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.

Litheko tsa emulsion tsa PTFE li susumetsoa ke lintlha ho pholletsa le ketane eohle ea indasteri. Litšenyehelo tse nyolohelang holimo (meepo ea fluorite, li-quotas tsa sehatsetsing tsa R22) li beha motheo oa theko. Tlhokahalo e tlase e tsoang ho li-binder tsa lithium betri ke eona mokhanni oa kholo ea kholo. Lintlha tsa phepelo (litekanyetso tsa ts'ebetso ea indasteri, tlhokomelo ea limela) le boleng ba sehlahisoa (litaba tse tiileng, boholo ba likaroloana, boemo ba bohloeki) li theha maemo a theko. Melao ea tikoloho (lithibelo tsa PFOA/PFAS) e phahamisa litšenyehelo tsa ho latela melao. Logistics (lipalangoang tse batang) li eketsa litšenyehelo tse kholo. Mekhoa ea theko e latela mohopolo oa mantlha: litšenyehelo tsa fluorite/hydrofluoric acid = fatše; tlhokahalo ea betri e ncha ea matla = tataiso ea mokhoa; litekanyetso tsa ts'ebetso le maano = lintho tse bakang ho hloka botsitso ha nakoana.

Theipi ea PTFE bakeng sa phala ea lik'hemik'hale / sejana se thibelang ho bola, ho se thupeng, le ts'ireletso e tiisang e hloka karoloana e ts'oanang, tsamaiso ea likhomaretsi le mecha ea litaba ea lik'hemik'hale. Silicone PSA e khothalletsoa 200-260 ° C ka li-acids / alkalis; acrylic PSA e hanela metsoako ea lintho tse hlapollang empa e fokotsa mocheso ho ≤150°C. Bakeng sa HF, ho belisa >80% alkali, kapa chlorine trifluoride, sebelisa lesela la PTFE-feela (ha ho sekhomaretsi sa organic). Bohlokoa: sekhomaretsi ke sehokelo se fokolang, eseng PTFE ka boeona.

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.

Matla a ho ts'oara tepi ea PTFE a ntlafatsoa ka ho roala le ho ntlafatsa ts'ebetso ea ho phekola. Coating: primer layer (0.5-2μm silane primer thibela sekhomaretsi peeling), sekhomaretsi botenya 30-60μm (optimal bakeng sa ho tšoara matla), vacuum defoaming, le 5-10μm filtration. Ho folisa: ho futhumatsa ka mohato (80-100 ° C ho tlosoa ha solvent → 120-140 ° C shape → 150-220 ° C deep crosslinking), post-curing (40-60 ° C bakeng sa 24-48h ho phomola khatello ea kelello), le phetisetso e tlaase ho thibela khatello ea kelello ea ka hare ho substrate shrinkage. The primer ke ea bohlokoa bakeng sa matla a tlase a holim'a PTFE.

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.