ʻOiai ʻo PTFE (polytetrafluoroethylene) aePTFE(polytetrafluoroethylene hoʻonui) loaʻa ke kumu kemika like, loaʻa iā lākou nā ʻokoʻa koʻikoʻi i ka hoʻolālā, hana a me nā wahi noi.
ʻO ke kinona a me nā waiwai kumu
ʻO ka PTFE a me ka ePTFE he polymerized mai nā monomer tetrafluoroethylene, a loaʻa iā lāua ke ʻano kemika (CF₂-CF₂)ₙ, ʻo ia ka mea inert kemika nui a kū i nā wela kiʻekiʻe. Hoʻokumu ʻia ka PTFE e ka sintering kiʻekiʻe, a ua hoʻonohonoho pono ʻia nā kaulahao mole e hana i kahi ʻano paʻa, ʻaʻole porous. Hoʻohana ʻo ePTFE i kahi kaʻina hana hoʻolōʻihi kūikawā e hana ai i ka PTFE fiberize i nā wela kiʻekiʻe e hana i kahi ʻōnaehana porous mesh me kahi porosity o 70% -90%.
Hoʻohālikelike i nā waiwai kino
| Nā hiʻohiʻona | PTFE | ePTFE |
| ʻO ka mānoanoa | Kiʻekiʻe (2.1-2.3 g/cm³) | Haʻahaʻa (0.1-1.5 g/cm³) |
| ʻO ke kūpale | ʻAʻohe permeability (paʻa loa) | Hiki ke kiʻekiʻe (ʻae nā micropores i ka hoʻopuehu kinoea) |
| ʻoluʻolu | Paʻakiki a palupalu | ʻO ka maʻalahi a me ka elasticity kiʻekiʻe |
| Ka ikaika mīkini | Kiʻekiʻe compressive ikaika, haʻahaʻa waimaka kū'ē | Ua hoʻomaikaʻi nui ʻia ka pale ʻana i ka waimaka |
| Porosity | ʻAʻohe pores | Hiki i ka porosity ke hiki i 70% -90% |
Nā hiʻohiʻona hana
●PTFE: He kemika inert a kū'ē i nāʻakika ikaika, alkalis ikaika a me nā mea hoʻoheheʻe organik, loaʻa ka mahana wela o -200 ° C a +260 ° C, a he haʻahaʻa haʻahaʻa haʻahaʻa (e pili ana i 2.0), kūpono ia no ka insulation kaapuni kiʻekiʻe.
● ePTFE: Hiki i ka microporous structure ke hoʻokō i nā waiwai wai a me ka hanu (e like me ke kumu Gore-Tex), a hoʻohana nui ʻia i nā implants lapaʻau (e like me nā vascular patches). He kūpono ke ʻano porous no ka hoʻopaʻa ʻana i nā gaskets (rebound ma hope o ke kaomi ʻana e hoʻopiha i ke āpau).
Nā hiʻohiʻona noi maʻamau
● PTFE: He kūpono no ka hoʻoheheʻe ʻana i ke kaula wela kiʻekiʻe, ka uhi ʻana i nā lubrication coatings, nā linings pipeline kemika, a me nā linings reactor maʻemaʻe kiʻekiʻe i ka ʻoihana semiconductor.
● ePTFE: Ma ka uwea kahua, ua hoʻohana 'ia e like me ka insulation papa o kiʻekiʻe-frequency kamaʻilio uwea, i loko o ka 'oihana lapaʻau, ua hoʻohana 'ia no ka artificial koko moku a me ka sutures, a ma ka 'oihana kahua, ua hoʻohana 'ia no ka wahie cell proton hoʻololi membranes a me ka ea filtration mea.
Loaʻa i kēlā me kēia PTFE a me ePTFE nā pono ponoʻī. He kūpono ʻo PTFE no ka wela kiʻekiʻe, ke kaomi kiʻekiʻe, a me nā kaiapuni kemika ma muli o kona ʻoi aku ka maikaʻi o ka wela, ke kūpaʻa kemika, a me ka haʻahaʻa friction coefficient; ʻO ePTFE, me kona maʻalahi, ea permeability, a me ka biocompatibility i lawe ʻia e kona microporous structure, hana maikaʻi i ka ʻoihana lapaʻau, kānana, a me nā ʻoihana hoʻopaʻa paʻa. Pono e hoʻoholo ʻia ke koho ʻana o nā mea e pili ana i nā pono o ka hiʻohiʻona noi kikoʻī.
He aha nā noi o ePTFE ma ke kahua olakino?
ePTFE (polytetrafluoroethylene i hoonuiia)hoʻohana nui ʻia i ka lāʻau lapaʻau, ma muli o kāna ʻano microporous kūʻokoʻa, biocompatibility, non-toxic, non-sensitizing a me nā waiwai ʻole carcinogenic. ʻO kēia nā mea hoʻohana nui:
1. kahua maʻi cardiovascular
Nā kīʻaha koko artificial: ʻo ePTFE ka mea i hoʻohana nui ʻia no nā kīʻaha koko artificial, e helu ana ma kahi o 60%. ʻO kāna ʻano microporous e hiki ai i nā ʻiʻo kino kanaka a me nā kīʻaha koko ke ulu i loko, e hana ana i kahi pilina kokoke i ka ʻiʻo autologous, a laila e hoʻomaikaʻi ai i ka wikiwiki o ka ho'ōla a me ka lōʻihi o nā kīʻaha koko artificial.
Paʻa naʻau: hoʻohana ʻia e hoʻoponopono i ka ʻiʻo o ka naʻau, e like me ka pericardium. Hiki i ka ePTFE puʻuwai puʻuwai ke pale i ka pili ʻana ma waena o ka puʻuwai a me ka ʻiʻo sternum, e hōʻemi ana i ka hopena o ke ʻoki lua.
Vascular stent: hiki ke hoʻohana ʻia ka ePTFE e hana i ka uhi ʻana o nā stents vascular, a ʻo kona biocompatibility maikaʻi a me nā waiwai mechanical e kōkua i ka hōʻemi ʻana i ka mumū a me ka thrombosis.
2. ʻokiʻoki ʻia
Nā mea hoʻopili maka: hiki ke hoʻohana ʻia ka ePTFE e hana i nā mea palaki maka, e like me ka rhinoplasty a me nā mea hoʻopiha maka. Kōkua kona ʻano microporous i ka ulu ʻana o ka ʻiʻo a hōʻemi i ka hōʻole.
Orthopedic implants: Ma ke kahua o ka orthopedics, hiki ke hoʻohana ʻia ka ePTFE no ka hana ʻana i nā implants hui, a me kona pale ʻana maikaʻi a me ka biocompatibility kōkua e hoʻonui i ke ola lawelawe o nā implants.
3. Nā noi ʻē aʻe
Nā ʻāpana Hernia: Hiki i nā ʻāpana hernia i hana ʻia me ka ePTFE ke pale pono i ka hoʻi hou ʻana o ka hernia, a ʻo kona ʻano porous e kōkua i ka hoʻohui ʻana i nā kiko.
Nā lāʻau lapaʻau: ePTFE sutures maikaʻi ka maʻalahi a me ka ikaika tensile, hiki ke hōʻemi i ka hoʻopili ʻana o ka ʻiʻo ma hope o ke ʻoki.
ʻO nā puʻuwai puʻuwai: hiki ke hoʻohana ʻia ka ePTFE e hana i nā kiwi puʻuwai, a ʻo kona lōʻihi a me ka biocompatibility e kōkua i ka hoʻonui ʻana i ke ola lawelawe o nā kiwi.
4. Nā mea hoʻopili lāʻau lapaʻau
Hiki ke hoʻohana ʻia ka ePTFE no ka uhi ʻana i nā mea lapaʻau, e like me nā catheters a me nā mea hana ʻoki. ʻO kāna helu haʻahaʻa o ka friction a me ka biocompatibility e kōkua i ka hōʻemi ʻana i ka pōʻino o ka ʻiʻo i ka wā o ke kaʻina
Ka manawa hoʻouna: Apr-27-2025