ʻO ka ETFE (a i ʻole Ethylene tetraflurorethylene) he plastic fluorine i hoʻolako ʻia me kahi helu heheʻe kiʻekiʻe a me kahi kemika maikaʻi loa, ka uila a me ka ikehu kiʻekiʻe o ka radiation resistance property.PTFE (a i ʻole polytetrafluroethylene) he paʻa fluorocarbon.Ke hana nei ma ke ʻano he hydrophobic, ʻaʻole wai a i ʻole nā mea wai i hoʻopaʻa ʻia i ka wai PTFE.Hoʻemi ʻo PTFE i ka friction, ʻaʻahu a no laila ka hoʻohana ʻana i ka ikehu o nā pamu e like me kekahi o nā coefficient haʻahaʻa o ka friction e kūʻē i kekahi paʻa.
ʻO nā mea maʻamau e hoʻohana ʻia no ka hoʻoikaika hou ʻana i ka paila he PTFE a me ETFE polymers.
Hoʻokumu ʻia ka PTFE mai ka carbon a me ka fluorine atom a ʻo ka ETFE i kūkulu ʻia mai ke kalapona, fluorine a me ka hydrogen.Hāʻawi i nā pono i ka hoʻohana ʻana i nā mea ʻelua.
Hiki ke ʻoi aku ka ikaika o ka tensile o ETFE ma mua o 38% ma mua o ka PTFE, ʻo ia hoʻi, hiki ke hoʻokō ʻia nā mea ETFE i nā kūlana hana ʻoi aku ka paʻakikī ma mua o kona hoa.
ʻO ia ke kumu i hoʻolako ʻia ai ka hapa nui o nā pamu kemika ma ETFE no ka mea he mea ikaika loa ia no ke kaʻina hana hoʻoheheʻe ʻia a lākou e hele ai.
Eia nō naʻe, aia ka PTFE i kahi ʻāpana o ka friction ma kahi hapakolu o ka ETFE e kūpono i ka wā e pono ai ke kahe kiʻekiʻe e like me ke kōkua ʻana e hōʻemi i ka friction paipu. ʻoiai hiki i ka ETFE ke piʻi i ka wela kiʻekiʻe o 267c.
He mea koʻikoʻi kēia pae i ke koho ʻana i ka pauma kūpono loa;inā hiki ke hoʻopili ʻia ka palapala noi ma kahi kokoke i kēia mau wela, ʻoi aku ka maikaʻi o ke koho ʻana i ka PTFE no ka mea ʻoi aku ka palupalu o nā mea ʻelua ma kahi kokoke i ko lākou mau kiʻekiʻe wela.
Eia kekahi, aia ka PTFE i ka Limiting Oxygen Index (ka haʻahaʻa haʻahaʻa haʻahaʻa o ka oxygen kahi e puhi ai ka polymer) ma mua o 95% aʻo ka ETFE ma waena o 30-36%, ʻo ia hoʻi e noʻonoʻo ʻia ʻo PTFE ma nā wahi oxygen kiʻekiʻe.
Ka manawa hoʻouna: Sep-11-2017