Txawm hais tias PTFE (polytetrafluoroethylene) thiabePTFE(nthuav dav polytetrafluoroethylene) muaj tib lub hauv paus tshuaj lom neeg, lawv muaj qhov sib txawv tseem ceeb hauv cov qauv, kev ua tau zoo thiab thaj chaw siv.
Cov qauv tshuaj lom neeg thiab cov khoom yooj yim
Ob qho tib si PTFE thiab ePTFE yog polymerized los ntawm tetrafluoroethylene monomers, thiab ob qho tib si muaj cov mis tshuaj (CF₂-CF₂)ₙ, uas yog cov tshuaj lom neeg inert thiab tiv taus qhov kub siab. PTFE yog tsim los ntawm kev kub siab sintering, thiab cov saw hlau molecular tau teeb tsa ze rau tsim cov qauv ntom ntom, tsis muaj qhov. ePTFE siv cov txheej txheem ncab tshwj xeeb los ua PTFE fiberize ntawm qhov kub siab los tsim cov qauv porous mesh nrog porosity ntawm 70% -90%.
Kev sib piv ntawm cov khoom siv lub cev
| Cov yam ntxwv | PTFE | ePTFE |
| Qhov Ceev | Siab (2.1-2.3 g/cm³) | Qis (0.1-1.5 g/cm³) |
| Kev nkag tau | Tsis muaj permeability (tag nrho ntom) | Permeability siab (micropores tso cai rau cov pa roj diffusion) |
| Kev ywj pheej | Nyuaj thiab tawg yooj yim | Kev yooj ywm thiab elasticity siab |
| Lub zog kho tshuab | Lub zog compressive siab, tsis tshua muaj kev tsim kua muag | Kev tiv thaiv kua muag zoo dua qub |
| Qhov porosity | Tsis muaj qhov hws | Porosity tuaj yeem ncav cuag 70% -90% |
Cov yam ntxwv ua haujlwm
●PTFE: Nws yog tshuaj lom neeg inert thiab tiv taus cov kua qaub muaj zog, alkalis muaj zog thiab cov kuab tshuaj organic, muaj qhov kub thiab txias ntawm -200 ° C txog + 260 ° C, thiab muaj qhov dielectric tsis tu ncua qis heev (kwv yees li 2.0), ua rau nws tsim nyog rau kev rwb thaiv tsev siab zaus.
● ePTFE: Cov qauv microporous tuaj yeem ua tiav cov khoom tiv thaiv dej thiab ua pa tau (xws li lub hauv paus ntsiab lus Gore-Tex), thiab siv dav hauv kev cog hniav kho mob (xws li cov hlab ntsha). Cov qauv porous no yog qhov tsim nyog rau kev kaw cov gaskets (rov qab tom qab nias kom puv qhov sib txawv).
Cov xwm txheej ntawm daim ntawv thov ib txwm muaj
● PTFE: Haum rau kev rwb thaiv tsev kub heev, cov txheej roj nplua nyeem rau cov kabmob, cov ntaub thaiv kav dej tshuaj lom neeg, thiab cov ntaub thaiv reactor huv siab hauv kev lag luam semiconductor.
● ePTFE: Hauv thaj chaw cable, nws yog siv ua txheej rwb thaiv tsev ntawm cov cables sib txuas lus siab, hauv thaj chaw kho mob, nws yog siv rau cov hlab ntsha dag thiab cov xov, thiab hauv thaj chaw kev lag luam, nws yog siv rau cov roj cell proton pauv daim nyias nyias thiab cov ntaub ntawv lim cua.
PTFE thiab ePTFE txhua tus muaj lawv tus kheej qhov zoo. PTFE yog tsim rau qhov kub thiab txias, siab siab, thiab cov chaw muaj tshuaj lom neeg vim nws tiv taus cua sov zoo, tiv taus tshuaj lom neeg, thiab coefficient sib txhuam tsawg; ePTFE, nrog nws qhov yooj ywm, huab cua permeability, thiab biocompatibility coj los ntawm nws cov qauv microporous, ua tau zoo hauv kev kho mob, kev lim dej, thiab kev lag luam dynamic sealing. Kev xaiv cov khoom siv yuav tsum tau txiav txim siab raws li qhov xav tau ntawm qhov xwm txheej thov tshwj xeeb.
Cov ntawv thov ntawm ePTFE hauv kev kho mob yog dab tsi?
ePTFE (nthuav dav polytetrafluoroethylene)yog siv dav hauv kev kho mob, feem ntau yog vim nws cov qauv microporous tshwj xeeb, biocompatibility, tsis muaj tshuaj lom, tsis ua rau khaus thiab tsis ua rau mob qog noj ntshav. Cov hauv qab no yog nws cov ntawv thov tseem ceeb:
1. Kev mob plawv
Cov hlab ntsha cuav: ePTFE yog cov khoom siv hluavtaws siv dav tshaj plaws rau cov hlab ntsha cuav, suav txog li 60%. Nws cov qauv microporous tso cai rau cov hlwb nqaij ntawm tib neeg thiab cov hlab ntsha kom loj hlob hauv nws, tsim kev sib txuas ze rau cov ntaub so ntswg autologous, yog li txhim kho qhov kev kho mob thiab kev ua haujlwm ntev ntawm cov hlab ntsha cuav.
Daim nplaum plawv: siv los kho cov nqaij ntawm lub plawv, xws li pericardium. Daim nplaum plawv ePTFE tuaj yeem tiv thaiv kev sib txuas ntawm lub plawv thiab cov nqaij ntawm lub duav, txo qhov kev pheej hmoo ntawm kev phais zaum ob.
Vascular stent: ePTFE tuaj yeem siv los ua cov txheej txheem ntawm vascular stents, thiab nws cov biocompatibility zoo thiab cov khoom siv kho tshuab pab txo qhov o thiab thrombosis.
2. Kev phais yas
Kev cog rau ntawm lub ntsej muag: ePTFE siv tau los ua cov khoom siv yas rau ntawm lub ntsej muag, xws li kev phais lub qhov ntswg thiab cov khoom siv fillers rau ntawm lub ntsej muag. Nws cov qauv microporous pab cov nqaij loj hlob thiab txo qhov kev tsis lees txais.
Cov pob txha cog rau hauv pob txha: Hauv kev kho mob pob txha, ePTFE tuaj yeem siv los tsim cov pob qij txha cog rau hauv pob txha, thiab nws txoj kev tiv thaiv kev hnav zoo thiab kev sib haum xeeb pab ua kom lub neej kev pabcuam ntawm cov pob txha cog rau hauv pob txha ntev dua.
3. Lwm yam kev siv
Cov ntaub thaiv hernia: Cov ntaub thaiv hernia ua los ntawm ePTFE tuaj yeem tiv thaiv tau qhov rov tshwm sim ntawm hernia, thiab nws cov qauv porous pab kev sib koom ua ke ntawm cov ntaub so ntswg.
Cov xov kho mob: ePTFE cov xov muaj qhov yooj ywm zoo thiab lub zog tensile, uas tuaj yeem txo cov ntaub so ntswg tom qab phais.
Cov qhov dej plawv: ePTFE siv tau los tsim cov qhov dej plawv, thiab nws qhov ruaj khov thiab biocompatibility pab ua kom lub neej ua haujlwm ntawm cov qhov dej ntev dua.
4. Cov txheej txheem kho mob
ePTFE kuj tseem siv tau rau cov txheej txheem ntawm cov khoom siv kho mob, xws li catheters thiab cov cuab yeej phais. Nws cov coefficient qis ntawm kev sib txhuam thiab biocompatibility pab txo cov ntaub so ntswg puas tsuaj thaum lub sijhawm phais.
Lub sijhawm tshaj tawm: Plaub Hlis-27-2025