ʻO ka ulu ʻana o Polytetrafluoroethylene (PTFE) - mai kahi huahana niche i hoʻohana wale ʻia i nā noi waiwai nui a i kahi koi nui ua lohi loa.
Eia nō naʻe, i nā makahiki he iwakālua i hala iho nei, ua ʻike ʻia ua hala ka hoʻohana ʻana o ka PTFE i kahi nui koʻikoʻi, e ʻae ana iā ia e lilo i mea kūpono i ke kālepa ma mua o 200 mau noi ʻoihana, mea kūʻai aku a me nā lāʻau lapaʻau. A ʻoiai ʻo nā pepa, nā koʻokoʻo, nā uhi a me nā ʻāpana e hoʻopuni ana i ka hapa nui o ka mākeke no nā huahana PTFE, ke puka mai nei ka paipu PTFE a me ka hose PTFE ma ke ʻano he wahi ulu nui.
Nā noi paipu PTFE
ʻO ka hoʻohana ʻana oPaipu PTFEua pālahalaha ma nā ʻano hana like ʻole e pili ana i ke kaʻa, kemika, uila a me ka lāʻau lapaʻau. Hōʻike ka Papa 1 i nā waiwai koʻikoʻi e wehewehe ana i ka versatility o ka paipu PTFE, ʻoiai ʻo Fig 1 e hōʻike ana i kona hoʻohana ʻana ma nā ʻano like ʻole.
I nā noi kaʻa, ʻo ka hiki o PTFE ke kū i nā mahana ma mua o 250°C e lilo ia i moho kūpono no ka hoʻoili wai wela kiʻekiʻe.
Ma nā noi lapaʻau,Paipu PTFEhe mea nui ka makemake ʻia ma muli o kona lubricity a me ka inertness kemika. Hiki ke hoʻokomo ʻia nā catheters e hoʻohana ana i ka paipu PTFE i loko o ke kino kanaka me ka makaʻu ʻole i ka hopena a i ʻole ka abrasion me nā ʻāpana kino.
I nā noi kemika - me nā keʻena hoʻokolohua - he pani kūpono ʻo PTFE no ke aniani ma muli o kona inertness a me ka lōʻihi.
I nā noi uila, ʻo nā waiwai dielectric maikaʻi loa o ka PTFE puʻupaʻa e kūpono ia no ka hoʻokaʻawale ʻana i nā kaula uila kiʻekiʻe.
Nā ʻano o ka paipu PTFE
Ma muli o ke noi, ua māhele ʻia ka paipu PTFE i ʻekolu mau māhele ākea - kēlā me kēia i wehewehe ʻia e ke anawaena o ka paipu a me ka mānoanoa o ka paia (e ʻike i ka Papa 2).
ʻOiai i loko o nā māhele, hāʻawi ka paipu PTFE iā ia iho i nā ʻano like ʻole, e ʻae ana kēlā me kēia no kahi noi like ʻole (e nānā i ka Papa 3):
ʻO ka paipu PTFE ma ka mākeke lako lapaʻau
Ma keʻano laulā, hoʻohana ʻia ka ʻōmole spaghetti liʻiliʻi i nā noi lapaʻau. ʻO ka hoʻohana ʻana o PTFE ma kēia wahi e pili ana i ʻelua mau waiwai koʻikoʻi: ka lubricity a me ka biocompatibility. Hōʻike nā Fluoropolymers i ka lubricity maikaʻi loa i hoʻohālikelike ʻia me nā plastics ʻē aʻe. ʻO PTFE ka polymer lubricious loa i loaʻa, me ka coefficient of friction o 0.1, ukali ʻia e ka fluorinated ethylene propylene (FEP), me 0.2. Hōʻike kēia mau polymers ʻelua i ka hapa nui o nā ʻōmole fluoropolymer āpau i hoʻohana ʻia i nā mea lapaʻau.
He mea hopohopo maopopo ka biocompatibility o kekahi polymer i hoʻohana ʻia i loko o kahi mea lapaʻau. ʻOi aku ka maikaʻi o PTFE ma kēia wahi a he mōʻaukala lōʻihi kona o ka hoʻohana ʻana i loko o ke kino. Pono nā fluoropolymers papa lapaʻau e hoʻokō i nā koi hoʻāʻo USP Class VI a me ISO 10993. ʻOiaʻiʻo, he mea nui nō hoʻi ka maʻemaʻe o ka hana ʻana.
I nā makahiki he 18 i hala iho nei, ke hoʻomau nei ʻo Besteflon i ka hana ʻana i nā paipu PTFE a me nā hose PTFE. Ma ke ʻano he poʻe paionia ma ka ʻāpana o ka hana ʻana i nā fluoroplastics, ke alualu nei mākou i ka maikaʻi loa a me ka lawelawe ma hope o ke kūʻai aku. Inā makemake ʻoe e hoʻomaka e hoʻopilikino i ka paipu PTFE no kāu noi kūikawā, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou!
Ka manawa hoʻouna: Iune-12-2023