ʻO ka EPDM rubber no ka thermoset elastomers (rubber) classification, aʻo PTFE no ka thermoplastics.E ʻoluʻolu e hoʻomaopopo he ʻano like ʻole nā mea ʻelua.
ʻO ka ʻōpala EPDM kahi mea elastomer thermoset a i ʻole mea lāʻau.He haʻahaʻa haʻahaʻa kona ʻano a me ka wela wela kiʻekiʻe e pili ana i nā mea lāʻau ʻē aʻe.
ʻO ka PTFE he fluoroplastic (fluorine-based thermoplastic).Hiki iā ia ke loaʻa ke kiʻekiʻe kiʻekiʻe ma waena o nā thermoplastics.Eia kekahi, hiki iā ia ke loaʻa ka ductility kiʻekiʻe a me ka ikaika haʻahaʻa haʻahaʻa.
ʻOi aku ka palupalu o ka EPDM a hana i kahi mea hoʻopaʻa sila ʻoi aku ka maikaʻi (ʻoi aku ka maikaʻi o ka hoʻopau ʻana o ka ʻili.ʻOi aku ka ʻoi aʻe o ka polymer a slicker, ʻoi aku ka maikaʻi o ka paʻa ʻana i kahi noi ikaika a abrasive paha.Hiki i nā mea ʻelua ke mālama iki i ka wai kai mai kahi ʻano hoʻouka kemika/corrosion.
ʻO ka mahana decomposition o PTFE he> 490 ° C (> 910 ° F) a ʻo nā huahana decomposition nui he hydrogen flouride kinoea (ʻoi loa ka corrosive) a me carbon dioxide.ʻAʻole kūpono ia no ka hoʻohana ʻana i kahi e hoʻopili ai me ka acetone a i ʻole nā noi alkaline wela.
Inā makemake ʻoe i nā ʻāpana e hoʻopaʻa i ka hoʻohana ʻana i ka EPDM a i ʻole Natural rubber, ʻaʻole e sila maikaʻi nā mea PTFE.ʻOi aku ka paʻakikī, akā ʻoi aku ka lōʻihi a ʻoi aku ka nui o ke kumukūʻai akā ʻaʻole ia e sila e like me ka elastomer.
PS: E hoʻokaʻaʻike mai iā mākou no ka laʻana manuahi ʻole o nā huahana PTFE
Ka manawa kau: Aug-01-2017