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 wela sintering pololei, a me ka nui o ka uhi ʻana. Hāʻawi nā huahana i nā laminate keleawe-ʻaʻahu 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 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%; koi ʻia nā māka aerospace/optical 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 hoʻoheheʻe 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 nā waikawa (glacial acetic acid, formic acid), amines a me nā amides (triethylamine, DMF), phenols, a me nā mea ʻē aʻe e like me carbon disulfide, pyridine, silicone oil a me ka wai hoʻomaha.

Hoʻopili kēia ʻatikala i nā koi o ka hoʻoilo i ka wā PTFE kiʻekiʻe-mehana lole sintering. Ma hope o ka sintering ma 380-400 ° C, pono ka lole e hele wikiwiki i ka 310-315 ° C crystallization-sensitive zone. ʻO ka 30-50°C/min ka liʻiliʻi (hiki i ka lole lahilahi ke loaʻa i ka 100-200°C/min ma o ka hoʻoluʻu ea). ʻO ka hoʻomaloʻo wikiwiki (quenching) e hoʻopuka i ka crystallinity haʻahaʻa (45-50%), e hāʻawi ana i nā uhi palupalu a paʻakikī me nā papa laulima, paʻa ikaika, hana maikaʻi ʻole-stick, a me ke kūpaʻa ʻana i ka delamination a me ka haki. ʻO ka hoʻoluʻu lohi (ka hoʻoluʻu ʻana i ka umu) ka hopena i ka crystallinity kiʻekiʻe (60-70%), e hoʻopiʻi ai i ka paʻakiki a me ka palupalu nā uhi e hiki ke emi, ʻili a me nā microcracks.

Hoʻohālikelike kēia ʻatikala i ka hoʻomaʻamaʻa ʻana o ka lumi-mehana a me ke kiʻekiʻe-mehana o ka mea hoʻopili paʻi koʻikoʻi silicone no ka tape PTFE. Hoʻokumu ka hoʻomaʻamaʻa wela kiʻekiʻe (120-180 ° C) i nā ʻupena crosslinked paʻa me ka ikaika cohesive ikaika, e pale ana i ke koena adhesive ma hope o ka ʻili ʻana. Hoʻokumu ia i nā mea hoʻopaʻa hoʻopaʻa kemika me nā substrates PTFE ma o ka co-curing primer, e hoʻopau ana i nā pilikia delamination. Hoʻopau pū ka maturation wela kiʻekiʻe i nā volatiles haʻahaʻa haʻahaʻa ma mua o ka hoʻopuka ʻana, e pale ana i ka huʻihuʻi a me ka ʻaila silicone i ka wā hoʻomehana mua.

Hoʻopili kēia alakaʻi i ka PTFE kiʻekiʻe-mehana lipine koho no ka injection molding demolding a me nā noi anti-stick. Koho ma muli o ka wela: ≤260°C no nā plastic maʻamau (ka lipine PSA silicone maʻamau, 0.13-0.18mm); 260-300°C no nā plastics ʻenekinia kiʻekiʻe e like me PC, PA66, POM (kiʻekiʻe-temp silicone adhesive, 0.18-0.25mm); 300-400°C no PEEK, LCP, PPS kokoke i nā kukini wela (ʻaʻole hiki ke hoʻopaʻa ʻia; hoʻohana i ka lole PTFE adhesive-free a i ʻole PFA film). Koho ma muli o nā mea waiwai: pono nā mea hoʻokuʻu kiʻekiʻe i ka PTFE maʻemaʻe; ʻO nā mea aniani/mineral i hoʻopiha ʻia e koi i ka lipine 0.25mm paʻa kaumaha; ʻO nā mea hoʻohui corrosive e koi i ka mea hoʻopili kemika a me ka substrate paʻa; Pono nā noi static-sensitive anti-static black PTFE tape.

Hana ʻia ka lole wela kiʻekiʻe PTFE ma o ka uhi ʻana i ka PTFE ma luna o ka lole fiberglass ikaika, hāʻawi i ka ikaika tensile, pale wela, nā waiwai non-stick, kūʻē kemika, a me ka haʻahaʻa haʻahaʻa. ʻO nā noi koʻikoʻi: ka lawe ʻana i ka ʻoihana (ka wela wela, ka kuke ʻana i ka meaʻai, nā mea maloʻo lole, ka maloʻo pepa/kiʻiʻoniʻoni); ʻO ka lole hoʻokuʻu hoʻoheheʻe hui a me nā liner cushion press wela; wiliwili i nā pale pale a me nā ʻaʻahu insulation thermal; kaʻa uila a me ka mea hoʻololi hoʻololi; ke kūkulu ʻana i nā bearings sliding a me nā kākoʻo pipeline; kānana kemika a me ka hoʻopaʻa ʻana i ka valve i loko o nā kaiapuni corrosive. ʻO ka ikaika tensile kiʻekiʻe e hōʻoia i ka lōʻihi ma lalo o ka haʻalulu, ka haehae ʻana, ka hoʻoluliluli pinepine ʻana, a me ke koʻikoʻi mechanical wela kiʻekiʻe ma waena o kēia mau hana kaumaha.

I ka wā o ka sintering, hehee nā ʻāpana PTFE ma ka lole fiberglass ma luna o 327°C, e luku ana i nā lamellae i pelu ʻia a me nā palena ʻāpana e hana i ka hehee amorphous. Ma ka hoʻoluʻu ʻana, hoʻihoʻi hou ʻia ka PTFE i nā spherulites i haku ʻia me nā lamellae radially oriented, me ka crystallinity mai 50-70%. Hoʻoholo ka helu hoʻoluʻu i ka hemolele kristal: ʻoi aku ka nui o ka hoʻoluʻu ʻana i ka crystallinity, ʻoi aku ka nui o nā spherulites, ʻoi aku ka paʻakikī; ʻO ka hoʻopau wikiwiki e hāʻawi i nā spherulites maikaʻi a hoʻomaikaʻi i ka maʻalahi.

Hoʻohana nui ʻia ka lole fiberglass i uhi ʻia ʻo PTFE i ka hoʻoili ʻana i ka lāʻau no kona pale ʻana i ka wela, ka waiwai non-stick, a me ka friction haʻahaʻa. ʻO nā noi koʻikoʻi: e hoʻokuʻu i nā laina no ka hoʻoheheʻe ʻia ʻana o ka pā/vacuum a me ka hoʻowili ʻana i nā huila; nā kāʻei conveyor non-stick no nā wili hāmama, kalena, a me nā laina hoʻomaha; interleave i ka lole no ka hoʻopaʻa ʻana i ka lāʻau semi-hoʻopau; ka lawelawe kūikawā o ka silicone a me ka fluororubber; a me nā pā umu no ka hoʻōla ʻana. ʻO nā pōmaikaʻi, ʻo ia ka hoʻopau ʻana i ka hoʻopili ʻana i ka mold, hōʻemi i ka hoʻohana ʻana i ka mea hoʻokuʻu, pale i ka ʻōwili ʻana, a me ka hōʻoia ʻana i ka hoʻoheheʻe ʻana.

Haʻahaʻa sintering waiho PTFE unmelted, kumu micro-pores, ilihune adhesion, oolea surfaces, haʻahaʻa mechanical ikaika, a me ka milky helehelena. Hoʻohaʻahaʻa ka wela nui i ka PTFE, ka hana ʻana i nā pinholes, nā ʻūlū, brittleness, kala melemele-a-ʻeleʻele, a me nā uahi ʻawaʻawa. Hoʻopau nā mea ʻelua i ka compactness, non-stick performance, flexibility, insulation, a me ke kūpaʻa dimensional. ʻO ka laulā maikaʻi loa ʻo 370–400°C e hāʻawi i ka semi-transparent, maʻemaʻe, ka uhi ʻeleʻele. Nānā kiʻi: matte white = under-sintered; melemele/pilikia = over-sintered. (296 mau kaha)