Fiberglass avɔ si keke ta (bulked yarn fabric) to vovo kura tso fiberglass avɔ si wozãna ɖaa gbɔ le ka ƒe wɔwɔme gome. To ya si me ya ƒe nyaƒoɖeamenu sesẽ ƒe dɔwɔwɔ dzi la, woɖea ahuhɔ̃e ƒe ka siwo nɔa anyi ɖaa la ɖe vovo, ƒoa wo nu ƒu, eye wotsɔa wo ƒua gbe ɖe ka si lolo abe kotoku ene me. Esia naa avɔ si le kpekpem wu, si fa wu si ƒe dzoxɔxɔ xea mɔ na dzoxɔxɔ si de ŋgɔ wu (ya ƒe ƒuƒoƒo siwo xa), si te ŋu wɔa ɖeka nyuie wu, eƒe ʋuʋu nyuie wu, eye wònaa aɖatsi/ʋuʋu ƒe tsitretsitsi nyona ɖe edzi – le ga si woatsɔ axe mɔ ɖe tensile ŋusẽ si bɔbɔ vie ta. Wozãnɛ na gasket siwo me dzoxɔxɔ le ŋutɔ, pɔmpiwo ƒe bablawo, kotoku siwo me woɖea tsi le, kple dzodoƒe ƒe nutrenuwo.

Raw nu dzadzɛnyenye nye gɔmeɖoanyi na PTFE dzoxɔxɔ gã avɔ dɔwɔwɔ. PTFE emulsion si le dzadzɛ ŋutɔ (ga ions aɖeke mele eme o, molecule ƒe kpekpeme sue ƒe nugbagbevi aɖeke mele eme o) kpɔa egbɔ be dzoxɔxɔ te ŋu nɔa te ɖe enu (womewɔa ɣie o vaseɖe 260°C), meléna ɖe nu ŋu o, eye dielectric ŋusẽ si lolo. Le fiberglass gome la, E-glass si me alkali mele o (Na2O <0.8%) léa ŋusẽ kple nusi xea mɔ na dzoxɔxɔ me ɖe asi le dzoxɔxɔ gã me; glass si me alkali le titina/si me alkali sɔ gbɔ ɖo la nana wògblẽna. Ne woɖe avɔlɔlɔ̃ ƒe lolomedzidzenuwo ɖa keŋkeŋ xea mɔ na carbonization kple delamination. Dzadzɛnyenye kpɔa ŋusẽ ɖe subɔsubɔ ƒe agbenɔƒe, nuɖuɖu ƒe dzidzenu dzi wɔwɔ, kple elektrikŋusẽ ƒe kakaɖedzi dzi tẽ.

Fiberglass avɔ ƒe ƒuƒu nyuie do ŋgɔ le vevie ŋutɔ na PTFE ƒe nutsyɔtsyɔ si kplɔe ɖo, resin ƒe tsidedee, alo lamination. Dɔdamɔnu vevi etɔ̃: tsi ɖeɖeɖa le 105-120°C (10-30 min le kpekpeme nu), dewaxing/thermal cleaning le 300-450°C (LOI <0.1%, ƒo asa na>500°C), kple dzoxɔxɔ do ŋgɔ le 60-100°C hafi woatsyɔ edzi. Dzra dzodoƒe ƒe dzoxɔxɔ ƒe ɖekawɔwɔ (±5°C) dzi, nàzi tsi si le eme dzi, eye nàkpɔ avɔ siwo ŋu wotsɔ silane ɖo la ta le dzoxɔxɔ si mede 110°C o nu. Dzra avɔ ƒuƒu ɖo ɖe kotoku siwo wotu nu alo xɔ ƒuƒuwo me (<30°C, <40% RH).

PTFE ƒe dzoxɔxɔ gã ƒe tape la te ŋu nɔa te ɖe dze sisi nu nyuie ŋutɔ, gake nusiwo gbɔdzɔe nye nusi léna ɖe nu ŋu kple fiberglass substrate ƒe goawo. Dodokpɔmɔnu: 1000h neutral salt spray (NSS) dodokpɔ, dzidzedze le peel ƒe ŋusẽ léle ɖe te (≥80% hiã), ŋku ƒe gbɔdzɔgbɔdzɔ (kɔkɔ, blistering), kple ga substrate ƒe xɔxlɔ̃. Le ƒumelãwo kple nuto siwo me dze sɔ gbɔ ɖo gome la: zã silicone PSA (menye acrylic o), PTFE substrate si me wode tsii bliboe, tsɔ nutrenu si te ŋu nɔa te ɖe yame ƒe nɔnɔme nu xea goawo nu, eye nàtsɔ primer asisi ɖe ga ŋu.

PTFE avɔ si me dzoxɔxɔ le ŋutɔ (PTFE-coated fiberglass) mewɔa dɔ o kloe le atikewo gome, gake nu aɖewo nana xɔa gblẽna le nɔnɔme aɖewo koŋ me. PTFE ƒe amedzidzedze tẽ dzɔna kple alkali ga siwo wofa (sodium, potassium), fluorinating agents sesẽwo (F2, ClF3) le dzoxɔxɔ gã me, kple alkali sesẽ siwo wofa si wu 300°C. Dzoxɔxɔ si metso tẽ o dzɔna ne hydrofluoric acid (HF), alkali dzodzoe siwo me wode nu me, alo phosphoric acid dzodzoe ge ɖe nusiwo wotsɔ blae ƒe gbagbãƒewo me eye wodze fiberglass-nu si le ete la dzi. Ne èdi atikewo ƒe dɔwɔwɔ si gbɔ eme la, zã PTFE film dzadzɛ si me fiberglass mele o.

PTFE ƒe dzoxɔxɔ gã ƒe tape megaléna ɖe eŋu o le eŋudɔwɔwɔ enuenu megbe le ɖiƒoƒo si le eƒe go dzi (ke, silicone ami), adhesive cohesive failure (nu susɔe), alo substrate ƒe kadodo si gbɔdzɔ ta. Egbɔkpɔnuwo: silicone PSA si ƒe crosslink lolo (ʋuʋudedi sue, tack/holding power si da sɔ), primer ƒe atikewɔwɔ ɖe PTFE substrate dzi, dense fiberglass backing, kple eŋudɔwɔwɔ nyuie (anyigba siwo le dzadzɛ, peel fafɛ, 180° angle). Agbɔsɔsɔme dodokpɔ ɖoa ​​kpe ŋgɔyiyi dzi.

PTFE avɔ si ƒe dzoxɔxɔ lolo (PTFE-coated fiberglass) ƒe dzoxɔxɔ ƒe tsitretsitsi nyuie ŋutɔ le eƒe dɔwɔwɔ ƒe didime si sɔ si nye -70°C va ɖo 260°C me. Ate ŋu ado dzi le dzoxɔxɔ ƒe tsatsam kabakaba me, le kpɔɖeŋu me, ʋuʋu tso -50°C nufamɔ̃ dzi yi 260°C ƒe nufamɔ̃ dzodzoe me. Dzesidede nyuitɔwo nɔa agbe gɔ̃ hã ne wofa kpata tso 260°C va zu 10°C tsi. Gake ne wotsɔ nusi wotsɔ wɔe la nadzi ɖe edzi tso dzoxɔxɔ si wu 300°C (si gogo PTFE ƒe 327°C ƒe dzoxɔxɔ ƒe teƒe) ana wòagbã enumake eye wòaɖe ɖa. Fiberglass substrate la naa didime ƒe liƒo; PTFE ƒe nutsyɔnu lae nye nusi seɖoƒe li na.

Wozãa PTFE avɔ si ƒe dzoxɔxɔ lolo ŋutɔ le atikewɔƒewo hena dɔ vevi adre: flange gaskets kple pipe linings (tsi tre ɖe acid/alkali sesẽwo ŋu), reactor kple tank linings (xea mɔ na ga ƒe xɔxlɔ̃, dzadzɛnyenye bɔbɔe), filter bags na corrosive flue gas (vaseɖe 260°C), anti-corrosion expansion joints na ducts, anti-adhesion welding pads, asiɖeɖe le avɔ ŋu na composite molding, kple elektrik/dzoxɔxɔnutsitike wraps. FDA kple UL ƒe dzesiwo li.

PTFE ƒe dzoxɔxɔ gã ƒe tape si wodzra ɖo le nɔnɔme aɖewo koŋ me (10-25°C, 40-70% RH, adzɔge tso UV/nyaƒoɖeamenu sesẽ gbɔ) ƒe agbenɔƒe si woɖo ɖi enye ɣleti 3-6 (dzidzenu nyuitɔ vaseɖe ɣleti 12). Nu vevi siwo gblẽa nu le eŋu: mele be lãgbalẽ ƒe ŋusẽ naɖiɖi wu 70% le asixɔxɔ gbãtɔ me o; nusi léna ɖe nu ŋu ƒe akpa aɖeke meli le dzoxɔxɔ gã aɖe ɖeɖeɖa megbe o; carbonization alo cracking aɖeke mele dzoxɔxɔ si woɖo ɖi me o. Dodokpɔ kabakaba: asi ʋuʋu ƒe seselelãme, 260°C ƒe nugbagbevi susɔe dodokpɔ, kple lamination shrinkage dodokpɔ.

PTFE avɔ si ƒe dzoxɔxɔ lolo (PTFE-coated fiberglass) naa viɖe vevi ene abe nusi tsi tre ɖe xɔxlɔ̃ ŋu ene: atikewo ƒe dɔmawɔmawɔ (tsi tre ɖe aqua regia, alkali sesẽwo, atike siwo wotsɔna tsia tsii nu), dzoxɔxɔ ƒe didime si keke (-70°C va ɖo 260°C madzudzɔmadzudzɔe, 350°C ƒe kɔkɔƒe), didime ƒe liƒo (<0.5% didime), kple anyigba si meléna o (ele bɔbɔe dzadzɛnyenye, xea mɔ na nuwo ƒe ƒuƒoƒo). Wozãnɛ le atikewo ƒe pɔmpiwo, sulfurization towers, pickling tanks, kple nuɖuɖu/atikewɔnuwo me. FDA ƒe dzeside siwo li.