Ichi chinyorwa chinopa zvakanakira PTFE yakakwirira-tembiricha jira seyepamusoro-tembiricha sefa midhiya. Masimba matanhatu akakosha: Yakasarudzika tembiricha kuramba (inoenderera 260 ° C, peak ~ 300 ° C), inodarika PPS (190 ° C) uye aramid (200 ° C); Kunyanyisa kemikari inertness kurwisa acids, alkalis, solvents uye oxidants, hydrolysis-resistant, outperforming aramid uye P84 mune corrosive flue gasi; Superior guruva yekuchenesa kuita ine Ultra-yakaderera pamusoro pesimba inoita kuti nyore guruva kubviswa keke uye yakaramba yakaderera kudonha kudonha; Yakanakisa kusefa kunyatsoshanda nemapore saizi 0.1-3μm inobata pamusoro pe99.99% yePM2.5 zvidimbu; Kusina-kupisa neLOI pamusoro pe95%, ine anti-static sarudzo dziripo; Yakakwira mechanic simba kubva kufiberglass kusimbisa, ine yakachena PTFE fiber midhiya inopa kuchinjika uye > 4 gore rehupenyu hwebasa. Inofananidzwa zvakanaka nePPS, aramid, Nomex, P84 uye fiberglass sefa midhiya pane tembiricha, makemikari kuramba, hydrolysis kuramba uye kuchenesa kuita.

Ichi chinyorwa chinopa nhungamiro yakarongeka pakudzivirira wrinkles paPTFE yakakwirira-tembiricha jira panguva sintering. Makwinya anonyanya kukonzerwa nekusaenzana kwekushisa shrinkage uye kusagadzikana kusagadzikana. Mhinduro dzinovhara kuzara kwebasa: raw material substrate control (yakazara dewaxing / kupisa kuisa kubvisa kushushikana kwemukati); impregnation uye kuomeswa (akawanda akaonda machira, zvinyoro tembiricha gradient, inoshanda drive rollers); sintering furnace control (1-3% overfeed for thermal shrinkage allowance, yakavharwa-loop micro-tension control, transverse tembiricha kufanana mukati me ± 5 ° C, gradient preheating-sintering-kutonhora curve, air-flotation furnaces seyakanyanya mhinduro, curved spreader rollers); kutonhora nekugadzirisa (zvishoma nezvishoma kutonhora kunononoka, chengetedza kupararira kusvika pasi pe100 ° C, kutonhora kuzere kusati kwapera); Kutarisisa pamhepo nekutarisa kwakasimba kwechiedza uye infrared scanning.

Ichi chinyorwa chinoongorora kuti sandblasting kana matt kupedza kurapwa kunokanganisa sei chimiro chepamusoro chePTFE jira rinopisa. Shanduko dzinoitika mumativi matatu: Microscopic morphology inoshanduka kubva pagirazi rakatsetseka-kunge kune rough gully texture ine zvakanyanya kuwedzera Ra/Rz values, kugadzira 3D mechanical anchoring zvimiro zvechinotevera chisungo. Coating kutendeseka kunotarisana nenjodzi: PTFE layer kutetepa, kungangove kuratidzwa kwefiberglass substrate (zvichikonzera kurasikirwa kweiyo isiri-tsvimbo pfuma, hunyoro kupinda, uye kuderedzwa kwesimba remagetsi), pamwe ne microcracks uye marara kugadzirwa.

Chinyorwa ichi chinosuma iyo yakakwana yekutanga maitiro ekupfekedza jira refiberglass nePTFE emulsion. Matanho manomwe akakosha: ① Pretreatment (dewaxing/desizing) pa350-400°C kubvisa machira ekuisa saizi; ② Emulsion formulation ine 40-55% yakasimba yemukati uye ma surfactants ekuvandudza weti; ③ Kuiswa pamuviri kuburikidza nedhip-kusvina nzira kana chiremba blade coating; ④ Kuomesa pa 100-150 ° C kuti zvinyoro zvinyorove mvura uye uite yakaoma PTFE firimu; ⑤ Sintering pa 360-390 ° C (kusvika 400 ° C) kunyungudutsa PTFE zvimedu kuita firimu rinoenderera; ⑥ Multi-cycle impregnation-drying-sintering inodzokororwa 2-4 nguva kusvika kune chinangwa chakakora uye resin content (45-65%); ⑦ Kurapwa mushure mekurapa kunosanganisira kurapwa kwekorona, kuchekerera kwemupendero, kumonereka uye kuongororwa kwemhando. Core control point: dewaxing yakazara, yakazara emulsion wetting, zvishoma nezvishoma kuomeswa, chaiyo sintering tembiricha, uye inowirirana coating density. Zvigadzirwa zvinoshandisa high-frequency copper-clad laminates, high-temperature conveyor mabhandi uye architectural membrane zvinhu.

Ichi chinyorwa chinozivisa organic solvents iyo PTFE yakakwirira-tembiricha jira inogona kumira. PTFE-yakavharidzirwa fiberglass jira rinoratidza kusaenzana kwekemikari inertness, ichipikisa zvinenge zvese zvakajairika organic zvinonyungudutsa pasi pemamiriro ekushanda akajairwa pasina kuparara, kuzvimba kana kemikari kuita. Zvikamu zvinoshivirika zvinosanganisira: doro (methanol, ethanol, isopropanol), ketoni (acetone, MEK, cyclohexanone), esters (ethyl acetate, butyl acetate), hydrocarbons (peturu, toluene, xylene, hexane), halogenated hydrocarbons (dichloromethylene), carbon dioxide, tether. THF), organic acids (glacial acetic acid, formic acid), amines uye amides (triethylamine, DMF), phenols, uye zvimwe zvakaita secarbon disulfide, pyridine, silicone mafuta uye brake fluid.

Ichi chinyorwa chinobata kutonhora chiyero zvinodiwa panguva yePTFE yakakwirira-tembiricha jira sintering. Mushure mekupisa pa 380-400 ° C, jira rinofanira kukurumidza kupfuura nepakati pe 310-315 ° C crystallization-sensitive zone. Inokurudzirwa kutonhora chiyero ingangoita 30-50 ° C / min (jira rakatetepa rinogona kuwana 100-200 ° C / min kuburikidza nemhepo kutonhora). Kukurumidza kutonhora (kudzima) kunogadzira yakaderera crystallinity (45-50%), ichiburitsa yakapfava, yakaoma machira ane nzvimbo yakatsetseka, kunamatira kwakasimba, kuita kwakanakisa kusiri tsvimbo, uye kuramba delamination uye kuputika. Kunonoka kutonhora (kutonhora kwechoto) kunoguma nehupamhi hwekristaro (60-70%), zvichikonzera kuomarara, brittle coatings inowanzoita shrinkage, peeling uye microcracks.

Mucheka wepamusoro wePTFE wepamusoro-tembiricha unogadzirwa nekuputira PTFE pane yakakwirira-simba refiberglass jira, rinopa simba rakasimba, kusapisa kupisa, kusanamatira zvivakwa, makemikari kuramba, uye kuderera kwakaderera. Zvishandiso zvakakosha zvinosanganisira: kufambiswa kweindasitiri (kupisa kupisa kudikitira, kubika chikafu, machira ekuomesa, mapepa/kuomesa firimu); composite molding kuburitsa jira uye inopisa yekutsikisa cushion liners; welding ekudzivirira maketeni uye thermal insulation jackets; motokari yemagetsi uye transformer insulation; kuvaka mabhengi ekutsvedza uye zvitsigiro zvepombi; kemikari kusefa uye kuvhara vharafu munzvimbo dzinoora. Yakakwira tensile simba inovimbisa kusimba pasi pekunetsekana, kubvaruka, kudzokororwa kuchinjika, uye yakakwirira-tembiricha yemagetsi kushushikana mukati meaya akasiyana anorema-basa maapplication.

Panguva yekunyunguduka, PTFE zvimedu pajira refiberglass zvinonyunguduka pamusoro pe327°C, zvichiparadza cheni yakapetwa-cheni lamellae uye miganhu kuti iite amorphous kunyungudika. Pakutonhora, PTFE inodzokorora kuita spherulites inoumbwa neradially oriented lamellae, ine crystallinity inotangira 50-70%. Chiyero chekutonhora chinogadzirisa kukwana kwekristaro: kunonoka kutonhora kunopa crystallinity yakakwirira, spherulites yakakura, kuoma kukuru; kukurumidza kudzima kunopa yakanakisa spherulites uye yakagadziridzwa kuchinjika.

Ichi chipfupi chehunyanzvi kubva kuJiangsu Aokai chinoongorora kuti tembiricha yakadzikira zvakanyanya kana yakakwira sintering inokuvadza sei PTFE jira rekushisa. Low sintering inosiya zvimedu zvisina kunyungudutswa, zvichikonzera micro-pores, isina kusimba coating-substrate bonding, hutsinye hwepamusoro, husina simba hwemagetsi, uye kutaridzika kwemukaka. Kupisa kwakanyanya kunokonzeresa PTFE kushatisa kwemafuta, kuburitsa mapinhole, mabubbles, brittleness, yero-kune-dema discoloration, uye kuburitsa muchetura utsi. Zvese zviri zviviri zvakanyanyisa zvinoparadza compactness, kwete-tsvimbo kuita, kuchinjika, insulation, uye dimensional kugadzikana.

PTFE high-temperature jira insulating gaskets inobatanidza simba guru re dielectric (yakagadzikana pasi pehunyoro), -70 ° C kusvika 260 ° C tembiricha yakasiyana, universal chemical resistance (kunze kwesimbi alkali yakanyungudutswa), kwete-stick surface (inodzivirira creepage), anti-creep (fiberglass reinforcement vs. friction μ-501), high ten μ-50. V-0 murazvo chiyero. Kuenzaniswa ne mica, rabha, uye yakachena PTFE gaskets, PTFE jira rinopa kuchinjika kwepamusoro, kurongeka, uye kwenguva refu dimensional kugadzikana. Yakanakira ma transformer, mota insulation, kemikari flange yekuisa chisimbiso, uye semiconductor midziyo.