PTFE ndiyo purasitiki inogara kwenguva refu inozivikanwa pari zvino. Inoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana ane mamiriro akaomarara. Nekuda kwekushanda kwayo kwakanaka, zvishoma nezvishoma yave chigadzirwa chikuru muzvigadzirwa zvepurasitiki (Zvose zvinonzi Polytetrafluoroethylene). Nokudaro, kune vagadziri vakawanda vanogadzira zvigadzirwa zvakadaro. PTFE inogona kugadzirwa mumhando dzakasiyana dzezvigadzirwa, zvakaita semachubhu, tsvimbo, maplate, magasket, mafirimu, nezvimwewo, zvinoshandiswa muminda yakasiyana-siyana.
Chii chinonzi chubhu yePTFE?
Polytetrafluoroethylene (yakapfupikiswa sePTFE), inozivikanwa se "Plastic King", ipolymer yakakura inowanikwa nekuita polymer ye tetrafluoroethylene se monomer, iyo inopenya kana kupenya. Chinhu ichi hachina pigment kana zvimwe zvinowedzera, uye ine hunhu hwekudzivirira acid nealkali, kuramba organic solvents dzakasiyana-siyana, uye hainyungudike mu solvents dzese. Pamusoro pezvo, PTFE ine tembiricha yakakura uye inogona kushandiswa kwenguva yakareba pa -65°C ~ 260°C pasi pekumanikidzwa kwakajairika. Inogadzirwa nenzira ye paste extrusion. PTFE tubes inogadzirwa uchishandisa paste extrusion inochinjika uye inogona kugadzira PTFE tubes ine dhayamita yemukati diki se 0.3 mm kusvika pakakwirira se 100 mm uye ukobvu hwemadziro hudiki se 0.1 mm kusvika 2 mm. Naizvozvo, polytetrafluoroethylene (PTFE) tubes chigadzirwa chinoshanda zvakasiyana-siyana chinopa mashandisirwo akasiyana-siyana mumaindasitiri akasiyana-siyana.
Nei machubhu ePTFE achishandiswa zvakanyanya:
1. Kudzivirira kupisa kwakanyanya, hakunyungudike mune chero chinhu chinonyungudutsa. Inogona kutsungirira kupisa kwakanyanya kusvika 300 °C munguva pfupi, uye inogona kushandiswa nguva dzose pakati pe200 °C ne260 °C, ine kugadzikana kwakanyanya kwekupisa.
2. Kudzivirira kupisa kwakaderera, kusimba kwakanaka kwemuchina pakupisa kwakaderera, kunyangwe tembiricha ikadonha kusvika -65 ℃, haizokanganiswi, uye inogona kuchengetedza kureba kwe5%.
3. Inodzivirira ngura, haipindi makemikari akawanda uye zvinonyungudutsa, inodzivirira maasidhi akasimba uye alkali, mvura uye zvakasiyana-siyana zvinonyungudutsa, inogona kudzivirira zvikamu kubva kumhando ipi zvayo yengura yemakemikari.
4. Kudzivirira kukwegura, kana zvinhu zvakawandisa, kune zvakanakira zviviri zvekusapera uye kusanamatira. Nguva yakanakisisa yekukwegura mumapurasitiki.
5. Kunyorovesa kwakanyanya, chiyero chidiki chekukweshana pakati pezvinhu zvakasimba. Chiyero chekukweshana chinoshanduka kana mutoro watsvedza, asi kukosha kwacho kuri pakati pe0.05-0.15 chete. Nokudaro, ine zvakanakira zvekudzivirira kutanga zvishoma uye kushanda zvakanaka pakugadzira mabheringi.
6. Kusanamatira ndicho chinhu chidiki pane zvese zvakasimba, uye hachinamati kune chero chinhu. Zvinhu zvinenge zvese hazvinamati pairi. Mafirimu matete kwazvo anoratidzawo hunhu hwakanaka husina kunamira.
7. Haina hwema, haina kunaka, haina chepfu, haina simba mumuviri, uye haina matambudziko kana ikaiswa mumuviri setsinga dzeropa dzekugadzira uye nhengo kwenguva yakareba.
8. Huremu uye hunochinjika. Hunoderedza zvakanyanya simba remushandisi.
Mamwe mashandisirwo akajairika emachubhu ePTFE:
1. Indasitiri yemakemikari
Nekuda kwekusakwanisa kwavo kushandisa makemikari akawanda kumakemikari ese, machubhu ePTFE akakodzera kushandiswa muindasitiri yemakemikari. Izvi zvinosanganisira indasitiri yesemiconductor. Maitiro emazuva ano mukugadzirwa kwesemiconductor anoda kuyerwa kwakachengeteka uye kutakurwa kwezvinwiwa zvinoparadza (acids uye bases). Izvi zvinogona kukuvadza zvakanyanya chubhu yekuendesa munguva pfupi.
2. Indasitiri yemotokari
Muinjini yemotokari, machubhu emhando yepamusoro akagadzirwa nePTFE anoshandiswa pakuburitsa mafuta uye kupinza mafuta. Zvakadai semachubhu emafuta, machubhu eturbocharger, machubhu anotonhodza, machubhu ebhureki otomatiki, machubhu ebhureki remudhudhudhu, machubhu einjini yedhiziri, machubhu ekumhanya uye machubhu ekufambisa ane simba. Hunhu hwekudzivirira kupisa kwakanyanya uye kupisa kwakaderera, kuramba kumanikidzwa kwakanyanya, kuramba kupfeka uye kuramba ngura kwechubhu yePTFE hunoita kuti igare kwenguva refu isina kutsiva nguva nenguva.
3. Indasitiri yekudhinda ye3D
Mukudhinda kwe3D, shinda inofanira kutamisirwa kumuromo wekudhinda, izvo zvinofanirwa kuitwa pakupisa kwakanyanya. PTFE tube ndiyo polymer inonyanya kufarirwa muindasitiri yekudhinda ye3D nekuda kwekupisa kwayo kwakanyanya uye hunhu husina kunamira, izvo zvinobatsira kutsvedza zvinhu zviri nyore kubva mumuromo.
4. Indasitiri yezvekurapa
Hunhu hwakakosha hwemachubhu ePTFE hunosanganisirawo chimiro chiri nyore kuchenesa pamusoro. Mumakore gumi apfuura, machubhu ePTFE ave achishandiswa zvakanyanya mumidziyo yekurapa. Nekuda kwekusakwana kwekukweshana kwemachubhu ePTFE, zvinoreva kuti ine nzvimbo yakatsetseka isingavhari kana kubatsira kukura kwebhakitiriya. Pakati pawo, machubhu anoshandiswa kuma cannula, catheters, pipettes uye endoscopes.
5. Indasitiri yezvekudya
Nekuda kwekuchenesa kwayo kuri nyore uye kusanamatira, machubhu ePTFE anogona kushandiswa muindasitiri yezvikafu. Kunyanya, machubhu akagadzirwa nePTFE isina kuzadzwa akakodzera nekuda kwekusapindirana kwawo mumuviri uye anotevedzera nhungamiro dzeUS Food and Drug Administration. Saka, zvakaonekwa kuti hazvina njodzi kana zvakabatana nepurasitiki nechero rudzi rwechikafu.
Kutenga machubhu ePTFE akakodzera hakusi kungosarudza magadzirirwo akasiyana ekushandisa kwakasiyana chete. Zvimwe zvekusarudza mugadziri akavimbika. Besteflon Fluorine plastic Industry Co., Ltd. yave iine hunyanzvi mukugadzira machubhu ePTFE emhando yepamusoro kwemakore gumi nemashanu. Kana paine mibvunzo nezvaunoda, ndapota inzwa wakasununguka kutibvunza kuti uwane mamwe mazano ehunyanzvi.
Nyaya Dzakabatana
Nguva yekutumira: Nyamavhuvhu-13-2022