Kunyangwe PTFE (polytetrafluoroethylene) uyeePTFE(polytetrafluoroethylene yakawedzerwa) ine hwaro hwemakemikari hwakafanana, ine musiyano mukuru muchimiro, mashandiro uye nzvimbo dzekushandisa.
Maumbirwo emakemikari uye hunhu hwakakosha
PTFE ne ePTFE zvese zviri zviviri zvakagadzirwa ne polymer kubva kuma tetrafluoroethylene monomers, uye zvese zvine makemikari (CF₂-CF₂)ₙ, ayo asina makemikari akawanda uye anodzivirira tembiricha yakakwira. PTFE inoumbwa nekupiswa kwetembiricha yakakwira, uye macheni emamorekuru akarongwa zvakanaka kuti agadzire chimiro chakakora, chisina maburi. ePTFE inoshandisa nzira yekutambanudza yakakosha kuita kuti PTFE iite fiberize patembiricha yakakwira kuti igadzire chimiro chemesh chine maburi chine maburi e70%-90%.
Kuenzanisa kwezvimiro zvemuviri
| Zvinhu zvirimo | PTFE | ePTFE |
| Kuwanda kwevanhu | Yakakwirira (2.1-2.3 g/cm³) | Yakaderera (0.1-1.5 g/cm³) |
| Kubvumidzwa kutenderuka | Hapana kuvhurika (kwakakora chose) | Kupinda kwemhepo kwakanyanya (ma micropores anobvumira kupararira kwegasi) |
| Kuchinjika | Yakaoma uye yakaoma | Kuchinjika kwakanyanya uye kusimba |
| Simba remakanika | Simba guru rekudzvanya, kudzivirira kubvaruka kwakaderera | Kudzivirira misodzi kwakawedzera zvakanyanya |
| Kuboorwa kwemvura | Hapana maburi | Kureba kwebvudzi kunogona kusvika 70% -90% |
Hunhu hunoshanda
●PTFE: Haina makemikari uye haipindi maasidhi akasimba, maalkali akasimba uye zvinonyungudutsa zve organic, ine tembiricha iri pakati pe -200°C kusvika +260°C, uye ine dielectric constant yakaderera zvikuru (inenge 2.0), zvichiita kuti ive yakakodzera kuvharidzira circuit circuit insulation ine frequency yakakwira.
● ePTFE: Chimiro chine maburi madiki chinogona kuita kuti pave nemazino asingapindi mvura uye anofema (semutemo weGore-Tex), uye chinoshandiswa zvakanyanya muzvishandiso zvekurapa (sezvakaita maburi etsinga). Chimiro chine maburi chakakodzera kuvhara magasket (kudzokororwa mushure mekudzvanywa kuti chizadze mukaha).
Maitiro akajairika ekushandisa
● PTFE: Yakakodzera tambo dzinopisa zvakanyanya, machira ekuzora ane bearing lubrication, mapaipi emakemikari, uye machira ereactor akachena zvakanyanya muindasitiri yesemiconductor.
● ePTFE: Mumunda wetambo, inoshandiswa sechidziviriro chetambo dzekukurukurirana dzinoshandiswa zvakanyanya, mumunda wezvekurapa, inoshandiswa patsinga dzeropa dzekugadzira uye sutures, uye mumunda wemaindasitiri, inoshandiswa pakubatanidza mamembrane eproton nemidziyo yemhepo.
PTFE ne ePTFE imwe neimwe ine zvayakanakira zvayo. PTFE yakakodzera munzvimbo dzinopisa zvakanyanya, dzine kumanikidzwa kwakanyanya, uye dzine ngura nekuda kwekudzivirira kupisa kwakanyanya, dzinodzivirira makemikari, uye dzine friction yakaderera; ePTFE, ine kuchinjika kwayo, kubvumidzwa kwayo nemhepo, uye kuenderana kwayo nezvinhu zvipenyu kunounzwa nechimiro chayo chema microporous, inoita zvakanaka muindasitiri yekurapa, yekusefa, uye yekusimbisa simba. Sarudzo yezvinhu inofanira kusarudzwa zvichienderana nezvinodiwa nemamiriro chaiwo ekushandiswa.
Ndezvipi zvinoshandiswa ne ePTFE mukurapa?
ePTFE (yakawedzerwa polytetrafluoroethylene)inoshandiswa zvakanyanya mune zvehutano, kunyanya nekuda kwechimiro chayo chakasiyana che microporous, inoenderana nehupenyu, haina chepfu, hainyanyi kukuvadza uye haina kukonzera kenza. Izvi ndizvo zvinonyanya kushandiswa:
1. Munda wemwoyo
Mitsipa yeropa yekugadzira: ePTFE ndiyo inonyanya kushandiswa pakugadzira mitsipa yeropa yekugadzira, inosvika 60%. Maumbirwo ayo ane maburi madiki anobvumira masero enyama yemunhu nemidziyo yeropa kukura mairi, zvichiita kuti pave nekubatana pedyo nenyama yega yega, nokudaro zvichivandudza mwero wekupora uye kugara kwenguva refu kwemidziyo yeropa yekugadzira.
Chigamba chemwoyo: chinoshandiswa kugadzirisa nhengo dzemwoyo, dzakadai se pericardium. Chigamba chemwoyo che ePTFE chinogona kudzivirira kubatana pakati penhengo dzemwoyo nedzesternum, zvichideredza njodzi yekuvhiyiwa kwechipiri.
Stent yetsinga dzeropa: ePTFE inogona kushandiswa kugadzira kufukidza kwe vascular stents, uye kubatana kwayo zvakanaka uye hunhu hwayo hwemakanika zvinobatsira kuderedza kuzvimba uye thrombosis.
2. Kuvhiyiwa kwepurasitiki
Zvigadzirwa zvechiso: ePTFE inogona kushandiswa kugadzira zvinhu zvepurasitiki pachiso, zvakaita se rhinoplasty uye facial fillers. Maumbirwo ayo ane maburi madiki anobatsira kukura kwenyama uye kuderedza kurambwa.
Kuisirwa kwemapfupa: Munyaya yekurapa majoini, ePTFE inogona kushandiswa kugadzira majoini, uye kuramba kwayo kupfeka zvakanaka uye kugara kwayo zvakanaka kunobatsira kuwedzera hupenyu hwekushanda kwemajoini.
3. Mamwe maapplication
Zvidimbu zveHernia: Zvidimbu zveHernia zvakagadzirwa ne ePTFE zvinogona kudzivirira kudzoka kwehernia, uye chimiro chayo chine maburi chinobatsira kubatanidzwa kwenyama.
Masuture ekurapa: Masuture ePTFE ane kuchinjika kwakanaka uye simba rekusunga, izvo zvinogona kuderedza kunamira kwenyama mushure mekuvhiyiwa.
Mavharuvhu emwoyo: ePTFE inogona kushandiswa kugadzira mavharuvhu emwoyo, uye kugara kwayo kwenguva refu uye kuenderana kwayo nehupenyu hwese kunobatsira kuwedzera hupenyu hwemavharuvhu.
4. Kuputira zvishandiso zvekurapa
ePTFE inogona kushandiswawo pakuputira zvishandiso zvekurapa, zvakaita semacatheter nemidziyo yekuvhiya. Kukwana kwayo kwekukweshana uye kubatana kwayo nemuviri kunobatsira kuderedza kukuvara kwenyama panguva yekuvhiya.
Nguva yekutumira: Kubvumbi-27-2025