokahohleng (ntle le tšepe ea alkali e qhibilihisitsoeng), holim'a metsi a sa tsitsang (thibela creepage), anti-creep (fiberglass reinforcement vs. friction e tlaase μ5, 0 0.0 . 0.0 . . . . . Tekanyo ea mollo ea V-0. Ha ho bapisoa le mica, rabara, le li-gaskets tse hloekileng tsa PTFE, lesela la PTFE le fana ka maemo a holimo, a sebetsang hantle, le botsitso ba nako e telele. E loketse li-transformer, insulation motor, ho tiisa flange ea lik'hemik'hale, le lisebelisoa tsa semiconductor.

PTFE lesela flatness nakong sintering hloka e nepahetseng tsitsipano, mocheso, le taolo ya thibelo. Mekhoa ea mantlha: mochini oa stenter (lipoleiti tsa pin li boloka bophara, li thibela ho fokotseha ha weft), profil ea mocheso oa gradient (ho futhumala butle → 380-400 ° C tšoara → ho pholile butle ka tlase ho 310 ° C pele ho lokolla tsitsipano), substrate e senyehileng pele (e tlosa khatello ea ho loha pele e roaloa), le botenya ba ho roala junifomo (ho thibela ho qhibiliha ho fapaneng). Thibelo e tsitsitseng e tlameha ho bolokoa ho fihlela ho pholile ka tlase ho ntlha ea crystallization ea PTFE (hoo e ka bang 310 ° C) ho thibela ntoa.

Ho apara ho tšoana nakong ea PTFE emulsion impregnation ea lesela la fiberglass ke mokhoa oa bophelo oa boleng ba sehlahisoa. Lisosa tse sa tšoaneng tsa ho roala: ho hlōleha ha lithupa (ho khomarela libakeng tse tšesaane), bofokoli ba mochine (khatello ea maikutlo, ho taboha), ho se tsitse ha motlakase (ho theoha ha motlakase ho ea ho 1/10), ho kenella ka lik'hemik'hale (pinhole corrosion), litaba tsa dimensional (warpage), le liphoso tsa ho sebetsa (ho lelera ka lebanta, ho fetoha ha botenya). Ho roala ka mokhoa o ts'oanang ho hloka taolo e nepahetseng ea emulsion viscosity, dikahare tse tiileng, tsitsipano ea lesela, likheo tse petetsang, le li-profiles tse ngata tsa ho omisa / tsa sintering.

PTFE lesela la mocheso o phahameng oa mocheso le fetoha mekhahlelo e mene ea phetoho ea mohaho ha mocheso o ntse o phahama: ka tlase ho 260 ° C - butle-butle ho phunyeha ha micro-cracking le ho salla ho eketsa matla; ka 327 ° C (sebaka sa ho qhibiliha) - phetoho ea crystalline-to-amorphous, ho roala ho kokobetsa, ho senya ho tloha fiberglass; 400-500 ° C - PTFE depolymerizes (e lokolla likhase tse chefo), ho roala hoa nyamela; ka holimo ho 500 ° C - fiberglass e nolofatsa (840 ° C e nolofatsa ntlha) mme e lahleheloa ke botšepehi ba sebopeho. Lula ka tlase ho 260°C kamehla, qoba >300°C tlhoro bakeng sa ts'ebetso e sireletsehileng.

Lesela la mocheso o phahameng oa PTFE le hlahisoa ka ho kenngoa ha lesela le le leng (phase e le 'ngoe: ho potlaka, ho theko e tlaase, ho roala hamonate, holim'a metsi a nang le likoti) kapa ho kenngoa ha metsi a mangata (2-3+ e feta: e boreleli, e teteaneng, e se nang pinhole, PTFE content 50-70%, premium performance, theko e phahameng). Single-dip e lumellana le li-gaskets tsa boemo bo tlase, limmete tsa nakoana, le lisebelisoa tse phefumolohang. Li-multi-dip li hlokahala bakeng sa maqephe a ho baka a boemo ba lijo, mabanta a conveyor a sa thupeng, li-circuits tsa maqhubu a phahameng, li-liner tsa lik'hemik'hale, le li-membrane tsa meralo.

Phekolo ea lesela la mocheso o phahameng oa PTFE e senya ho se sebetse ha lik'hemik'hale bakeng sa bonding/printing. Mekhoa e mene: etching ea lik'hemik'hale (sodium-naphthalene, matla a holim'a 20→ 40-50 dyn / cm, lera le lefifi le sa feleng, sebopeho sa micro-porous), phekolo ea plasma (nano-roughening, grafting ea sehlopha se sebetsang, fensetere e khutšoanyane e sebetsang), phekolo ea corona (filimi e nyenyane, ho senyeha ka potlako, botebo bo fokolang), le phekolo ea laser (ho nepahala ha micro-patterning, ho laoloa ke carbonization). Mekhoa eohle ea 'mele e hlabang le ho hlahisa lihlopha tsa polar ka lik'hemik'hale (C=O, -OH, -COOH) ho etsa hore ho khonehe ho kopanya.