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ʻO ka PTFE a me ka Silicone
ʻO nā silikoni, ʻike ʻia hoʻi he polysiloxanes, he mau polymers e komo pū ana me nā pūhui inert, synthetic i hana ʻia me nā ʻāpana hou o ka siloxane, ʻo ia ke kaulahao o nā ʻātoma silikona a me nā ʻātoma oxygen, i hui pinepine ʻia me ke kalapona a/a i ʻole hydrogen.He mea maʻamau lākou i ka wela a me ka rubber-like...Heluhelu hou aku -
Nā Huahana PTFE a me nā Mīkini / Mea Hoʻolako
ʻAʻole hiki ke wehewehe piha ʻia nā ʻāina ma muli o ka hoʻohana ʻana i nā lepili kūloko.Hāʻawi ke Keʻena ʻOihana Hoʻokele waiwai o New York State i ʻelua wehewehe ʻokoʻa o kēia mau ʻāpana;e hoʻokaʻawale i ka moku'āina i ʻumi mau ʻāpana waiwai, e pili ana i nā huaʻōlelo i hoʻohana ʻia e ka poʻe noho ...Heluhelu hou aku -
ʻO ka PTFE me ka ʻakika Perfluorooctanoic (PFOA)
ʻO ka waika Perfluorooctanoic (PFOA) (conjugate base perfluorooctanoate), i ʻike ʻia ʻo C8, he waika carboxylic perfluorinated synthetic a me ka fluorosurfactant.ʻO kekahi noi ʻoihana e like me ka surfactant i ka polymerization emulsion o nā fluoropolymers.Ua hoʻohana ʻia i ka hana ʻana i kēlā prom ...Heluhelu hou aku -
PTFE vs Rubber
He keʻokeʻo ka PTFE ma ke ʻano.No laila he hua'ōlelo redundant kēlā.ʻO nā ʻano polymer ʻē aʻe e like me FEP a me PFA ʻoi aku ka translucent;ʻaʻole keʻokeʻo.ʻOi aku ka palekana o ka PTFE ma mua o kāu elastomer automotive e like me neoprene a me EPDM.ʻO ia ka "ʻoi aku ka maikaʻi."E hoʻohaʻahaʻa maikaʻi ka Rubber ma mua o ka fluor...Heluhelu hou aku -
Pennsylvania PTFE Huahana & Mīkini Mea Hana / Mea Hoʻolako
He mokuʻāina ʻo Pennsylvania ma ka ʻaoʻao hikina ʻākau a me Mid-Atlantic o ʻAmelika Hui Pū ʻIa.Holo nā mauna ʻo Appalachian ma waena.ʻO ka Commonwealth ka palena ʻo Delaware i ka hikina hikina, ʻo Maryland i ka hema, West Virginia i ke komohana hema, Ohio i ke komohana, Lake Erie a me Cana...Heluhelu hou aku -
PTFE vs LDPE
ʻO ka polyethylene haʻahaʻa haʻahaʻa (LDPE) kahi thermoplastic i hana ʻia mai ka monomer ethylene.ʻO ia ka papa mua o ka polyethylene, i hana ʻia ma 1933 e Imperial Chemical Industries (ICI) me ka hoʻohana ʻana i kahi kaʻina hana kiʻekiʻe ma o ka polymerization radical manuahi.Manaʻo ka EPA he 5.7% o ka LDPE i hana hou ʻia.ʻOiai ka hoʻopili ʻana ...Heluhelu hou aku
