ʻO Polytetrafluoroethylene a i ʻole PTFE (i ʻike nui ʻia he polymer) he ʻelepani-keʻokeʻo a me ka fluoropolymer plastic opaque;hana ʻia e ka polymerisation free-radical o nā molekala tetrafluoroethene he nui, a kūpono ia no ka nui o nā noi i nā ʻoihana like ʻole e like me ka aerospace, ka meaʻai a me ka ʻoihana inu, nā lāʻau lapaʻau a me nā kelepona.
Hana ʻia e AFT Fluorotec i loko o nā koʻokoʻo a i ʻole nā paipu o kēlā me kēia nui, a i hoʻopiha ʻia me ke aniani, carbon, stainless steel a i ʻole nā mea ʻē aʻe he nui e hoʻonui ai i ka pale ʻana a me ka ikaika, ʻo kēlā me kēia mea āu e hana ai a kūkulu paha, maopopo mākou e loaʻa i kahi mea e hana no ʻoe. .
NĀ WAIWAI NUI O PTFEInā ʻoe e hoʻāʻo nei e hana i kahi mea maʻalahi loa, kūpaʻa kemika, pale wela, ʻaʻole lāʻau a me ka uila, a ʻaʻole i hana ʻia, manaʻolana ʻoe e hiki iā ʻoe ke loaʻa i kahi mea ma kahi. ʻaneʻane maikaʻi e like me ka PTFE ma kēia mau wahi.
ʻO ka helu heheʻe o PTFE ma kahi o 327 ° C, a ʻo ka PTFE maʻemaʻe ʻaneʻane kemika inert, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka hapa nui o nā mea hoʻoheheʻe a me nā kinikona, a me ka thermally paʻa e hoʻohana ʻia ma waena o -200 degere C a me +260 degrading C me ka hoʻohaʻahaʻa ʻole.
ʻO nā waiwai PTFE maikaʻi ʻē aʻe kona ikaika flexural kiʻekiʻe, ʻoiai i nā haʻahaʻa haʻahaʻa, ke kūpaʻa uila kiʻekiʻe a me ka ikaika dielectric, kūʻē i ka wai (ma muli o ka electronegativity kiʻekiʻe o ka fluorine), a me ka coefficient haʻahaʻa o ka friction.He kiʻekiʻe loa ka mānoanoa o PTFE, ma 2200 kg/m3.
ʻO ka ʻoiaʻiʻo, ma waho aʻe o ka pane ʻana i kekahi mau mea kemika a me nā solvents (no ka laʻana, chlorine trifluoride, cobalt(III) fluoride, xenon difluoride a i ʻole fluorine elementary inā ma ke kaomi kiʻekiʻe a me ka mahana), ʻo ka mea wale nō e noʻonoʻo ʻia i ka wā e hoʻohana ai i ka PTFE. ʻaʻole maikaʻi ke kū'ē i ka pāhawewe ikehu kiʻekiʻe, ka mea e hoʻopau ai i ka mole mole PTFE.
HOʻOPIʻI ʻia nā waiwai PTFE Ma waho aʻe o ka PTFE maʻemaʻe, aia ʻelua co-polymers i like like me ka pono e like me ka PTFE, akā me kekahi mau waiwai ʻokoʻa.
ʻO ka PFA a i ʻole ka Perfluoroalkoxy he mau waiwai like loa me ka PTFE no ka mea, he kūpaʻa kemika, ʻoluʻolu a me ka thermally stable (me ka hoʻohana mau ʻana a hiki i 260 degere C), akā ʻoiai ʻo ka PTFE e kolo ana, ua kolo ʻo PFA a maikaʻi loa no ka. ka hoʻoheheʻe ʻana, ka hoʻoheheʻe ʻana, ka extrusion, ka hoʻoheheʻe ʻana, ka hoʻoheheʻe ʻana, a me ka hoʻololi ʻana.
ʻO TFM, i kapa ʻia ʻo PTFE-TFM, he polytetrafluoroethylene me perfluoropropylvinylether ma ke ʻano he mea hoʻololi hou, e hāʻawi ana i kahi mea ʻoi aku ka ʻoi aku ka ʻoi aku o ka ʻoi aku o ka ʻoi aku ka ʻoi aku o ka ʻoi aku o ka ʻoi aku ka ʻoi aku o ka ʻoi aku o ke koʻikoʻi, a me ke kolo ʻana e like me ka PFA, a hiki ke weldable.FILLED PTFEPure a i ʻole PTFE puʻupaʻa hiki ke hoʻololi maikaʻi ʻia ma lalo o kahi haʻahaʻa, akā hiki i ka hoʻohana ʻana i nā mea hoʻopihapiha ke kōkua i kēia, ʻoiai pono e hoʻomaopopo ʻia ʻaʻole kūpono nā PTFE piha i ka meaʻai.
Hiki i ka hoʻohui ʻana i kahi mea hoʻopiha i ka PTFE ke hoʻonui i kona ikaika, hoʻomaikaʻi i ke kūʻē ʻana i ka abrasion, hoʻohui i ka conductivity uila a me nā mea hou aku;akā naʻe, hiki i ka hoʻohui ʻana i nā mea hoʻopihapiha ke hōʻemi i kekahi o nā waiwai PTFE maikaʻi, e like me ke kūpaʻa kemika e kaupalena ʻia e ka mea hoʻopihapiha.
Hiki ke hoʻohana ʻia nā mea hoʻopihapiha mai ke aniani i nā pākēneka like ʻole, ke kila kila, molybdenum disulphide, carbon a i ʻole graphite, e hilinaʻi ana i nā waiwai e hoʻomaikaʻi ʻia.
KA PONO A ME KA PONO O KA HOʻohana ʻana i ka PTFE ʻO ka pōmaikaʻi nui loa o ka PTFE ʻo ia ka versatility, a ʻo ke ʻano o nā noi ma luna o nā huahana he nui a me nā ʻoihana like ʻole no kēia mea.
Hiki i ka hoʻohana ʻana i ka PTFE ke loaʻa nā pōmaikaʻi nui i ka hana ʻana a me ka ʻenekinia, ʻaʻole wale i ka hana ʻana i nā paipu a i ʻole nā liners no ka mālama ʻana a mālama ʻana i nā kemika corrosive, akā ma ka uhi ʻana i nā ʻāpana e like me nā bearings a i ʻole nā wili e hoʻonui ai i ke ola o nā ʻāpana ʻelua a me nā mīkini. hapa o.
ʻO ka wili PTFE i uhi ʻia e kūpaʻa i ka corrosion, ma muli o ka hiki i ka PTFE ke hoʻokuʻu i ka wai a me ka ʻaila, a lubricated e ka mea e holo mālie ai i kēlā me kēia ʻili āu e hoʻopaʻa nei, me ka hoʻohaʻahaʻa ʻana i ka friction, e hōʻemi ana i ka ʻaʻahu ma luna o ka wili a me ka wili. ka ʻili, a me ka hoʻopau ʻoi aku ka palekana.
ʻO ka friction a me ka lole hiki ke lilo i mau kumu me nā bearings, a hiki i ka ʻaʻahu PTFE ke hāʻawi i nā pono like e like me ka uhi ʻana i nā screws, me ka ʻoi aku ka maikaʻi o ka pale ʻana i ka wela.
ʻIke ʻia ʻo nā ʻāpana ʻoi aku ka lōʻihi o ka hana kiʻekiʻe e hiki ke hoʻohui i ka pono o kēlā me kēia mīkini, e hōʻemi i ka pono e loaʻa mau i nā ʻāpana pani, ʻo ka mālama kālā a me ka manawa e pono ai e kūpono i nā pani, a me ka hoʻemi ʻana i ka ʻōpala.E hōʻemi ana kēia i nā pono o ka mālama ʻana no ka mea ʻoi aku ka liʻiliʻi o nā hemahema o nā mea hana, a e hōʻemi nui ʻia, a i ʻole e hoʻopau paha, i ka manawa hoʻomaha o ka hana ʻana ma muli o nā hewa a i ʻole ka hoʻoponopono ʻana.
Hiki ke ho'emi 'ia ka ho'oma'ema'e 'ana i nā mea hana i kekahi mau hihia no ka mea, 'a'ole pulu ka lole PTFE, ho'oma'ema'e iā ia iho.
A hiki i ka polymer textile hoʻopau ke kōkua i ke kaiapuni, no ka mea, i ka wā e hoʻopili ai i ka lole, e hoʻopau ka hopena i ka wai a me ka ʻaila, e hōʻemi ana i ka pono e hoʻohana i ka hoʻomaʻemaʻe maloʻo, a e maloʻo wikiwiki hoʻi nā lole, me ka hoʻohana ʻana i ka ikehu me ka hoʻomaloʻo ʻana, a ʻoi aku ka lōʻihi ma muli o ka emi ʻana o ka lole.
Me nā pōmaikaʻi i hoʻohui ʻia ʻo PTFE he mea ʻawaʻawa ʻole, loaʻa wale kahi contraindication liʻiliʻi no nā kānaka mai ka polymer fume fever (inā wale nō ka mahana o nā pans polymer-coated a hiki i 260 degere C) a ua ʻae ʻia ʻo FDA a palekana i ka meaʻai, ʻo kēia mea maoli. he pomaikai nui ma na wahi like ole.Hoʻohana hoihoi ʻia o PTFEA a me ka uhi ʻana i nā mea āpau mai ka pans a hiki i nā bearings, hoʻohana ʻia ʻo PTFE e hoʻōki i ka piʻi ʻana o nā paia no ka mea ʻaʻole hiki ke hoʻopaʻa ʻia ka mea i hiki ʻole i nā iniseti (a me nā geckos) ke hopu. he uhi ma luna o nā catheters e kāohi i ka bacteria a me nā maʻi maʻi a hoʻohana ʻia hoʻi ma ke ʻano he mea grafft i ke ʻoki ʻana.
Oe e i lohe o Gore-Tex, a he PTFE hou, keia manawa e like me ka lahilahi, porous membrane e hana breathable ua lole, ai ole ia, no ka lapaʻau implants, uwea insulation a me sealants.
Me ka hoʻomanaʻo ʻana ua ʻike ʻia ʻo PTFE e ka pōʻino hauʻoli i ka makahiki 1938, paʻakikī ke noʻonoʻo i ko mākou honua i kēia lā me ka ʻole o ia.
Inā makemake ʻoe i ka hoʻohana ʻana i ka PTFE no kekahi o kāu mau papahana, a inā makemake ʻoe e ʻike hou aʻe e pili ana i nā waiwai o PTFE, e ʻoluʻolu e hoʻopili a hauʻoli mākou e kamaʻilio iā ʻoe ma kāu mau koho.
Ka manawa hoʻouna: Mei-30-2020