Nyati sia to gɔmedzenu blibo si wozãna tsɔ dea fiberglass avɔ me kple PTFE emulsion. Afɔɖeɖe vevi adre: 1 Dɔwɔwɔ do ŋgɔ (dewaxing/desizing) le dzoxɔxɔ 350-400°C me be woaɖe avɔ ƒe lolomedzidzenuwo ɖa; 2 Emulsion ƒe wɔwɔme si me nu sesẽ 40-55% le kple nusiwo wɔa dɔ ɖe anyigba dzi hena tsidzadza si nyo wu; 3 Impregnation to dip-squeeze mɔnu alo ɖɔkta blade coating dzi; 4 Etutu le dzoxɔxɔ 100-150°C me be tsi naƒu blewu eye wòawɔ PTFE film ƒuƒu; 5 Sintering le 360-390°C (vaseɖe 400°C) be woatsɔ alɔ PTFE ƒe akpa suewo woazu film si metso o; 6 Multi-cycle impregnation-drying-sintering gbugbɔ zi 2-4 be woaɖo taɖodzinu ƒe titrime kple resin ƒe agbɔsɔsɔ (45-65%); 7 Atikewɔwɔ megbe si me corona dada, nugbɔ ɖeɖe, winding kple nyonyome me dzodzro hã le. Nu vevi siwo dzi wokpɔna: dewaxing bliboe, emulsion tsidede blibo, vivivi ƒuƒu, sintering dzoxɔxɔ si sɔ pɛpɛpɛ, kple coating density si mewɔa tɔtrɔ o. Adzɔnuwo subɔa akɔbli-siwo wotsɔ blaa laminate siwo ƒe ɣeyiɣi deŋgɔ, dzoxɔxɔ gã ƒe mɔ̃ siwo wotsɔna tsɔa nu kple xɔtuɖaŋu ƒe lãkusi ƒe nuzazãwo.

Nyati sia ɖe lãmenugbagbeviwo ƒe atike siwo PTFE avɔ si ƒe dzoxɔxɔ lolo ate ŋu anɔ te ɖe enu la fia. PTFE-fa fiberglass avɔ ɖea atike ƒe dɔmawɔmawɔ etɔxɛ fiana, tsi tre ɖe lãmenugbagbeviwo ƒe ʋeʋẽ siwo bɔ katã kloe ŋu le dɔwɔwɔ ƒe nɔnɔme siwo sɔ me evɔ meʋãna, vuvu alo atikewo ƒe dɔwɔwɔ o. Ƒomedodo siwo dzi woate ŋu alɔ̃ ɖo dometɔ aɖewoe nye: aha sesẽwo (methanol, ethanol, isopropanol), ketones (acetone, MEK, cyclohexanone), esters (ethyl acetate, butyl acetate), haidrodzin (mɔ̃memi, toluene, xylene, hexane), haidrokarbon siwo me halogen le (dichloromethane, chloroform, carbon tetrachloride), ethers (diethyl ether, THF), lãmenugbagbeviwo ƒe aɖi (glacial acetic acid, formic acid), amines kple amides (triethylamine, DMF), phenols, kple bubuwo abe carbon disulfide, pyridine, silicone ami kple brek ƒe tsi ene.

Nyati sia ƒo nu tso fafa ƒe agbɔsɔsɔme si hiã le PTFE ƒe avɔ si me dzoxɔxɔ le ŋutɔ ƒe ƒoƒo me ŋu. Ne wotsɔ avɔa ƒoe le dzoxɔxɔ 380-400°C me vɔ la, ele be wòato nuto si me kristalo ƒe dzoxɔxɔ le 310-315°C me kabakaba. Fafa ƒe agbɔsɔsɔme si wokafu enye 30-50°C/min ya teti (avɔ tsɛ ate ŋu aɖo 100-200°C/min to ya fafɛ me). Fafa kabakaba (tsitretsitsi) naa kristalo me mekɔna o (45-50%), si naa nusiwo wotsɔ blaa nu falɛfalɛ siwo sesẽ eye woƒe anyigba le gbadzaa, woléna ɖe wo nɔewo ŋu sesĩe, wowɔa dɔ nyuie si me meléna o, eye wotsia tre ɖe delamination kple gbagbã ŋu. Fafa blewu (dzodoƒe ƒe fafa) nana kristalo ƒe ʋeʋẽ lilili (60-70%), si wɔnɛ be nusiwo wotsɔ blaa nu sesẽ, siwo megbãna o, siwo te ŋu tsia, ʋuʋuna eye wogbãna suesuesuewo.

Wowɔa avɔ si ƒe dzoxɔxɔ lolo PTFE si te ŋu léa nu geɖe to PTFE tsyɔtsyɔ ɖe fiberglass avɔ si ŋu ŋusẽ le ŋutɔ dzi, si naa ŋusẽ si te ŋu léa nu, dzoxɔxɔ si te ŋu nɔa te ɖe enu, nɔnɔme siwo me meléna o, atikewo ƒe tsitretsitsi, kple ʋuʋudedi si mebɔ o. Dɔ vevi siwo wozãna dometɔ aɖewoe nye: dɔwɔƒewo ƒe tsɔtsɔ yi teƒe bubuwo (dzoxɔxɔ ƒe nubablɛwo, nuɖuɖu ɖaɖa, avɔlɔ̃mɔ̃wo, pepa/film ƒuƒu); composite molding release avɔ kple dzodzoe nyadzɔdzɔŋlɔla cushion liners; xɔmetsovɔ siwo kpɔa ame ta kple dzoxɔxɔnutsitikewo tsɔtsɔ ƒo ƒui; elektrikmɔ̃ kple transformer ƒe nusiwo xea mɔ na dzoxɔxɔ; bearing siwo wotsɔna ƒua du kple pɔmpiwo ƒe kpeɖeŋutɔ tutu; atikewo ɖeɖeɖa kple valvɔ nutrenu le nuto siwo me nu gblẽna le me. Tensile ŋusẽ gã nana be enɔa anyi didina le tete, vuvu, ƒoƒo enuenu, kple dzoxɔxɔ gã mɔ̃ ƒe nuteɖeamedzi le dɔ sesẽ vovovo siawo me.

Le sintering me la, PTFE ƒe akpa siwo le fiberglass avɔ dzi la ƒuna wu 327°C, eye wogblẽa kɔsɔkɔsɔ siwo woxatsa gbãtɔ ƒe lamellae kple nusuewo ƒe liƒowo tsɔ wɔa amorphous melt. Ne PTFE fa la, egatrɔna zua spherulites siwo me lamellae siwo le radially oriented le, kple kristalo ƒe 50–70%. Fafa ƒe agbɔsɔsɔme ye afia kristalo ƒe blibodede: fafa blewu naa kristalo ƒe nɔnɔme si lolo wu, spherulites lolo wu, sesẽme geɖe wu; ne wotsi kabakaba la, enaa spherulites nyo wu eye wòte ŋu trɔna ɖe nɔnɔmewo ŋu nyuie wu.

Mɔ̃ɖaŋu ŋuti nyatakaka kpui sia si tso Jiangsu Aokai gbɔ ku alesi dzoxɔxɔ si bɔbɔ akpa alo esi lolo akpa le sintering me gblẽa nu le PTFE avɔ si ƒe dzoxɔxɔ lolo ŋu. Sintering si mebɔ o gblẽa nusueawo ɖi womeƒuna o, si wɔnɛ be micro-pores, coating-substrate ƒe kadodo si gbɔdzɔ, anyigba siwo le gbadzaa, mɔ̃a ƒe ŋusẽ medea ŋgɔ o, kple notsi ƒe dzedzeme si me mekɔ o. Dzoxɔxɔ si gbɔ eme nana PTFE ƒe dzoxɔxɔ gblẽna, si wɔnɛ be pinholes, bubbles, brittleness, ɣie va zu yibɔ ƒe amadede trɔna, eye wòɖea dzudzɔ si me aɖi le dona. Nusiwo gbɔ eme evea siaa gblẽa compactness, non-stick dɔwɔwɔ, asitɔtrɔ le nɔnɔmewo ŋu, nusiwo xea mɔ na dzoxɔxɔ, kple didime ƒe liƒo.

PTFE dzoxɔxɔ gã avɔ si xea mɔ na gaskets ƒoa dielectric ŋusẽ gã (si li ke le fafa te), -70 ° C va ɖo 260 ° C dzoxɔxɔ dometsotso, xexeame katã ƒe atikewo ƒe tsitretsitsi (negbe alkali ga siwo wotsɔ ƒo ƒu), non-stick surface (xea mɔ na creepage), anti-creep (fiberglass ŋusẽdodo vs. dzadzɛ PTFE), tensile ŋusẽ gã, low friction (μ=0.05-0.1), kple V-0 dzobibi ƒe dzeside. Ne wotsɔe sɔ kple mica, rababa, kple PTFE gasket dzadzɛwo la, PTFE avɔ naa woate ŋu atrɔ ɖe nɔnɔmewo ŋu nyuie wu, woate ŋu awɔ dɔ tso eŋu, eye wòte ŋu nɔa te ɖe didime nu ɣeyiɣi didi. Enyo ŋutɔ na transformers, motor insulation, atike flange nutrenu, kple semiconductor dɔwɔnuwo.

PTFE avɔ ƒe gbadzaƒe le sintering me bia be woakpɔ tete, dzoxɔxɔ, kple mɔxexeɖenu dzi pɛpɛpɛ. Mɔnu veviwo: stenter mɔ̃ (pin plates léa kekeme ɖe te, xea mɔ na weft ƒe shrinkage), gradient temperature profile (dzoxɔxɔ blewu → 380-400°C hold → blewu fafa le 310°C te hafi ɖea asi le tension), pre-shrunk substrate (ɖea weaving stress hafi coating), kple uniform coating thickness (xea mɔ na differential melting). Ele be woalé stenter ƒe mɔxexe ɖe enu me ɖe asi vaseɖe esime wòafa le PTFE ƒe kristalo ƒe teƒe (anɔ abe 310°C ene) te be woaxe mɔ ɖe aʋawɔwɔ nu.

Coating ɖekawɔwɔ le PTFE emulsion impregnation le fiberglass avɔ nye agbemɔ na adzɔnu ƒe nyonyome. Nusiwo wotsɔ blaa nu si mesɔ o hea: nusiwo meléna ɖe nu ŋu o (eléna ɖe teƒe tsɛwo), mɔ̃wo ƒe gbɔdzɔgbɔdzɔ (nuteɖeamedzi ƒe agbɔsɔsɔ, vuvu), elektrikŋusẽ ƒe malikenyenye (ʋuʋudedi ƒe ʋuʋudedi ɖiɖina va ɖoa 1/10), atikewo ƒe gege ɖe eme (pinhole ƒe xɔxlɔ̃), didime ƒe nyawo (warpage), kple dɔwɔwɔ ƒe gbɔdzɔgbɔdzɔ (belt wandering, thickness variation). Nu ɖekawɔwɔ ƒe nutsyɔtsyɔ bia be woakpɔ emulsion ƒe ʋeʋẽ, nu sesẽ siwo le eme, avɔ ƒe tete, squeeze gaps, kple multi-zone drying/sintering profiles dzi pɛpɛpɛ.

PTFE avɔ si ƒe dzoxɔxɔ lolo la toa xɔtuɖoɖo ƒe tɔtrɔ ƒe akpa ene me ne dzoxɔxɔ le dzi yim: le 260°C te – micro-cracking blewu kple residual additive volatilization; le 327°C (melting point) – kristalo-to-amorphous ƒe tɔtrɔ, nusi wotsɔ blae la fa, eɖea ɖa tso fiberglass me; 400-500°C – PTFE ɖea polymerize ɖa (eɖea aɖi ya ɖa), nusi wotsɔ blae la nu yina; wu 500°C – fiberglass fa (840°C fafɛƒe) eye wòbua xɔtuɖoɖo ƒe blibonyenye. Nɔ 260°C te ɖaa, ƒo asa na >300°C ƒe taƒoƒo hena dɔwɔwɔ dedie.