Hoʻopili kēia ʻatikala i ka helu helu helu ma waena o ka hakina gel a me ka ikaika cohesive i loko o nā mea hoʻopili koʻikoʻi koʻikoʻi silicone no ka lipine Teflon. ʻO ka hakina gel = pākēneka nui o ka ʻupena i hoʻopaʻa ʻia i hiki ʻole ke hoʻoheheʻe ʻia i loko o toluene (Hoʻoiho Soxhlet, 24hr). ʻO ka ikaika hoʻohui i hōʻike ʻia e ka mana paʻa kiʻekiʻe (180°C, 1kg). ʻEkolu mau pae: ma lalo o kahi koʻikoʻi (<60%) - ʻaʻohe pūnaewele percolating, paʻa i ka mana kokoke i ʻole; ka laulā kūpono (60-85%) - ulu nui ka ikaika cohesive me ka hakina gel, 60% → 70% hoʻonui i ka manawa paʻa mai nā minuke a i nā hola, 70% → 80% hāʻawi 3-10x hoʻonui; kiʻekiʻe crosslinking (> 85%) - loaʻa lohi (85% → 95% wale nō 20-50% piʻi), hāʻule nui ka tack, >95% nalowale nā ​​waiwai PSA.

Ke nānā nei kēia ʻatikala i nā hoʻololi i nā kaulahao molekala PTFE ma lalo o ka irradiation ultraviolet. ʻO ka ʻoki kaulahao nui a me ka hoʻohaʻahaʻa paona molekala: ʻO UV (254nm, 471 kJ/mol) e uhaki i nā mea paʻa CC (347 kJ/mol), ka homolysis, ka hoʻoulu ʻana i nā radical manuahi i hoʻopau ʻia e CF₂, ka hāʻule ʻana o ke kaumaha molekala, nalowale o ka paʻakikī a me ka elongation. ʻO nā ala hoʻololi manuahi manuahi: i loko o ka oxygen, hana ʻia nā radical peroxy, hoʻonohonoho hou i ka acyl fluoride (—COF) a me ka carboxylic acid (—COOH) hui hope, e hoʻokuʻu ana i ka COF₂ a me CO₂ (COF₂ hydrolyzes i HF); i nā lewa inert, ʻoi aku ka disproportionation/recombination, akā mau ka ʻoki kaulahao.

Hoʻopili kēia ʻatikala i ka hoʻohana ʻana i ka lole wela kiʻekiʻe ʻo Teflon i nā ʻāpana hoʻokaʻawale wela. ʻO ke kumu waiwai: ka lole fiberglass i uhi ʻia e PTFE, i ʻike ʻia ma ka aerospace e like me ka lole Beta, e hui pū ana i ka maʻalahi o ka lole me ka PTFE extreme-environment inertness. Ke kuleana: ka papa o waho loa o Thermal Micrometeoroid Garment (TMG) i nā ʻāpana mobility extravehicular, e kū pono ana i ka vacuum, nā ʻokoʻa wela kiʻekiʻe, a me nā micrometeoroids ma ke ʻano he pale kino/thermal mua no nā kiʻiʻoniʻoni aluminized i loko. ʻO ka palekana kaiapuni koʻikoʻi: kū i ka -200 ° C a + 260 ° C ka laulā (ke alo o ka lā> 120 ° C i ke aka -160 ° C); ʻO ka ʻili keʻokeʻo e hōʻike ana i ka radiation lā; pale i nā kiʻiʻoniʻoni polyimide aluminized palupalu mai nā ʻōpala a me nā waimaka. Kōkua ka neʻe ʻana: ʻo ka ʻili PTFE haʻahaʻa haʻahaʻa e pale i ka ʻili ʻana o ka papa i ka wā e kulou ana, e hōʻoia ana i ka hiki ke hoʻololi ʻia ʻo EVA.

Hoʻopili kēia ʻatikala i nā pono noi o Teflon lole wela kiʻekiʻe i ka hoʻomaloʻo ʻana i ka pā uila lithium. Hoʻohana ʻia e like me nā kāʻei conveyor a i ʻole nā ​​​​laina umu, e hoʻonā i nā pilikia koʻikoʻi ʻekolu: slurry adhesion, corrosion, a me electrode scratching. ʻEhā mau wahi maikaʻi: ʻO ka maikaʻi o ka electrode a me ka hua - nā mea anti-stick e pale ai i ka PVDF binder adhesion e hiki ai i ka peeling piha maʻalahi; ʻAʻole ka haʻihaʻi ʻana o ka thermal conductivity ma 100-140 ° C; ʻO ka ʻili pahee e hoʻopau i nā ʻōpala a me ka pauka; ʻO ke kūpaʻa a me ka paʻa o ka hana - ke kūʻē ʻana i nā mea hoʻoheheʻe NMP a me nā mahu electrolyte me ka ʻole o ka pehu ʻana a me ka ʻelemakule; ka ikaika tensile kiʻekiʻe a me ke kūpaʻa dimensional mai ka fiberglass substrate no ke kūlana pololei; hoʻomaʻemaʻe maʻalahi me ke koena liʻiliʻi e hoʻohālikelike ʻia me nā kāʻei mesh mesh.

Hoʻopili kēia ʻatikala pehea e hoʻohālikelike ai i ka mahana decomposition a me ka hapalua o ke ola o nā mea hoʻohui crosslinking peroxide (BPO a me DCP) me ka puka aniani kaʻina hana no ka lipine Teflon. ʻIkepili kumu: BPO - 1-min ka hapalua o ke ola ma ~131 °C, 1-hr ma ~92°C, 10-hr ma ~72°C; DCP — 1-min ma ~171°C, 1-hola ma ~135°C, 10-hola ma ~115°C. Manaʻo like ʻole: pono ka hoʻopili 97-99% crosslinking = 5-7 hapalua ola; manawa ho'ōla = 5-7 × hapa-ola ma ka wela wela. E helu hope i ka mahana mai ka manawa noho laina hana a i ʻole ka helu hope i ka manawa mai ka wela kiʻekiʻe i ʻae ʻia.

Hoʻopili kēia ʻatikala i ka laina wikiwiki laina maʻamau no ka PTFE kiʻekiʻe-mehana lole impregnation laina hana. ʻO ka wikiwiki maʻamau: 2-15 m / min, ka pae hana paʻa 3-8 m / min, nā lole lahilahi / nā laina kiʻekiʻe a hiki i ka 10-15 m / min. 'O nā pilikia mai ka komo 'ana i ka impregnation: pono e ho'opiha piha 'ia ka lole me ka emulsion PTFE i loko o ka pū'olo fiber i loko - 'o ke ki'eki'e ki'eki'e ke kumu i lawa 'ole ai ka impregnation, ka pololi resin a me ka pulu maloo; ʻO ka viscosity emulsion, ka hoʻopaʻa paʻa, ka nui o ka ulana lole e hoʻemi ana i ka helu komo ʻana, e koi ana i nā māmā māmā no nā lole mānoanoa. Kaʻaʻaʻahu: pono nā pā he nui (2-6+) no ka uhi ʻole ʻana o ke kīnā ʻole; ʻoi aku ka mālie o ka hele mua ʻana no ka heleuma ʻana, hiki ke hoʻonui ʻia nā hala ma hope.

Hoʻohālikelike kēia ʻatikala i nā ʻokoʻa ma waena o ka hoʻomehana ʻana o ka radiation infrared a me ka hoʻoheheʻe ʻana i ka ea wela ma ke ʻano like ʻole o ke ʻano o ke ʻano o ka ʻāpana silicone. ʻO nā hana hoʻoili wela: ʻo ka convection-conduction ka ea wela, mālie a holomua, e hana ana i ka gradient mahana; ʻO ka IR ka hoʻoheheʻe ʻana i ka radiation me ka hoʻomoʻa ʻana o ka ʻili ikaika (micrometers a millimeters) e hana ana i ka ʻanuʻu pali a i loko. Nā hopena i ka puʻunaue like ʻana o nā loulou: ʻae ka ea wela i nā ʻāpana o loko a me waho e komo i ka pae wela vulcanization kokoke i ka manawa like, e hāʻawi ana i ka mānoanoa crosslink like ʻole me ka mānoanoa; Hoʻōla koke ʻo IR i ka ʻili o ka ʻili e keʻakeʻa ana i ka hoʻololi ʻana i ka wela, e hoʻemi ana i ka gradient ʻoi o ka crosslink density mai ka ʻili i loko.

Hoʻopili kēia ʻatikala i nā kikoʻī silica a me nā hiʻohiʻona noiʻi o ka lole aniani kiʻekiʻe silica fiber. ʻO ka kikoʻī kikoʻī silica: ʻo ka mea hōʻailona koʻikoʻi ʻo SiO₂ ≥96% (maʻamau 96-98%, nā helu premium> 99% ma o ka leaching acid a me ka sintering, e hoʻokokoke ana i ka fiber quartz maʻemaʻe). Hana ʻia: E hoʻoheheʻe ʻia ka waikika wela e hoʻoheheʻe i nā ʻāpana non-silica (boron oxide, sodium oxide), hana i ka iwi porous kiʻekiʻe-silica, a laila hoʻopaʻa ʻia no ka densification. ʻO nā pōmaikaʻi kumu: ka lawelawe mau ʻana ma 900 ° C i nā ea oxidizing, pōkole ma luna o 1200 ° C, kahi palupalu kokoke i 1700 ° C; paʻa kemika i ka hapa nui o nā ʻakika/alkali koe wale ka HF a me ka waika phosphoric wela; haʻahaʻa dielectric mau a paʻa insulation ma kiʻekiʻe wela.

Hoʻopili kēia ʻatikala i ka hanana delamination o ka lole wela wela ʻo Teflon. ʻO ka Delamination e pili ana i ka hoʻokaʻawale ʻana a me ka ʻili ʻana ma waena o ka uhi ʻana o ka PTFE a me ka lole kumu fiberglass kūloko a i ʻole ma waena o nā papa uhi he nui. Nā hōʻike ʻike maka: ʻōhū/puʻi (nā ʻōpū i hoʻāla ʻia me ka manaʻo hollow) ma ke ʻano he hōʻailona mua; ka ʻili ʻana o ka interlayer me ka uhi maʻalahi e wehe ʻia i nā lau e hōʻike ana i ka fiberglass keʻokeʻo; ʻo ka hoʻomaʻemaʻe kūloko i ukali ʻia e ka flaking ma hope o ka wela/friction. Nā kumu nui: ʻO ka pōʻino koʻikoʻi wela - ʻokoʻa nā koena hoʻonui wela ma waena o PTFE a me fiberglass e hana i ke koʻikoʻi o loko, nā pōʻai hoʻomehana/hoʻoluʻu wikiwiki e hoʻokaʻawale; ʻO nā hemahema o ka maikaʻi o ka hana ʻana - lawa ʻole ka mālama ʻana i ka fiberglass surface, ʻilihune PTFE impregnation, lawa ʻole ka sintering e hoʻonāwaliwali ai i ka pilina interfacial.

Hōʻike kēia ʻatikala i nā hiʻohiʻona microstructural o Teflon lole wela kiʻekiʻe. Ka iwi lepo: ka ulana aniani puluniu ulana lole ma ka laula/twill me ka porosity kiʻekiʻe (micron-scale pores i loko o ka pulupulu pulupulu a me ka warp-weft nodes) e hoolako ana i wahi no ka PTFE impregnation. ʻO ka morphology uhi: piha impregnation encapsulation e hoʻokumu ana i ka ʻano 'reinforced concrete' kahi e hoʻoikaika ai nā fiber aniani i ka pae, PTFE mau matrix; ʻO ka nodular microstructure o nā nodules (particles) i hoʻopili ʻia e nā fibrils maikaʻi i hana ʻia i ka wā sintering; ʻO ka ʻili ʻili paʻa mau (he mau ʻumi o nā microns mānoanoa) o ka PTFE maʻemaʻe ma ke ʻano he pale kī no ka inertness kemika, nā waiwai non-stick, a me ka insulation uila.