No ka mea ua ʻoi aku ka koʻikoʻi o ka nui o nā ʻoihana me nā mahana kiʻekiʻe, nā wahi ʻino, nā kaomi kiʻekiʻe, etc.Polytetrafluoroethylene (PTFE) hāʻawi i ka manawa e holo ai i nā RPM kiʻekiʻe, nā mahana kiʻekiʻe a me nā haʻahaʻa haʻahaʻa, a ʻoi aku ka kiʻekiʻe ma mua o kahi sila elastomeric.
ʻO kēia ma muli o ka PTFE he mea inert, hoʻomohala ʻia e kū i ka wela koʻikoʻi, he haʻahaʻa haʻahaʻa o ka friction, a i ka hui pū ʻana me nā mea hoʻopihapiha koho, hāʻawi ʻo PTFE i nā hiʻohiʻona ʻokoʻa a me nā mea mechanical ʻē aʻe i hiki ʻole i nā sila elastomer.
ʻOi aku ka palekana o ka PTFE ma mua o ka PEEK.ʻOi aku ka palupalu a no laila ʻoi aku ka liʻiliʻi o ka ikaika pipili no ka hoʻokō ʻana i kahi sila, akā ke kolo nei nō hoʻi i kahi mahana haʻahaʻa haʻahaʻa ma mua o ka PEEK.He paheʻe nō hoʻi - ʻo ka haʻahaʻa haʻahaʻa o ka friction, ʻo ia ka mea hiki i nā ʻāpana ke hoʻoheheʻe ma mua o kekahi i kahi maʻalahi, e hopena i ka torque haʻahaʻa i nā noi seal rotating etc.
ʻO PEEK kahi polymer paʻakikī, paʻa, ʻoʻoleʻa.He pipiʻi.He kūpaʻa nō hoʻi i nā wela kiʻekiʻe.Hoʻohana maʻamau ʻoe i kahi PTFE a i ʻole TFE i hoʻoikaika ʻia e mālama ʻole i ka wela.
He pololei ka moltenmetal, ʻaʻole PEEK a i ʻole (paʻa) PTFE he elastomers, he mau polymers thermoplastic.
Loaʻa i ka PEEK ka ikaika mechanical maikaʻi loa, ke kiʻekiʻe o ka mahana wela, ka hoʻopili kemika, a me ke kūpaʻa ʻana.Loaʻa i ka PTFE ka haʻahaʻa haʻahaʻa haʻahaʻa / kiʻekiʻe kiʻekiʻe o ka wela, nā waiwai friction haʻahaʻa, a me ka inert kemika.Hiki ke hana ʻia nā mea ʻelua e ka mīkini a i ʻole ka hana ʻana.ʻOi aku ke kumu kūʻai o ka PEEK ma mua o ka PTFE ma ke kumu kūʻai kumu kūʻai kumu $/lb, akā ʻo ka hapa nui o nā noi sila e koi aku i nā mea haʻahaʻa haʻahaʻa inā hoʻohana ʻia ke kālai ʻia e hana i ka mea sila.No nā noi sila hoʻokō kiʻekiʻe, ʻaʻole pono e hopohopo nui ka ʻokoʻa kumu kūʻai maka.Akā no kahi noi huahana kiʻekiʻe, haʻahaʻa haʻahaʻa hiki iaʻu ke ʻike i kahi e pilikia ai.
No ka hoʻohana ʻana i ke sila hoʻoikaika kino, inā ʻaʻole kiʻekiʻe nā kaomi, he koho maikaʻi paha ʻo PTFE no ka mea he maikaʻi kona friction a me nā ʻano conformability.ʻO kahi mea maikaʻi loa e pili ana i kahi sila PTFE e holo ana i kahi ʻili metala ʻo ia ka manawa e hoʻoneʻe ʻia kahi papa o PTFE i ka ʻili metala, kahi e hoʻopili ai i kahi pilina PTFE-on-PTFE me ka haʻahaʻa haʻahaʻa a me ka leakage.ʻO ka palena nui hoʻokahi o ka hoʻohana ʻana i ka PTFE i hoʻopiha ʻole ʻia no ka hoʻopaʻa ʻana i ke kaomi ʻana, ʻo ia ke ʻano o ke kahe anuanu ke ʻike ʻia i ka paʻi paʻa i nā manawa lōʻihi.
ʻO ka ETFE kahi thermoplastic paʻa.ʻO ka FEP fluorinated ethylene propylene) he thermoplastic paʻa, ʻoiai ʻoi aku ka palupalu ma mua o PFA a i ʻole PTFE- ʻaʻole ia he elastomer.Polytetrafluoroethylene-co-propylene (Aflas) mea he elastomer, e like me ka typical fluoroelastomer (tradename Viton- (FKM)) a me perfluoroelastomers like tradename Kalrez (FFKM).Hiki ke hoʻohana ʻia nā mea a pau i ka hoʻopaʻa ʻana i nā noi (packing a, gaskets, valve seats) akā hiki ke hoʻohana ʻia nā elastomers i nā sila hoʻoikaika ponoʻī e like me nā apo.Hiki ke hoʻopili ʻia nā apo me nā mea nonelastomeric akā hiki ke hoʻopilikia i ko lākou hiki ke hoʻopaʻa i ke kinoea.
Ka manawa hoʻouna: Feb-27-2017