Ọ bụ ezie na PTFE (polytetrafluoroethylene) naePTFE(gbasaa polytetrafluoroethylene) nwere otu ihe ndabere kemịkal, ha nwere nnukwu ọdịiche dị na nhazi, arụmọrụ na mpaghara ngwa.
Ọdịdị kemịkal na ihe ndị bụ isi
Ma PTFE na ePTFE bụ polymerized site na tetrafluoroethylene monomers, ma ha abụọ nwere usoro kemịkalụ (CF₂-CF₂) ₙ, bụ nke na-adịghị ike nke ukwuu ma na-eguzogide okpomọkụ. A na-emepụta PTFE site n'inwe okpomọkụ dị elu, a na-ahazikwa ụdọ molekụla ahụ nke ọma iji mepụta nnukwu ihe na-adịghị mma. ePTFE na-eji usoro ịgbatị pụrụ iche iji mee ka PTFE fiberize na oke okpomọkụ iji mepụta usoro ntupu porous nwere porosity nke 70%-90%.
Ntụle nke ihe anụ ahụ
| Atụmatụ | PTFE | ePTFE |
| Njupụta | Elu (2.1-2.3 g/cm³) | Dị ala (0.1-1.5 g/cm³) |
| Nkwenye | Enweghị permeability (nke zuru oke) | Permeability dị elu (micropores na-ekwe ka mgbasa gas) |
| Mgbanwe | Dịtụ ike na kenkuwa | Nnukwu mgbanwe na elasticity |
| Mechanical ike | Ike mkpakọ dị elu, obere mgbochi anya mmiri | Nkwụsị anya mmiri ka mma nke ọma |
| Porosity | Enweghị pores | Porosity nwere ike iru 70%-90% |
Njirimara arụrụ arụ
●PTFE: Ọ bụ kemịkalụ inert ma na-eguzogide acid siri ike, alkalis siri ike na ihe mgbaze organic, nwere oke okpomọkụ nke -200 ° C ruo + 260 ° C, ma nwee dielectric dị ala dị oke ala (ihe dịka 2.0), na-eme ka ọ dị mma maka mkpuchi sekit ugboro ugboro.
● ePTFE: Ọdịdị microporous nwere ike nweta ihe ndị na-adịghị egbochi mmiri na ume ume (dị ka ụkpụrụ Gore-Tex), a na-ejikwa ya mee ihe na ntinye ọgwụ (dị ka vaskụla patches). The porous Ọdịdị kwesịrị ekwesị maka akara gaskets (rebound mgbe mkpakọ mejupụta oghere).
Ụdị ihe omume a na-ahụkarị
● PTFE: Kwesịrị ekwesị maka mkpuchi ọkụ ọkụ dị elu, nke na-ebu mkpuchi lubrication, lining pipeline, na akwa reactor dị elu na ụlọ ọrụ semiconductor.
● ePTFE: N'ime eriri USB, a na-eji ya dị ka ihe mkpuchi mkpuchi nke eriri nkwurịta okwu dị elu, na ngalaba ahụike, a na-eji ya maka arịa ọbara na-emepụta ihe na sutures, na n'ime ụlọ ọrụ mmepụta ihe, a na-eji ya mee ihe maka mmanụ ụgbọala proton mgbanwe membranes na ikuku filtration ihe.
PTFE na ePTFE nke ọ bụla nwere uru nke ya. PTFE kwesịrị ekwesị maka okpomọkụ dị elu, nrụgide dị elu, na gburugburu ebe obibi na-emebi emebi n'ihi nguzogide okpomọkụ ya dị elu, nguzogide kemịkalụ, na ọnụ ọgụgụ esemokwu dị ala; ePTFE, ya na mgbanwe ya, ikuku ikuku, na ihe ndapụta nke ihe owuwu microporous na-eweta, na-arụ ọrụ nke ọma na ụlọ ọrụ ahụike, filtration, na ike akara. Ekwesịrị ikpebi nhọrọ nke ihe dabere na mkpa nke ọnọdụ ngwa a kapịrị ọnụ.
Kedu ihe bụ ngwa ePTFE na ngalaba ahụike?
ePTFE (gbasaa polytetrafluoroethylene)A na-eji ya n'ọtụtụ ebe na ngalaba ahụike, tumadi n'ihi usoro microporous ya pụrụ iche, biocompatibility, na-adịghị egbu egbu, enweghị mmetụta na-adịghị mma na ihe ndị na-abụghị carcinogenic. Ndị a bụ ngwa ngwa ya:
1. Ebe obi obi
Ọbara ọbara arụrụ arụ: ePTFE bụ ihe a na-ejikarị eme ihe maka arịa ọbara arụrụ arụ, na-aza ihe dịka 60%. Ọdịdị ya microporous na-enye ohere mkpụrụ ndụ anụ ahụ mmadụ na arịa ọbara na-eto eto n'ime ya, na-eme njikọ dị nso na anụ ahụ nke autologous, si otú ahụ na-emeziwanye usoro ọgwụgwọ na ịdịte aka nke arịa ọbara.
Ihe nkedo obi: eji emezi anụ ahụ obi, dị ka pericardium. Ihe nkedo obi ePTFE nwere ike igbochi nchikota n'etiti obi na anụ ahụ sternum, na-ebelata ihe ize ndụ nke ịwa ahụ nke abụọ.
Vascular stent: Enwere ike iji ePTFE mee mkpuchi nke stent vaskụla, yana ezigbo bioacompatibility na akụrụngwa na-enyere aka belata mbufụt na thrombosis.
2. Plastic ịwa ahụ
Ntinye ihu: Enwere ike iji ePTFE mee ihe eji eme plastik ihu, dị ka rhinoplasty na ihe nju ihu. Ọdịdị microporous ya na-enyere aka ibu anụ ahụ ma na-ebelata ịjụ.
Ọkpụkpụ Orthopedic: Na ngalaba nke orthopedics, ePTFE nwere ike iji rụpụta nkwonkwo nkwonkwo, na ịdị mma ya na-eguzogide na biocompatibility na-enyere aka ịbawanye ndụ ọrụ nke ntinye.
3. Ngwa ndị ọzọ
Hernia patches: Hernia patches mere nke ePTFE nwere ike igbochi nlọghachi nke hernia nke ọma, na nhazi ya na-adịghị mma na-enyere aka njikọta anụ ahụ.
Sutures ọgwụ: ePTFE sutures nwere ezigbo mgbanwe na ike ike, nke nwere ike ibelata nchikota anụ ahụ mgbe ịwachara ahụ.
Ọkpụkpụ obi: ePTFE nwere ike iji rụpụta valvụ obi, na ịdịte aka ya na biocompatibility na-enyere aka ịbawanye ndụ ọrụ nke valves.
4. Ihe mkpuchi ngwaọrụ ahụike
Enwere ike iji ePTFE maka mkpuchi nke ngwaọrụ ahụike, dị ka catheters na ngwa ịwa ahụ. Ọnụ ọgụgụ ya dị ala nke esemokwu na ihe ndị dị ndụ na-enyere aka belata mmebi anụ ahụ n'oge ịwa ahụ
Oge nzipu: Eprel-27-2025