PTFE ay-tɛmpracha fabrik (PTFE-coated fiberglass) na prɛmiɔm filta midia fɔ ekstrim kɔndishɔn: fɔ pul flu gas dɔst (simɛnt, west insinɛshɔn, kol bɔyl dɛn we go rich 260°C), kɔrosiv likwid filtreshɔn (asid, alkali, ɔyl), it/famasiutik steril filtreshɔn, ɛn HEPA klin rum filta. Di say we nɔ stik kin mek dɔst nɔ kek ɛn i kin mek i izi fɔ klin. Membran-laminated gred dεm de achy ultra-lכw efyushכn.

PTFE ay-tɛmpracha klos de mentɛn fayn fayn ilɛktrik insuleshɔn frɔm -180°C to 260°C: volyum rɛsistiviti >1013 Ω·cm na 200°C, dayelɛktrik kɔnstant stebul na 2.0-2.1. oba 260°C, PTFE de sof, i de kכmכt oba 327°C, i de lכs insulεshכn fכ כltεm. dכn 0°C, insulεshכn de impruv bכt di kכt de bi brit. Stay insay 260°C fɔ rili pefɔmɛns.

PTFE ay-tɛmpracha fabrik (PTFE-coated fiberglass) na fayn tin fɔ it kɔnvayɔr bɛlt bikɔs ɔf in 260°C ɔt rɛsistɛns, -70°C kol fleksibiliti, nɔ-stik sɔfays, ɛn FDA kɔmplians. Ki aplikeshɔn dɛn: bekeri ɔvin (biskit, bred, pizza), fried it kɔnvayɔ, kandy kol layn, friz tanɛl, ɔt sila, ɛn rɔla rap. I de ridyus di tɛm we dɛn de west ɛn fɔ klin.

Kalɛnda – we yu prɛs PTFE-kɔt fabrik bitwin di ɔt miro rɔla dɛn na 360-380°C – i de chenj di sɔfayz mɔfɔlɔji, rilis prɔpati, impermiabiliti, ɛn mɛkanikal pefɔmɛns bad bad wan. i de ridyus di rכf frכm Ra 0.5-1.0 μm to <0.05 μm, i de sial pinhol dεm, i de impruv di wear rεsistεns, bכt i de dכn di tεar strכng εn fleksibiliti. Impɔtant fɔ rilis layna ɛn ilɛktrik insuleshɔn.

Kotin yunifɔmiti fɔ PTFE ay-tɛmpracha fabrik na 4 tin dɛn de disayd: kɔtin fɔmyulashɔn (patikul saiz 0.15-0.35 μm, viskɔsiti, sɔlid kɔntinyu), kɔtin & sinta prɔses (bled kɔtin we dɛn kin lɛk fɔ yunifom), sabstret kwaliti (wev patɛn, prɛ-tritmɛnt), ɛn prodakshɔn ɛnvayrɔmɛnt (20-25°C, <60% RH). Dip + bled kɔmbayn prɔses balans penetreshɔn ɛn sɔfays smol smol.

PTFE ay-tɛmpracha fabrik ɛn silikon fabrik ɔl tu de yuz fayv glas klos as bays bɔt dɛn difrɛn pan kɔtin matirial (PTFE rɛsin vs silikon rɔba). PTFE fayn fayn wan pan nɔ-stik, wear resistans, ɛn kemikal resistans te to 260°C. Silikɔn klos de gi fayn fayn fleksibiliti, ilɛktrik insuleshɔn, ɛn faya rɛsistɛns (we go rich 230°C). Pik bay wetin yu de put fɔs.

PTFE ay-tɛmpracha fabrik de gi ɛksepshɔnal kemikal rɛsistɛns, we de bia wit strɔng asid, alkali, ɔrganik sɔlvɛnt, ɛn kɔrosiv gas dɛn. Dis atik l de tɔk mɔ bɔt di tin dɛn we i nɔ ebul fɔ fɛt, di tin dɛn we i nɔ ebul fɔ du (molten alkali metals, strong fluorinating agents), ɛn di men trn dɛn lɛk di tɛmpracha, di kɔnsɛntreshɔn, ɛn di mɛkanikal strɛs.

PTFE impregnation nɔ jɔs de fɔ fayv glas klos. Dis atikul introduks 7 ɔltɛrnativ sabstret dɛm – aramid, kabɔn fayba, PBI, porous mɛtal, grafayt, asbest (phased out), ɛn sɛramik fil dɛm – wit dɛn prɔses ficha dɛm, advantej dɛm, limiteshɔn dɛm, ɛn ki aplikeshɔn dɛm.

Dis atikul de ɛksplen wetin mek alkali-fri fayv glas klos na di sabstret we dɛn kin lɛk fɔ PTFE ay-tɛmpracha klos. I de kɔba kemikal bonding via silane kɔpl ɛjɛn ɛn ki fizik prɔpati dɛn lɛk tɛmal stebiliti, dimɛnshɔnal stebiliti, ɛn kɔrɛshɔn rɛsistɛns – we de mek shɔ se i de wok fɔ lɔng tɛm na harsh ɛnvayrɔmɛnt.