Hoʻopili kēia ʻatikala i ka hoʻohana ʻana i ka lole wela kiʻekiʻe ʻo Teflon (PTFE-coated fiberglass fabric) ma ke kahua aerospace. Nā wahi noi nui: ʻO ka hana ʻana i nā mea hana - hoʻokuʻu i ka lole/kiʻiʻoniʻoni i loko o ka hoʻoheheʻe autoclave, nā papa kaʻawale, nā kāʻei conveyor wela kiʻekiʻe no ka hana prepreg; ʻEnekini a me ka pale wela wela - nā pale pale pale ahi, nā mea hoʻohui wela kiʻekiʻe maʻalahi; ʻO ka hoʻokaʻawale uila a me ka pale ʻana i ke kaula uea - ka ʻōwili ʻana i ke kaula i loko o nā keʻena ʻenekini a me nā kaʻa kaʻa pae ʻana; ʻO loko o ka mokulele a me ka pale ahi - nā pale ahi/nā pale uahi e kū ana i nā kūlana FST, ka uhi ʻana i ka pale pale wela/acoustic insulation; Nā noi ākea a me nā aerospace - nā hui hoʻohuihui multi-layer (MLI), anti-cold-weld lubrication liners no nā mīkini hoʻoneʻe solar panel a me nā hinges antenna, nā lole hoʻomalu wela.

Hōʻike kēia ʻatikala pehea ka hoʻopaʻa ʻana o ka PTFE i ka uhi ʻana o ka lole fiberglass i ka lole wela wela o Teflon. ʻAʻole hiki ke hoʻopaʻa kemika pololei ma muli o ka ikehu ʻili o ka PTFE. Loaʻa ka hoʻopaʻa ʻana ma o: Mechanical interlocking (physical bonding) — PTFE emulsion ke komo i nā ʻāpana fiber a hoʻopaʻa i nā puʻupuʻu fiber ma hope o ka sintering; ʻO ka hoʻomaʻamaʻa mua ʻana o ka mea hoʻohui Silane - hoʻokumu i ke alahaka molekala ma waena o nā fiber aniani inorganic a me ka primer organik; ʻO ka papa hoʻololi mua kemika - me ka hoʻohana ʻana i nā resins PAI, PPS, PES a i ʻole PEEK me ka micropowder PTFE, i hoʻohana ʻia ma hope o ka hoʻopili ʻana i ka lāʻau e hana i ka papa hoʻololi ikaika; Lamination kiʻiʻoniʻoni hoʻoheheʻe wela - FEP a i ʻole PFA kiʻiʻoniʻoni (kahi hoʻoheheʻe 260-310 ° C) i hoʻopaʻa mua ʻia nā kiʻiʻoniʻoni PTFE i ka lole; ʻO ka hoʻolālā gradient ma o ka nui o ka impregnation a me ka sintering cycles - dilute first pass me ka binder/coupling agent e komo hohonu i loko o nā fibers, a ukali ʻia e nā impregnations PTFE maʻemaʻe, e hana ana i ka gradient haku mele mai fiberglass a PTFE maʻemaʻe.

Kūkākūkā kēia ʻatikala pehea ka hoʻolālā ʻana o ka microporous structure o breathable Teflon (PTFE) kiʻekiʻe-mehana tape ke kaulike i ka ea me ka insulation a me ka waiwai ʻole. ʻO ka hakakā kumu: pono ka ʻae ʻana o ka ea i nā pores hāmama, ʻoiai ke koi nei ka insulation i ka density a me ka non-stick e pono ai i nā ʻili laulima. Nā hoʻolālā hoʻolālā kaulike: e hoʻomalu i ke anawaena pore awelika (0.1-2μm, kūpono <0.5μm) e pale i ka hoʻoheheʻe ʻana a mālama i ka puʻupuʻu haʻihaʻi; e hoʻomalu i ka porosity ma 50-70% (≈60% maikaʻi) e loaʻa ana iā Gurley 20-100s / 100cc a me ka ikaika dielectric ≥2kV no ke kiʻi 0.13mm; e hoʻohana i ke ʻano pore network 3D kiʻekiʻe-tortuosity (τ≈2.5-4) e hoʻopaʻa i nā ala hoʻokuʻu pololei; kūkulu i ka ʻano pore gradient asymmetric me ka ʻili ʻili o ka ʻili (1-5μm) no ka non-stick/insulated a me ka porous i loko no ka hanu; e hoʻohana i ka super-oleophobic/hydrophobic surface post-treatment me ka ʻole o ka paʻa ʻana o ka pore.

Hōʻike kēia ʻatikala i nā pono o ka lole wela kiʻekiʻe PTFE e like me ka media kānana kiʻekiʻe. ʻEono mau ikaika nui: ʻO ke kūpaʻa wela koʻikoʻi (260 ° C mau, kiʻekiʻe ~ 300 ° C), ma mua o PPS (190 ° C) a me ka aramid (200 ° C); ʻO ka inertness kemika kiʻekiʻe e kū'ē i nāʻakika, alkalis, solvents a me oxidants, hydrolysis-resistant, outperforming aramid a me P84 i loko o ke kinoea kinoea corrosive; ʻOi aku ka maikaʻi o ka hoʻomaʻemaʻe ʻana i ka lepo me ka ikehu haʻahaʻa haʻahaʻa loa e hiki ai i ka wehe ʻana i ka lepo lepo maʻalahi a hoʻomau i ka hāʻule haʻahaʻa haʻahaʻa; ʻOi aku ka maikaʻi o ka kānana me ka nui o ka pore 0.1-3μm e hopu ana ma luna o 99.99% o nā ʻāpana PM2.5; Non-flammability me LOI ma luna o 95%, me nā koho anti-static i loaʻa; ʻO ka ikaika mechanical kiʻekiʻe mai ka fiberglass reinforcement, me ka PTFE fiber media maʻemaʻe e hāʻawi ana i ka maʻalahi a me ke ola o ka lawelawe> 4 makahiki. Hoʻohālikelike maikaʻi ʻia me ka PPS, aramid, Nomex, P84 a me ka fiberglass filter media ma waena o ka mahana, ke kūpaʻa kemika, ka pale hydrolysis a me ka hana hoʻomaʻemaʻe.

Hāʻawi kēia ʻatikala i nā ʻōnaehana hoʻonā no ka pale ʻana i ke koena adhesive a me ke koko adhesive i ka wā e hoʻohana ai i ka tape wela kiʻekiʻe PTFE e pale i nā manamana gula PCB i ka wā o ka hui SMT. Ka nānā ʻana i ke kumu kumu: loaʻa mai ke koena mai ka hāʻule ʻole ʻana a i ʻole ka hoʻololi ʻana o ke alo; hiki mai ke koko mai ka hāʻule ʻana o ka viscosity a me ke kahe ʻana o ka mea hoʻopili ma lalo o ka wela hou. ʻO ka hopena koʻikoʻi ke koho lipine kūpono: silicone PSA me ka wā pōkole ≥300 ° C, hoʻomau ≥260 ° C, ka mānoanoa holoʻokoʻa 0.08-0.13mm me nā ʻāpana adhesive kiʻekiʻe-cohesion, a me ka hōʻoia anti-bleed / koena ʻole. ʻEono kaʻina hana hoʻomalu: hoʻomaʻemaʻe mua-lamination me IPA; zero-tension lamination me ka hoʻokuʻu ʻana i ka ea piha; ʻOi aku ka maikaʻi o ka hoʻoheheʻe ʻana i ka wela me ka hoʻomehana mālie (<2°C/s); ʻili anuanu ma lalo o 50 ° C ma ke kihi 180 °; ka hana koke ʻana i loko o 24 mau hola a hoʻohana hoʻokahi wale nō; ka hoʻohana ʻole ʻana me ka holoi ʻana i ka IPA a me ka nānā ʻana i ka mea hoʻonui 40-50x. No nā PCB ʻaoʻao ʻelua, e hoʻololi me ka lipine hou ma mua o ka hana ʻana i ka ʻaoʻao ʻelua.

Hāʻawi kēia ʻatikala i ke alakaʻi ʻōnaehana no ka pale ʻana i nā wrinkles ma ka PTFE kiʻekiʻe-mehana lole i ka wā sintering. ʻO nā wrinkle ke kumu ma muli o ka emi ʻana o ka wela a me ke kaumaha ʻole. Hoʻopili nā mea hoʻonā i ke kahe hana piha: ka mana substrate maka (hoʻopau dewaxing / hoʻonohonoho wela e hoʻopau i ke koʻikoʻi o loko); ka impregnation a me ka maloʻo ʻana (nā ʻāpana lahilahi he nui, ke aniani wela haʻahaʻa, nā wili holo ikaika); ka hoʻomalu ʻana i ka umu ahi (1-3% overfeed no ka hāʻawi ʻana i ka wela, ka hoʻopaʻa ʻana i ka micro-tension control, transverse temperature uniformity i loko o ± 5°C, gradient preheating-sintering-cooling curve, air-flotation furnaces e like me ka hopena maikaʻi loa, curved spreader rollers); ka hoʻoluʻu a me ka hoʻonohonoho ʻana (hoʻolili mālie, mālama i ka pālahalaha ʻana a hiki i lalo o 100 ° C, hoʻomaha piha ma mua o ka wili ʻana); ka nānā pūnaewele me ka nānā māmā ikaika a me ka nānā ʻana i ka infrared.

Hoʻopili kēia ʻatikala i ka hopena o ka hana ʻana o ka sandblasting a i ʻole ka matt hoʻopau ʻana i ka ʻili o ka PTFE lole wela kiʻekiʻe. Loaʻa nā hoʻololi i ʻekolu mau ʻāpana: Hoʻololi ʻia ka microscopic morphology mai ke aniani paheʻe e like me ke ʻano o ka ʻawaʻawa me ka hoʻonui nui ʻana i nā waiwai Ra/Rz, e hana ana i nā hale hoʻopaʻa hoʻokele mechanical 3D no ka hoʻopaʻa ʻana ma hope. ʻO ke kūpaʻa o ka uhi ʻana ke alo i nā pilikia: ʻO ka ʻili ʻana o ka ʻāpana PTFE, ka ʻike ʻana o ka substrate fiberglass (no ka nalowale ʻana o ka waiwai non-stick, ke komo ʻana o ka wai, a me ka hoʻemi ʻana i ka ikaika mechanical), a me nā microcracks a me nā ʻōpala.

Hōʻike kēia ʻatikala i ke kaʻina hana piha no ka hoʻoheheʻe ʻana i ka lole fiberglass me ka emulsion PTFE. ʻEhiku mau ʻanuʻu koʻikoʻi: ① Hoʻomaʻamaʻa mua (dewaxing/desizing) ma 350-400°C no ka wehe ʻana i nā mea hoʻohui lole; ② Emulsion formulation me 40-55% solid content a me surfactants no ka hoʻomaʻemaʻe maikaʻi ʻana; ③ ʻO ka impregnation ma ke ʻano dip-squeeze a i ʻole ka uhi ʻana o ke kauka; ④ Hoʻomaloʻo ma 100-150 ° C e hoʻoheheʻe mālie i ka wai a hana i kahi kiʻi PTFE maloʻo; ⑤ Sintering ma 360-390 ° C (a hiki i 400 ° C) e hoʻoheheʻe i nā ʻāpana PTFE i loko o ke kiʻiʻoniʻoni mau; ⑥ ʻO ka hoʻomaloʻo ʻana-sintering multi-cycle i hana hou ʻia 2-4 mau manawa e hiki ai i ka mānoanoa pahuhopu a me ka ʻike resin (45-65%); ⑦ Ma hope o ka mālama ʻana me ka mālama ʻana i ka corona, ka ʻoki ʻana i ka lihi, ka wili a me ka nānā maikaʻi. ʻO nā kumu mana: hoʻopau dewaxing, hoʻomaʻemaʻe emulsion piha, hoʻomaloʻo mālie, ka mahana sintering pololei, a me ka nui o ka uhi ʻana. Hāʻawi nā huahana i nā laminates i uhi ʻia i ke keleawe kiʻekiʻe, nā kāʻei conveyor wela kiʻekiʻe a me nā mea membrane kūkulu hale.

Hoʻopili kēia ʻatikala i nā hōʻailona hana koʻikoʻi no ka tape wela wela PTFE i hoʻohana ʻia i ka uhi ʻana i ka ʻūhā, ka mālama wela a me nā kaiapuni like. ʻOkoʻa loa nā koi koʻikoʻi mai ka hoʻohana ʻana i ka lewa: ʻoi aku ka koʻikoʻi o ka outgassing (TML≤1%, CVCM≤0.1%; aerospace/optical grades e koi iā TML≤0.5%, CVCM≤0.01%); pono e hōʻoia i ka pale wela no ka PTFE substrate (260°C) a me ka papa hoʻopili; koi ʻia ka PSA silicone haʻahaʻa haʻahaʻa i hoʻomaʻemaʻe ʻia no ka pale ʻana i ka siloxane contamination; ʻO ka mana paʻa wela kiʻekiʻe e pale i ka kolo a me ka hoʻokiʻekiʻe ʻana; ʻAʻole koi ka maʻemaʻe i ka hoʻokahe ʻana i ka fiber a me ka haʻahaʻa ionic content; ʻO ka lipine anti-static (ka pale ʻana o ka ʻili 10⁶-10⁹ Ω/sq) pale i ka pōʻino ESD; pono e loiloi ʻia ka pale plasma no nā kaʻina sputtering/PECVD; ʻO ka emi ʻana o ka wela ma lalo o 2% e hōʻoia i ka masking precision.

Hōʻike kēia ʻatikala i nā mea hoʻoheheʻe kūlohelohe i hiki ke kū i ka lole wela wela PTFE. Hōʻike ka lole fiberglass i uhi ʻia i ka PTFE i ka inertness kemika ʻokoʻa, e kūʻē ana i nā mea hoʻoheheʻe kūlohelohe maʻamau ma lalo o nā kūlana hana maʻamau me ka ʻole o ka hemo ʻana, ka pehu a i ʻole ka hopena kemika. ʻO nā ʻāpana hiki ke ʻae ʻia: nā waiʻona (methanol, ethanol, isopropanol), ketones (acetone, MEK, cyclohexanone), esters (ethyl acetate, butyl acetate), hydrocarbons (gasoline, toluene, xylene, hexane), halogenated hydrocarbons (dichloromethane, chlorodieTH), ether carbon carbon. nā waikawa (glacial acetic acid, formic acid), amines a me nā amides (triethylamine, DMF), phenols, a me nā mea ʻē aʻe e like me ka carbon disulfide, pyridine, ka ʻaila silicone a me ka wai kaʻa.