Dis atikul introduks di komplit besik proses fɔ impregnate fayv glas fabrik wit PTFE emulshɔn. Sεvin ki step dεm: 1 Prεtritmεnt (dewaxing/desizing) na 350-400°C fכ pul di tεkstayl sayzin ejen dεm; 2 Emulshכn fכmyuleshכn wit 40-55% sכlid kכntεnt εn sכfaynt fכ impruv wet; 3 Impregnation via dip-squeeze mεtכd כ dכkta bled kכt; 4 Dray na 100-150°C fɔ mek wata jɔs evapɔret ɛn fɔm dray PTFE film; 5 Sintering na 360-390°C (up to 400°C) fכ mεlt PTFE patikyula dεm insay kכntinyu film; 6 mכlti-saykl impregnashכn-drying-sintering ripit 2-4 tεm fכ rich tכgεt tiknes εn rεsin kכntεnt (45-65%); 7 Pɔst-tritmɛnt inklud korona tritmɛnt, ed trim, waynd ɛn kwaliti inspekshɔn. Kor kontrכl poynt: komplit diwaks, ful emulshכn wet, sכmtεm drεy, prεsis sintering tεmprachכ, εn kכnsistεnt kכt dεnsiti. Prodakt dɛn de sav ay-frikyuɛnsi kɔpa-kled laminat, ay-tɛmpracha kɔnvayɔr bɛlt ɛn akitekchral mɛmbran matirial dɛn.

Dis atikul de introduks di ɔrganik sɔlvɛnt dɛn we PTFE ay-tɛmpracha klos kin bia. PTFE-coated fiberglass fabric de sho eksepshɔnal kemikal inɛtnɛs, we de rɛsist klos to ɔl di kɔmɔn ɔrganik sɔlvɛnt dɛn ɔnda nɔmal wok kɔndishɔn we nɔ gɛt disɔlshɔn, swel ɔ kemikal riakshɔn. Di kategori dɛm we dɛn kin tolɛret na: alkol (mɛtanɔl, ɛtɛnol, aysɔpropanol), ketɔn (asetɔn, MEK, sayklɔhɛksanɔn), ɛsta (ɛtil asɛtat, butil asɛtat), haydrokabɔn (gasolin, toluɛn, zylin, hɛksan), halojenɛt haydrokabɔn (diklɔromitan, klorofɔm, kabɔn tɛtraklɔrayd), ɛtɛr (dayɛtyl εta, THF), כrganik asid (gleshial aset asid, fכmik asid), amin εn amid (triethylamine, DMF), fεnol, εn כda wan dεm lεk kabכn disulfayd, piridin, silikon כyl εn brek fכluid.

Dis atikul de kɔba di kɔling rit rikwaymɛnt dɛn we dɛn de sinta PTFE ay-tɛmpracha klos. Afta we dɛn dɔn sinta na 380-400°C, di klos fɔ pas kwik kwik wan tru di 310-315°C kristalizashɔn-sɛnsitiv zon. di rεkomεndεd kul rεt na at le 30-50°C/min (tin klos kin achy 100-200°C/min via εya kol). Rapid kol (quenching) de prodyuz lכw kristaliniti (45-50%), we de gi sכft, taf kכt wit smol sכf, strכng adheshon, εksεlεnt nכn-stik pεrformεns, εn rεsistεns to delamination εn krak. Slow kol (fכrnas kol) de rizulta in hכy kristaliniti (60-70%), we de mek rigid, britl kכtin dεm we kin shrink, pil εn maykrokrak.

Dɛn mek ay-tɛnsil PTFE ay-tɛmpracha klos bay we dɛn kɔt PTFE pan ay-strɛng fayba glas fabrik, we de gi tɛnsiɛl trɛnk, ɔt rɛsistɛns, nɔ-stik prɔpati, kemikal rɛsistɛns, ɛn lɔw frikshɔn. Ki aplikeshɔn dɛn inklud: industrial kɔnvɛying (ɔt shrink pak, it bek, tɛkstayl drya, pepa/film drying); kompoziyt molding rilis klos ɛn hot prɛs kusɛn layna dɛn; wɛldin kɔtin dɛn we de protɛkt ɛn jakit dɛn we de mek di ples wam; ilɛktrik motoka ɛn transfɔma insuleshɔn; bildin slaydin bia ɛn paip layn sɔpɔt; kεmikכl filtrεshכn εn valv siling insay kכrosiv envayroment. Ay tɛnsiɛl trɛnk de mek shɔ se i de te ɔnda tɛnsiɔn, tear, ripit fleks, ɛn ay-tɛmpracha mɛkanikal strɛs akɔs dɛn difrɛn ebi ebi aplikeshɔn ya.

We dɛn de sinta, di PTFE patikyula dɛn pan fayv glas fabrik de mɛlt ɔp 327°C, we de pwɛl di ɔrijinal fold-chen lamɛl ɛn patikyula bɔda fɔ mek wan amɔf mɛlt. we i kol, PTFE de rikristalayz insay sfεrulayt dεm we kכmכp fכ raydial כriεnt lamεl dεm, wit kristaliniti we de rεnj 50–70%. di kol rεt de ditarεmin di kristכl pafεkshכn: slo kכl de gi hכy kristaliniti, big sfεrulayt dεm, bכku hadnεs; we di kεnch kwik kwik wan de gi fayn fayn sfεrulayt dεm εn i de impruv fεksibiliti.

Dis teknikol brif frɔm Jiangsu Aokai de analayz aw pasmak lɔw ɔ ay sintering tɛmpracha de damej PTFE ay-tɛmpracha klos. lכw sinta de lεf patikyula dεm nכ mεlt, we de mek maykro-por dεm, wik kכt-sabstεrayt bכnd, rכf sεf, pwεl mεkanikal trεnk, εn milky opaque apinεns. If yu ɔt pasmak, i de mek PTFE tɛmral dɛgradɛshɔn, i de mek pinhol, bɔbul, brit, yɔlɔ-to-blak diskɔlɔreshɔn, ɛn rilis pɔyzin fum. Ɔl tu di ekstrem dɛn de pwɛl kɔmpakt, nɔ-stik pefɔmɛns, fleksibiliti, insuleshɔn, ɛn dimɛnshɔnal stebiliti.

PTFE ay-tɛmpracha klos insuleshɔn gasket dɛn kɔba ay dayelɛktrik trɛnk (stebul ɔnda humiditi), -70°C to 260°C tɛmpracha rɛnj, yunivasal kemikal rɛsistɛns (eksept mɔlt alkali mɛtal), nɔ-stik sɔfays (de mek i nɔ krip), anti-krip (fayba glas riinfɔsmɛnt vs. klin PTFE), ay tɛnsiɛl trɛnk, lɔw frikshɔn (μ=0.05-0.1), ɛn V-0 flaym raytin. We yu kɔmpia am wit mayka, rɔba, ɛn klin PTFE gasket, PTFE klos de gi spɛshal fleksibiliti, prɔsesabiliti, ɛn lɔng tɛm dimɛnshɔnal stebiliti. I fayn fɔ transfɔma, motoka insuleshɔn, kemikal flɛnch silin, ɛn sɛmikɔndɔkta ikwipmɛnt.

PTFE klos flatnɛs we dɛn de sinta nid prɛsis tɛnsiɔn, tɛmpracha, ɛn rɛstrayn kɔntrol. Di men we dɛn fɔ du am: stenta mashin (pin plet dɛn de mentɛn di wit, mek di weft nɔ shrink), gradient tɛmpracha profayl (slɔ ɔt → 380-400°C hold → slo kol dɔŋ 310°C bifo i rilis tɛnsiɔn), prɛ-shrunk sabstret (rimov wef strɛs bifo dɛn kɔt), ɛn yunifom kɔtin tik (de mek difrɛns mɛlt). Stenter restraint fɔ de te i kol dɔŋ di PTFE kristalizashɔn pɔynt (aprɔx. 310°C) fɔ mek i nɔ wɔp.

Kotin yunifomiti durin PTFE emulshɔn impregnashɔn fɔ fayv glas fabrik na di layflayn fɔ prodak kwaliti. di tin dεm we de mek di kכt we nכ ivin de kכz: nכn-stik fεil (stik na tin spat dεm), mεkanikal wik (strεs kכnsantreshכn, tεar), ilektrikal instεbiliti (brεk dכwn vכltεj dכn to 1/10), kεmikכl pεnεtreshכn (pinhol kכroshכn), dimεnshכnal ishu dεm (wכpεj), εn prכsεsin dεfεkt (bεlt wandering, tiknes vεryushכn). Yunifɔm kɔtin nid prɛsis kɔntrol fɔ di emulshɔn viskɔsiti, sɔlid kɔntinyu, fabrik tɛnsiɔn, swɛt gap, ɛn mɔlti-zon drying/sintering profayl.

PTFE ay-tεmprachכ klos de כnda fכ stej dεm fכ strכkchכral chenj as tεmprachכ de go כp: dכn 260°C – slo maykro-krak εn rεsidyual aditiv vכlatilayzεshכn; na 327°C (mεlt pכynt) – kristalin-to-amorphous transishכn, kכt de sכft, delaminate frכm fayv glas; 400-500°C – PTFE de dipolimεrayz (i de rilis tכxik gas dεm), di kכt de vεnish; oba 500°C – fayv glas de sכft (840°C sכft pכynt) εn i de lכs strכkchכral integriti. Stay dכn 260°C kכntinyu, avכyd >300°C pik fכ sef כpεreshכn.