Nangona i-PTFE (i-polytetrafluoroethylene) kunyeePTFE(i-polytetrafluoroethylene eyandisiweyo) inesiseko esifanayo sekhemikhali, inomahluko omkhulu kwisakhiwo, ukusebenza kunye neendawo zokusetyenziswa.
Ubume beMichiza kunye neempawu ezisisiseko
Zombini i-PTFE kunye ne-ePTFE zi-polymerized ukusuka kwi-tetrafluoroethylene monomers, kwaye zombini zinefomula yekhemikhali (CF₂-CF₂)ₙ, ene-inert ephezulu yeekhemikhali kwaye imelana nobushushu obuphezulu. I-PTFE yenziwa yi-high-temperature sintering, kwaye amatyathanga emolekyuli acwangciswe ngokusondeleyo ukuze enze isakhiwo esixineneyo, esingenazibonda. I-ePTFE isebenzisa inkqubo ekhethekileyo yokwelula ukwenza i-PTFE i-fiberize kumaqondo obushushu aphezulu ukwenza i-porous mesh structure kunye ne-porosity ye-70% -90%.
Ukuthelekiswa kweempawu zomzimba
| Iimbonakalo | PTFE | ePTFE |
| Ukuxinana | Phezulu (2.1-2.3 g/cm³) | Phantsi (0.1-1.5 g/cm³) |
| Ukufikeleleka | Akukho kungeneka (kuxinene ngokupheleleyo) | Ukungena okuphezulu (ii-micropores zivumela ukusasazwa kwegesi) |
| Ukuba bhetyebhetye | Iqinile kwaye i-brittle | Ukuguquguquka okuphezulu kunye nokunwebeka |
| Amandla omatshini | Amandla aphezulu acinezelayo, ukuxhathisa okuphantsi kweenyembezi | Kuphuculwe kakhulu ukuxhathisa kweenyembezi |
| I-Porosity | Akukho pores | I-Porosity inokufikelela kwi-70% -90% |
Iimpawu zokusebenza
●I-PTFE: I-inert ye-chemically inert kwaye iyamelana ne-acids eqinile, i-alkali eqinile kunye ne-solvents ye-organic, inoluhlu lweqondo lokushisa ukusuka -200 ° C ukuya ku- +260 ° C, kwaye ine-dielectric ephantsi kakhulu (malunga ne-2.0), eyenza ifaneleke ukufakwa kwe-high-frequency circuit insulation.
● I-ePTFE: Isakhiwo se-microporous sinokufikelela kwiipropati ezingenamanzi kunye nokuphefumula (ezifana nomgaqo we-Gore-Tex), kwaye zisetyenziswa ngokubanzi kwiimpawu zonyango (ezifana neepatches ze-vascular). Isakhiwo se-porous sifanelekile ukutywinwa kwee-gaskets (i-rebound emva koxinzelelo ukuze ugcwalise i-gap).
Iimeko zosetyenziso oluqhelekileyo
● I-PTFE: Ilungele ukugqunywa kwentambo yobushushu obuphezulu, ithwele iileyiti zokuthambisa, iileyile zemibhobho yekhemikhali, kunye nococeko oluphezulu lwe-reactor linings kwishishini le-semiconductor.
● I-ePTFE: Kwintsimi yentambo, isetyenziswe njenge-insulation layer ye-high-frequency communication cables, kwintsimi yezokwelapha, isetyenziselwa imithambo yegazi eyenziweyo kunye ne-sutures, kwaye kwintsimi yezoshishino, isetyenziselwa i-fuel cell cell proton exchange membranes kunye nezixhobo zokucoca umoya.
I-PTFE kunye ne-ePTFE nganye ineengenelo zayo. I-PTFE ifanelekile kubushushu obuphezulu, uxinzelelo oluphezulu, kunye neendawo ezinobungozi bekhemikhali ngenxa yokumelana nobushushu obuphezulu, ukumelana neekhemikhali, kunye ne-coefficient ephantsi yokukhuhlana; I-ePTFE, kunye nokuguquguquka kwayo, ukunyanzeliswa komoya, kunye ne-biocompatibility eziswa yi-microporous structure, iqhuba kakuhle kumashishini, ukuhluza, kunye nokutywinwa okuguquguqukayo. Ukukhethwa kwezinto eziphathekayo kufuneka kumiselwe ngokusekelwe kwiimfuno zemeko yesicelo esithile.
Zeziphi izicelo ze-ePTFE kwicandelo lezonyango?
I-ePTFE (ipolytetrafluoroethylene eyandisiweyo)isetyenziswa ngokubanzi kwicandelo lezonyango, ikakhulu ngenxa yesakhiwo sayo esikhethekileyo se-microporous, biocompatibility, non-toxic, non-sensitizing and non-carcinogenic properties. Ezi zilandelayo zezona ziphambili izicelo:
1. Intsimi yentliziyo
Imithambo yegazi eyenziweyo: I-ePTFE yeyona nto isetyenziswa kakhulu kwimithambo yegazi eyenziweyo, ibalwa malunga ne-60%. Isakhiwo sayo se-microporous sivumela iiseli zezicubu zomntu kunye nemithambo yegazi ukuba zikhule kuyo, zenze uxhulumaniso olusondeleyo kwizicubu ze-autologous, ngaloo ndlela kuphuculwe izinga lokuphilisa kunye nokuqina kwemithambo yegazi eyenziweyo.
Isiqwenga sentliziyo: sisetyenziselwa ukulungisa izicubu zentliziyo, ezifana ne-pericardium. I-ePTFE i-heart patch inokuthintela ukunamathela phakathi kwentliziyo kunye nezicubu ze-sternum, ukunciphisa umngcipheko wotyando lwesibini.
I-Vascular stent: I-ePTFE ingasetyenziselwa ukwenza ukugquma kwee-stents ze-vascular, kunye ne-biocompatibility yayo efanelekileyo kunye neempawu zomatshini zinceda ukunciphisa ukuvuvukala kunye ne-thrombosis.
2. Utyando lweplastiki
Ukufakelwa kobuso: I-ePTFE ingasetyenziselwa ukwenza izinto zeplastiki zobuso, ezifana ne-rhinoplasty kunye nokugcwaliswa kobuso. Isakhiwo sayo se-microporous sinceda ukukhula kwezicubu kunye nokunciphisa ukugatywa.
Ukufakelwa kwamathambo: Kwintsimi ye-orthopedics, i-ePTFE ingasetyenziselwa ukuvelisa ukufakelwa okudibeneyo, kunye nokuchasana kwayo kakuhle kunye nokuhambelana kwezinto eziphilayo kunceda ukwandisa ubomi benkonzo yokufakelwa.
3. Ezinye izicelo
I-Hernia patches: I-Hernia patches eyenziwe nge-ePTFE inokuthintela ngokufanelekileyo ukuphindaphinda kwe-hernia, kwaye isakhiwo sayo se-porous sinceda ukuhlanganiswa kwezicubu.
I-sutures yezonyango: I-ePTFE sutures inokuguquguquka okuhle kunye namandla okuqina, anokunciphisa ukunamathela kwezicubu emva kokuhlinzwa.
Iivalve zentliziyo: I-ePTFE ingasetyenziselwa ukwenza iivalve zentliziyo, kwaye ukuqina kwayo kunye ne-biocompatibility kunceda ukwandisa ubomi benkonzo yeevalvu.
4. Iingubo zezixhobo zonyango
I-ePTFE ingasetyenziselwa ukugquma izixhobo zonyango, ezifana neekhathetha kunye nezixhobo zotyando. I-coefficient yayo ephantsi ye-friction kunye ne-biocompatibility inceda ukunciphisa umonakalo wezicubu ngexesha lotyando
Ixesha lokuposa: Apr-27-2025