Nyati sia ƒo nu tso alesi microporous structure design of breathable Teflon (PTFE) high-temperature tape na ya ƒe gege ɖe eme kple nusiwo xea mɔ na ya kple nusiwo meléna o ƒe nɔnɔmewo da sɔ ŋu. Nu veviwo ƒe dzrewɔwɔ: ya ƒe gege ɖe eme bia be ʋuʋudedi naʋu, gake nusiwo xea mɔ na ya bia be woƒe kpekpeme nanye eye non-stick bia be woawɔ nusiwo le gbadzaa. Aɖaŋuɖoɖo ƒe mɔnu siwo da sɔ: akpɔ ʋuʋudedi ƒe didime le mama dedie nu (0.1-2μm, nyuitɔ kekeake <0.5μm) dzi be woaxe mɔ ɖe ʋuʋudedi ƒe gege ɖe eme nu eye woalé ʋuʋudedi ƒe ʋuʋudedi me ɖe asi; dziɖuɖu porosity le 50-70% (≈60% nyuitɔ kekeake) gbɔ ɖoɖo Gurley 20-100s / 100cc kple dielectric ŋusẽ ≥2kV na 0.13mm film; xɔ 3D network pore structure (τ≈2.5-4) si me tortuosity gã le be woatsɔ axe mɔ siwo dzi woɖea tsi le tẽe la nu; tu asymmetric gradient pore structure kple dense surface skin layer (1-5μm) na non-stick/insulation kple porous ememe na gbɔgbɔ; de super-oleophobic/hydrophobic anyigba dzi le atikewɔwɔ vɔ megbe evɔ pore blockage manɔmee.

Nyati sia ɖe viɖe siwo le PTFE avɔ si me dzoxɔxɔ le ŋutɔ ŋu fia abe dzoxɔxɔ gã ƒe filter media ene. Ŋusẽ vevi ade: Dzoxɔxɔ ƒe tsitretsitsi ɖedzesi (si yia edzi 260°C, eƒe kɔkɔƒe ~300°C), si wu PPS (190°C) kple aramid (200°C); Atikewo ƒe dɔmawɔmawɔ nyuie ŋutɔ ɖe acid, alkali, solvents kple oxidants ŋu, tsi mete ŋu tsia o, ewɔa dɔ nyuie wu aramid kple P84 le dzotsimɔ̃ si gblẽa nu me; Ke kɔklɔ ƒe dɔwɔwɔ deŋgɔ kple anyigbadziŋusẽ si bɔbɔ ŋutɔ si wɔnɛ be woate ŋu aɖe ke keke ɖa bɔbɔe eye nyaƒoɖeamenu sue si nɔa anyi ɖaa; Filteration ƒe dɔwɔwɔ nyuie ŋutɔ kple pore ƒe lolome 0.1-3μm si léa PM2.5 ƒe akpa siwo wu 99.99%; Dzoxɔxɔ manɔmee kple LOI si wu 95%, kple anti-static tiatia siwo li; Mɔ̃ɖaŋuŋusẽ gã tso fiberglass ŋusẽdodo me, kple PTFE fiber nyadzɔdzɔgblɔmɔnuwo dzadzɛ si naa asitɔtrɔ le nɔnɔmewo ŋu kple >ƒe 4 ƒe subɔsubɔ agbenɔƒe. Tsɔe sɔ kple PPS, aramid, Nomex, P84 kple fiberglass filter media le dzoxɔxɔ, atikewo ƒe tsitretsitsi, tsi ƒe ʋuʋu kple dzadzɛnyenye ƒe dɔwɔwɔ me nyuie.

Nyati sia na egbɔkpɔnu siwo wowɔ ɖe ɖoɖo nu hena mɔxexe ɖe adhesive ƒe nugbagbevi kple adhesive ƒe ʋu si dona nu ne wozã PTFE ƒe dzoxɔxɔ gã ƒe tape tsɔ kpɔa PCB sika asibidɛwo ta le SMT ƒe kpekpe me. Nusiwo gbɔ wòtso ƒe numekuku: nusiwo susɔ dzɔna tso cohesive kpododonu alo interfacial transfer me; ʋu dona tso viscosity drop kple adhesive overflow le reflow dzoxɔxɔ te. Core solution nye tape tiatia nyuie: silicone PSA kple ɣeyiɣi kpui aɖe ƒe taƒoƒo ≥300 ° C, yi edzi ≥260 ° C, blibo titrime 0.08-0.13mm kple tsɛ high-cohesion adhesive ƒuƒoƒo, kple anti-ʋu/nu susɔe-maɖe ɖaseɖigbalẽ. Afɔɖeɖe ade ƒe dɔwɔwɔ dzi kpɔkpɔ: dzadzɛnyenye do ŋgɔ na lamination kple IPA; zero-tension lamination kple ya ƒe ʋuʋu blibo; dzoxɔxɔ ƒe nɔnɔmetata si wowɔ nyuie wu le reflow me kple dzoxɔxɔ fafɛ (<2°C/s); vuvɔ ƒe ʋuʋu le 50°C te le 180° ƒe dzogoe dzi; dɔwɔwɔ enumake le gaƒoƒo 24 me eye woazãe zi ɖeka ko; kpododonu gbɔ kpɔkpɔ kple IPA tutu kple 40-50x magnifier ƒe ŋkuléle ɖe nu ŋu. Le PCB siwo ƒe axa eve le gome la, tsɔ kasɛt yeye ɖɔli wo hafi nàwɔ dɔ le akpa evelia ŋu.

Nyati sia na mɔfiame siwo wowɔ ɖe ɖoɖo nu le mɔxexe ɖe ʋuʋudedi nu le PTFE avɔ si me dzoxɔxɔ le ŋutɔ ŋu le sintering me. Dzoxɔxɔ ƒe ʋuʋu si mesɔ o kple nuteɖeamedzi si mewɔ ɖeka o gbɔe flitete tsona koŋ. Egbɔkpɔnuwo ƒo nu tso dɔwɔwɔ bliboa ŋu: nusiwo wotsɔ wɔe ƒe substrate dziɖuɖu (dewaxing/heat setting bliboe be woaɖe ememe nuteɖeamedzi ɖa); tsidedee kple etutu (nu tsɛ geɖe siwo wotsɔ blae, dzoxɔxɔ ƒe ɖiɖi fafɛ, ʋukuku ƒe ʋuƒo siwo le dɔ wɔm); sintering dzodoƒe dziɖuɖu (1-3% nuɖuɖu fũu akpa na dzoxɔxɔ ƒe shrinkage mɔɖeɖe, closed-loop micro-tension dziɖuɖu, transverse dzoxɔxɔ ɖekawɔwɔ le ±5 ° C, gradient preheating-sintering-fafa curve, ya-flotation dzodoƒewo abe egbɔkpɔnu nyuitɔ kekeake, curved kaka rollers); fafa kple ɖoɖowɔwɔ (fafa vivivi, lée ɖe te be wòakaka vaseɖe esime wòade 100°C, fafa blibo hafi nàƒoe); ŋkuléle ɖe nu ŋu le Internet dzi kple kekeli ƒe ŋkuléle ɖe nu ŋu sesĩe kple infrared scanning.

Nyati sia ku alesi sandblasting alo matt finishing treatment kpɔa ŋusẽ ɖe PTFE avɔ si me dzoxɔxɔ le ŋutɔ ƒe anyigba ƒe wɔwɔme dzi. Tɔtrɔwo dzɔna le akpa etɔ̃ me: Nusuekpɔmɔ̃ ƒe nɔnɔme trɔna tso ahuhɔ̃e si le abe ahuhɔ̃e ene ƒe nɔnɔme si le gbadzaa dzi va zua tɔʋu ƒe nɔnɔme si le gbadzaa eye Ra/Rz ƒe asixɔxɔwo dzina ɖe edzi ŋutɔ, si wɔnɛ be 3D mɔ̃ɖaŋununya ƒe seke ƒe xɔtuɖoɖowo dona hena kadodo si kplɔe ɖo. Afɔkuwo dze ŋgɔ nutsyɔtsyɔ ƒe blibonyenye: PTFE ƒe ƒuƒoƒoa ƒe ƒuƒu, fiberglass substrate si ate ŋu adze (si ana nusiwo meléna o ƒe nɔnɔme nabu, tsi ƒe gege ɖe eme, kple mɔ̃ ƒe ŋusẽ dzi ɖeɖe kpɔtɔ), kpakple microcracks kple gbeɖuɖɔwo ƒe dzidzi.

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 350-400°C 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 Dɔdamɔnu megbe dɔdamɔnu si me corona dada, nugbɔ lãɖeɖe, ʋuʋudedi kple eƒe nyonyome me dzodzro hã le. Nu vevi siwo dzi wokpɔna: dewaxing blibo, emulsion tsidede blibo, vivivi ƒuƒu, sintering dzoxɔxɔ si sɔ pɛpɛpɛ, kple coating density si mewɔa tɔtrɔ o. Adzɔnuwo subɔa akɔbli-bla laminate siwo ƒe ɣeyiɣi deŋgɔ, dzoxɔxɔ gã ƒe mɔ̃ siwo wotsɔna tsɔa nu kple xɔtuɖaŋu ƒe lãkusi ƒe nuzazãwo.

Nyati sia ƒo nu tso dɔwɔwɔ ƒe dzesi veviwo ŋu na PTFE dzoxɔxɔ gã ƒe tape si wozãna le vacuum coating, vacuum heat treatment kple nɔnɔme mawo tɔgbe me. Nudidi veviwo to vovo kura tso yamenutome zazã gbɔ: ya si dona le emee nye nu vevitɔ kekeake (TML≤1%, CVCM≤0.1%; yamenutome/nukpɔkpɔ ƒe dzesiwo hiã TML≤0.5%, CVCM≤0.01%); ele be woaɖo kpe dzoxɔxɔ ƒe tsitretsitsi dzi na PTFE substrate (260°C) kple adhesive layer siaa; silicone PSA si me ya si mebɔ o si ŋu wokɔ etɔxɛe hiã be woatsɔ axe mɔ ɖe siloxane ƒe ɖiƒoƒo nu; ŋusẽ si léa dzoxɔxɔ gã me xea mɔ na creep kple edge lifting; dzadzɛnyenye mebia be womaɖe ka aɖeke ɖa o eye ionic mesɔ gbɔ ɖe eme o; anti-static tape (anyigba ƒe tsitretsitsi 106-109 Ω/sq) xea mɔ na ESD ƒe gbegblẽ; ele be woada plasma ƒe dɔlélenutsiŋutete kpɔ hena sputtering/PECVD ƒe dɔwɔwɔwo; dzoxɔxɔ ƒe shrinkage si le 2% te kpɔa egbɔ be masking la sɔ pɛpɛpɛ.

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 ƒo dzoe 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 ŋutɔ le non-stick me, 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.

Nyati sia tsɔ xɔme ƒe dzoxɔxɔ kple dzoxɔxɔ gã ƒe tsitsi sɔ kple silicone pressure-sensitive adhesive na PTFE tape. Dzoxɔxɔ gã ƒe tsitsi (120-180°C) naa crosslinked networks dense siwo ƒe ŋusẽ sesẽ si ƒoa ƒu, si xea mɔ na adhesive ƒe nugbagbevi siwo susɔ le wo ɖeɖe vɔ megbe. Ewɔa atikewo ƒe seke ƒe kadodowo kple PTFE substrates to primer co-curing dzi, si ɖea delamination ƒe afɔkuwo ɖa. Dzoxɔxɔ gã ƒe tsitsi hã ɖea molecule siwo mebɔ o ƒe dzoxɔxɔ ɖa hafi wotsɔa wo vɛ, si xea mɔ na bubbling kple silicone ami ƒe ɖiƒoƒo le dzoxɔxɔ gbãtɔ me.