Agbanyeghị na PTFE (polytetrafluoroethylene) naePTFE(polytetrafluoroethylene gbasaara) nwere otu ntọala kemịkalụ ahụ, ha nwere nnukwu ọdịiche dị na nhazi, arụmọrụ na mpaghara ojiji.
Nhazi kemịkalụ na ihe ndị bụ isi
E ji tetrafluoroethylene monomers mepụta PTFE na ePTFE, ha abụọ nwekwara usoro kemịkalụ (CF₂-CF₂)ₙ, nke na-anaghị arụ ọrụ nke ọma ma na-eguzogide okpomọkụ dị elu. A na-emepụta PTFE site na sintering dị elu, a na-ahazikwa agbụ molekul nke ọma iji mepụta usoro dị oke arọ, nke na-anaghị apụta ìhè. ePTFE na-eji usoro ịgbatị pụrụ iche eme ka PTFE fiber dị na okpomọkụ dị elu wee mepụta nhazi mesh porous nke nwere porosity nke 70%-90%.
Ntụnyere nke ihe ndị dị n'anụ ahụ
| atụmatụ | PTFE | ePTFE |
| Njupụta | Elu (2.1-2.3 g/cm³) | Dị ala (0.1-1.5 g/cm³) |
| Ịgafe | Enweghị ike ịbanye n'ime mmiri (oke zuru oke) | Nnukwu ikike mmadụ nwere ike ịnweta (micropores na-enye ohere ka gas gbasaa) |
| Mgbanwe | O siri ike ma gbawaa agbawa | Nnukwu mgbanwe na mgbanwe |
| Ike igwe | Ike mkpakọ dị elu, obere mgbochi anya mmiri | Mmezi nke ukwuu megide anya mmiri |
| Ntụpọsi | Enweghị oghere | Porosity nwere ike iru 70% - 90% |
Njirimara ọrụ
●PTFE: Ọ na-adịghị arụ ọrụ nke ọma ma na-eguzogide asịd siri ike, alkalis siri ike na ihe ndị na-agbaze ihe ndị dị ndụ, nwere oke okpomọkụ nke -200°C ruo +260°C, ma nwee obere dielectric (ihe dị ka 2.0), nke na-eme ka ọ dabara adaba maka mkpuchi sekit ugboro ugboro.
● ePTFE: Ọdịdị obere oghere nwere ike inweta ihe ndị na-anaghị amị amị ma na-eku ume (dịka ụkpụrụ Gore-Tex), a na-ejikwa ya nke ọma na ihe ndị e tinyere n'ahụike (dịka ihe ndị e ji agbanye akwara). Ọdịdị oghere ahụ dabara adaba maka mkpuchi gaskets (a na-akpọkọta ha ọzọ mgbe a gbasịrị ha iji mejupụta oghere ahụ).
Ọnọdụ ngwa nkịtị
● PTFE: Ọ dabara adaba maka mkpuchi waya dị elu, mkpuchi mmanụ na-ebu ibu, mkpuchi pipeline kemịkalụ, na mkpuchi reactor dị ọcha na ụlọ ọrụ semiconductor.
● ePTFE: N'ọhịa waya, a na-eji ya dị ka oyi akwa mkpuchi nke eriri nkwukọrịta ugboro ugboro, n'ọhịa ahụike, a na-eji ya maka arịa ọbara na ihe e ji akwa ákwà arụ ọrụ, na n'ọhịa ụlọ ọrụ mmepụta ihe, a na-eji ya maka akpụkpọ ahụ mgbanwe proton cell mmanụ ọkụ na ihe nzacha ikuku.
PTFE na ePTFE nwere uru nke ha. PTFE dabara adaba maka gburugburu okpomọkụ dị elu, nrụgide dị elu, na gburugburu ebe obibi na-emebi ihe kemịkalụ n'ihi oke iguzogide okpomọkụ ya, iguzogide kemịkalụ, na obere ọnụọgụ esemokwu; ePTFE, ya na mgbanwe ya, ikuku na-abanye n'ime ya, na ndakọrịta bio nke usoro microporous ya wetara, na-arụ ọrụ nke ọma na ụlọ ọrụ ọgwụ, nzacha, na mkpuchi ike. A ga-ekpebi nhọrọ nke ihe dabere na mkpa nke ọnọdụ ngwa akọwapụtara.
Kedu ihe bụ ngwa ePTFE n'ọhịa ahụike?
ePTFE (polytetrafluoroethylene gbasaa)A na-ejikarị ya eme ihe n'ọhịa ahụike, ọkachasị n'ihi nhazi ya pụrụ iche nke obere oghere dị n'ime ya, njikọta ya na ihe ndị dị ndụ, ọ naghị egbu egbu, ọ naghị emetụ mmadụ n'ahụ na ọ naghị akpata ọrịa kansa. Ihe ndị a bụ isi ojiji ya:
1. Ngalaba obi na akwara obi
Ọbara ọbara e ji aka rụọ: ePTFE bụ ihe e ji aka rụọ nke a na-ejikarị eme ihe maka arịa ọbara e ji aka rụọ, nke ruru ihe dị ka 60%. Ọdịdị ya dị obere na-enye ohere ka mkpụrụ ndụ anụ ahụ na arịa ọbara mmadụ too na ya, na-emepụta njikọ dị nso na anụ ahụ onwe ya, si otú a na-eme ka ọsọ ọgwụgwọ na ogologo ndụ nke arịa ọbara e ji aka rụọ dịkwuo mma.
Mkpuchi obi: a na-eji arụzi anụ ahụ obi, dịka pericardium. Mkpuchi obi ePTFE nwere ike igbochi nrapado n'etiti obi na anụ ahụ sternum, na-ebelata ihe egwu nke ịwa ahụ nke abụọ.
Stent Vascular: Enwere ike iji ePTFE mee mkpuchi nke stents vascular, ezigbo biocompatibility na njirimara mechanical ya na-enyere aka belata mbufụt na thrombosis.
2. Ịwa ahụ plastik
Ihe e tinyere n'ihu: Enwere ike iji ePTFE mee ihe plastik ihu, dịka rhinoplasty na ihe e ji ekpuchi ihu. Ọdịdị ya na-enyere anụ ahụ aka ito eto ma belata ịjụ.
Ihe ndị e ji eme ka ọkpụkpụ gbapụta: N'ihe gbasara ọgwụgwọ ọkpụkpụ gbapụta, ePTFE nwere ike iji mepụta ihe ndị e ji eme ka nkwonkwo gbapụta, ọ na-emekwa ka ọ ghara ịdị mma ma ọ bụ dakọtara nke ọma, meekwa ka ọ dịkwuo ogologo ndụ ọrụ nke ihe ndị e ji eme ka ọkpụkpụ gbapụta.
3. Ngwa ndị ọzọ
Mgbawa Hernia: Mgbawa Hernia nke ePTFE mere nwere ike igbochi nlọghachi hernia nke ọma, nhazi oghere ya na-enyekwa aka ijikọ anụ ahụ.
Ntutu ahụike: Ntutu ePTFE nwere ezigbo mgbanwe na ike nrụgide, nke nwere ike ibelata nrapado anụ ahụ mgbe a wachara ya ahụ.
Valvụ obi: Enwere ike iji ePTFE mepụta valvụ obi, ike ya na ndakọrịta ya na-enyere aka ịbawanye ndụ ọrụ nke valvụ.
4. Mkpuchi ngwaọrụ ahụike
Enwere ike iji ePTFE mee ihe mkpuchi nke ngwaọrụ ahụike, dịka katetị na ngwa ịwa ahụ. Ọ na-ebelata oke esemokwu na ndakọrịta ya na-enyere aka belata mmebi anụ ahụ n'oge ịwa ahụ.
Oge ozi: Eprel-27-2025