Ua hoʻomaka ka moʻolelo o POLYTETRAFLUOROETHYLENE ma ʻApelila 6, 1938 ma Du Pont's Jackson Laboratory ma New Jersey.I kēlā lā pōmaikaʻi, ua ʻike ʻo Kauka Roy J. Plunkett, ka mea e hana ana me nā kinoea e pili ana i nā mea hoʻoheheʻe FREON, ua ʻike ʻia kekahi laʻana i polymerised i kahi paʻa keʻokeʻo, waxy.
Ua hōʻike ʻia ka hoʻāʻo ʻana he mea kupaianaha loa kēia paʻa.He resin ia e kūʻē i nā mea kemika a i ʻole ka mea hoʻoheheʻe i ʻike ʻia;he pahee kona ili a aneane hiki ole ke pipili i kekahi mea;ʻAʻole i pehu ka makū, ʻaʻole ia i hoʻohaʻahaʻa a palupalu paha ma hope o ka loaʻa ʻana o ka lā i ka lā.He 327°C kona helu hehee a, e like me ka thermoplastics maʻamau, ʻaʻole ia e kahe ma luna o kēlā helu heheʻe.ʻO ia ke kumu e hoʻomohala ʻia nā ʻenehana hana hou e kūpono i nā ʻano o ka resin hou - ʻo Du Pont i kapa ʻia ʻo TEFLON.
ʻO nā ʻenehana hōʻaiʻē mai ka pauka metallurgy, ua hiki i nā mea ʻenekinia Du Pont ke hoʻopaʻa a hoʻopaʻa i nā resins POLYTETRAFLUOROETHYLENE i loko o nā poloka i hiki ke hana ʻia i kahi ʻano i makemake ʻia.Ma hope mai, ua hoʻopuehu ʻia ka resin i ka wai e ʻaʻahu i ka lole aniani a hana i nā enamels.Ua hana ʻia kahi pauka i hiki ke hoʻohui ʻia me kahi lubricant a hoʻokuʻu ʻia i ka uea a hana i nā paipu.
Ma 1948, 10 mau makahiki ma hope o ka loaʻa ʻana o POLYTETRAFLUOROETHYLENE, ke aʻo nei ʻo Du Pont i ka ʻenehana hana i kāna mau mea kūʻai.ʻAʻole i liʻuliʻu ua hoʻohana ʻia kahi mea kanu kalepa, a ua loaʻa nā resins POLYTETRAFLUOROETHYLENE PTFE i nā dispersions, nā resins granular a me ka pauda maikaʻi.
No ke aha e koho ai i ka hose PTFE?
ʻO PTFE a i ʻole Polytetrafluoroethylene kekahi o nā mea kemika kūʻokoʻa i loaʻa.ʻO kēia ka mea e hiki ai i nā paipu PTFE ke kūleʻa i loko o kahi ākea o nā ʻoihana kahi e hiki ʻole ai ke hāʻule nā hoses kuʻuna metala a i ʻole ka hao.E hoʻohui i kēia me ka pae wela maikaʻi loa (-70°C a i +260°C) a hoʻopau ʻoe me kahi paipu paʻa loa e hiki ai ke kū i kekahi o nā kaiapuni ʻoi loa.
ʻO nā waiwai frictionless o PTFE e ʻae i ka hoʻomaikaʻi ʻana i nā kahe kahe i ka wā e lawe ana i nā mea viscous.Hāʻawi pū kēia i kahi hoʻolālā maʻemaʻe maʻemaʻe a hana maoli i kahi liner 'non-stick', e hōʻoia ana i ke koena o ka huahana hiki ke holoi ponoʻī a holoi ʻia paha.
Ka manawa hoʻouna: Mar-24-2022