Mɔ̃ɖaŋu ŋuti nyatakaka kpui sia si tso Jiangsu Aokai gbɔ ku alesi dzoxɔxɔ si bɔbɔ akpa alo esi lolo akpa si le dzoxɔxɔ 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 fũ 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.

Nusiwo le dɔwɔƒewo ƒe kɔsɔkɔsɔ bliboa me kpɔa ŋusẽ ɖe PTFE emulsion ƒe asixɔxɔ dzi. Gazazã siwo le dziƒo (fluorite tomenukuƒe, nufamɔ̃ ƒe agbɔsɔsɔme si nye R22) ɖoa asixɔxɔ si woɖo ɖi. Lithium batri ƒe nublanu siwo le anyime ƒe didie nye nu vevitɔ si nana dzidziɖedzia le dzidzim ɖe edzi. Nusiwo wotsɔna naa amewo (dɔwɔƒewo ƒe dɔwɔwɔ ƒe agbɔsɔsɔme, numiemiewo dzi kpɔkpɔ) kple nusiwo wowɔ ƒe nyonyome (nu sesẽ siwo le eme, nusuewo ƒe lolome, dzadzɛnyenye ƒe hatsotso) naa asixɔxɔ ƒe ɖoɖowo. Nutome ŋuti sewo (PFOA/PFAS ƒe mɔxexeɖenu) doa ga si wozãna ɖe sedziwɔwɔ ŋu ɖe dzi. Nuwo tsɔtsɔ yi teƒe bubuwo (ʋuɖoɖo le kɔsɔkɔsɔ fafɛ me) tsɔa gazazã gã aɖe kpena ɖe eŋu. Asixɔxɔ ƒe nɔnɔmewo zɔna ɖe susu vevi aɖe dzi: fluorite/hydrofluoric acid ƒe asi = anyigba; ŋusẽ yeye ƒe batri didi = nɔnɔme ƒe mɔfiame; dɔwɔwɔ ƒe agbɔsɔsɔme kple ɖoɖowo = ɣeyiɣi kpui aɖe ƒe tɔtrɔ kpata ƒe nusiwo hea tɔtrɔ vɛ.

PTFE tape na atike pɔmpi / nugo anti-corrosion, non-stick, kple nutrenu takpɔkpɔ bia be sɔ substrate, adhesive ɖoɖo, kple atike media. Wokafu silicone PSA na dzoxɔxɔ 200-260°C kple acid/alkali; acrylic PSA tsi tre ɖe organic solvents ŋu gake eɖoa seɖoƒe na dzoxɔxɔ be wòaɖo ≤150°C. Le HF gome la, ne woɖa >80% alkali, alo chlorine trifluoride la, zã PTFE-ko ƒe nutsyɔnu (menye organic adhesive o). Vevietɔ: nusi wotsɔna léa nu ɖe ​​nu ŋue nye kadodo si gbɔdzɔ wu, ke menye PTFE ŋutɔ o.

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 ɖeɖe), 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 tape léle ŋusẽ nyona ɖe edzi to nutsyɔtsyɔ kple dɔyɔyɔ ɖoɖo optimization. Nusi wotsɔ blaa nu: primer layer (0.5-2μm silane primer xea mɔ na adhesive ƒe ʋuʋu), adhesive ƒe titrime 30-60μm (enyo wu na ŋusẽ léle), vacuum defoaming, kple 5-10μm filtration. Dɔyɔyɔ: dzoxɔxɔ afɔɖeɖe ɖesiaɖe (80-100°C solvent ɖeɖeɖa → 120-140°C ƒe nɔnɔme → 150-220°C goglo crosslinking), le gbedada megbe (40-60°C hena 24-48h be woaɖe nuteɖeamedzi dzi akpɔtɔ), kple tsɔtsɔ yi teƒe bubu si me teteɖeanyi boo aɖeke mele o be woaxe mɔ ɖe ememe nuteɖeamedzi tso substrate ƒe ɖeɖeɖa nu. Primer la le vevie na PTFE ƒe anyigbadziŋusẽ si bɔbɔ.

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, delaminate 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.

Wowɔa PTFE avɔ si me dzoxɔxɔ le ŋutɔ to tsidede tsi me zi ɖeka (to ɖeka: kabakaba, si mexɔ asi o, nu tsɛ, anyigba si le gbadzaa kple pinholes) alo tsidede geɖe (2-3+ to: ƒuƒu, si le ʋeʋẽm, pinhole-manɔmee, PTFE ƒe agbɔsɔsɔ 50-70%, dɔwɔwɔ nyuitɔ, ga si lolo wu). Single-dip sɔ na gasket siwo ƒe nyonyome mede o, ɣeyiɣi kpui aɖe ƒe mat, kple nusiwo gbɔ ya. Multi-dip hiã na nuɖuɖu-grade abolomegbawo, non-stick conveyor belts, high-frequency circuit substrates, atikewo ƒe ʋuƒo, kple xɔtuɖaŋu ƒe lãkusiwo.

PTFE dzoxɔxɔ gã avɔ yame atikewɔwɔ gblẽa atike ƒe dɔmawɔmawɔ na kadodo / agbalẽtata. Mɔnu ene: atikewo ƒe nuŋɔŋlɔ (sodium-naphthalene, anyigbadziŋusẽ 20→40-50 dyn/cm, viviti si nɔa anyi ɖaa, micro-porous structure), plasma-dɔdamɔnu (nano-roughening, dɔwɔwɔ ƒe ƒuƒoƒo ƒe grafting, fesre kpui si le dɔ wɔm), corona-dɔdamɔnu (thin-film, gbegblẽ kabakaba, goglome si seɖoƒe li na), kple laser-dɔdamɔnu (precision micro-patterning, controlled carbonization). Mɔnuwo katã naa ŋutilã me ƒuna eye wotsɔa atike dea polar ƒuƒoƒowo (C=O, -OH, -COOH) me be woate ŋu abla ɖe adhesive ŋu.