ʻO ka PTFE kiʻekiʻe-mehana lole (PTFE-coated fiberglass) he mea kānana kānana maikaʻi no nā kūlana koʻikoʻi: ka hoʻohemo ʻana i ka lepo (cement, waste incineration, coal boilers a hiki i 260 ° C), corrosive wai kānana (acids, alkalis, aila), meaʻai / lāʻau hoʻomaʻemaʻe sterile kānana, a me HEPA cleanroom kānana. ʻAʻole hiki ke hoʻomaʻemaʻe maʻalahi ka ʻili non-stick. Loaʻa i nā māka membrane-laminated nā hoʻokuʻu haʻahaʻa loa.

PTFE kiʻekiʻe-mehana lole mālama maikaʻi uila insulation mai -180 ° C a hiki i 260 ° C: volume resistivity>10¹³ Ω·cm ma 200 ° C, dielectric paʻa paʻa ma 2.0-2.1. Ma luna o 260 ° C, PTFE palupalu, decomposes ma luna o 327 ° C, nalowale insulation mau loa. Ma lalo o 0 ° C, hoʻomaikaʻi ka insulation akā lilo ka uhi i palupalu. Noho i loko o 260°C no ka hana pono.

ʻO ka lole wela kiʻekiʻe o ka PTFE (PTFE-coated fiberglass) he mea kūpono ia no nā kāʻei conveyor meaʻai ma muli o kona kūpaʻa wela 260 ° C, -70 ° C hiki ke anuanu, non-stick surface, a me ka FDA compliance. Nā mea nui: nā umu bakena (biscuits, berena, pizza), nā mea lawe meaʻai palai, nā laina hoʻoluʻu candy, nā tunnels maloʻo, nā sila wela, a me ka ʻōwili wili. Hoʻemi i ka pau ʻole a me ka manawa hoʻomaʻemaʻe.

Kalendering - kaomi ʻana i ka lole i uhi ʻia i ka PTFE ma waena o nā wili aniani wela ma 360-380 ° C - hoʻololi nui i ka morphology ili, hoʻokuʻu i nā waiwai, impermeability, a me ka hana mechanical. Hoʻemi ia i ka roughness mai Ra 0.5-1.0 μm a i <0.05 μm, hoʻopaʻa i nā pinholes, hoʻomaikaʻi i ka pale ʻana, akā hoʻemi i ka ikaika o ka waimaka a me ka maʻalahi. Pono no ka hoʻokuʻu ʻana i nā liner a me ka hoʻokaʻawale uila.

Hoʻoholo ʻia ka like ʻana o ka uhi ʻana o ka lole wela kiʻekiʻe PTFE e nā kumu ʻehā: ka hoʻokumu ʻana o ka uhi (ka nui o ka particle 0.15-0.35 μm, viscosity, solid content), ka uhi ʻana a me ke kaʻina hana sintering (makemake ʻia ka uhi ʻana no ka like ʻole), ka maikaʻi o ka substrate (weave pattern, pre-treatment), a me ke kaiapuni hana (20-25% R, <60). ʻO ke kaʻina hana hoʻohui ʻia ʻo Dip + blade e kaulike i ke komo ʻana a me ka maʻalahi o ka ʻili.

Hoʻohana ʻia ka lole kiʻekiʻe PTFE a me ka lole silikoni i ka lole fiberglass ma ke ʻano he kumu akā ʻokoʻa i nā mea uhi (PTFE resin vs silicone rubber). Ua ʻoi aku ka maikaʻi o ka PTFE i ka lāʻau ʻole, ka pale ʻana i ka ʻaʻahu, a me ke kūpaʻa kemika a hiki i 260°C. Hāʻawi ka lole silikoni i ka maʻalahi, ka hoʻokaʻawale uila, a me ke kūpaʻa ahi (a hiki i 230 ° C). E koho ma muli o kāu mea nui.

Hāʻawi ka PTFE kiʻekiʻe-mehana lole i ke kūʻokoʻa kemika, kū i nā waikawa ikaika, alkalis, nā mea hoʻoheheʻe organik, a me nā kinoea corrosive. Hōʻike kēia ʻatikala i kāna mau mea kūʻokoʻa, nā palena (nā metala alkali hoʻoheheʻe, nā mea hana fluorinating ikaika), a me nā mea nui e like me ka mahana, ka noʻonoʻo, a me ke koʻikoʻi mechanical.

ʻAʻole i kaupalena ʻia ka impregnation PTFE i ka lole fiberglass. Hōʻike kēia ʻatikala i nā substrate ʻē aʻe 7 - aramid, carbon fiber, PBI, porous metal, graphite, asbestos (phased out), a me nā mea hoʻopiha ceramic - me kā lākou mau hiʻohiʻona kaʻina, nā pono, nā palena, a me nā noi nui.

Hōʻike kēia ʻatikala i ke kumu o ka lole fiberglass alkali-free ka substrate makemake no ka lole wela kiʻekiʻe PTFE. Uhi ia i ka hoʻopaʻa kemika ma o nā mea hoʻopili silane a me nā waiwai kino koʻikoʻi e like me ke kūpaʻa wela, ke kūpaʻa dimensional, a me ka pale ʻana i ka corrosion - e hōʻoiaʻiʻo ana i ka hana lōʻihi i nā wahi paʻakikī.