I-PTFE iyipulasitiki ehlala isikhathi eside kakhulu eyaziwayo njengamanje.Isetshenziswa kabanzi ezimbonini ezahlukahlukene ezinezindawo ezinokhahlo.Ngenxa yokusebenza kwayo okuhle kakhulu, kancane kancane isibe umkhiqizo ojwayelekile emikhiqizweni yepulasitiki (Yonke ibizwa ngePolytetrafluoroethylene).Ngakho-ke, kukhona futhi abakhiqizi abaningi ngokwengeziwe abakhiqiza imikhiqizo enjalo.I-PTFE ingenziwa ibe yizinhlobo eziningi zemikhiqizo, njengamashubhu, izinduku, amapuleti, ama-gaskets, amafilimu, njll., asetshenziswa emikhakheni ehlukahlukene.
Yini i-PTFE tube?
I-Polytetrafluoroethylene (efushanisiwe ngokuthi i-PTFE), evame ukwaziwa ngele-"Plastic King", i-polymer yamangqamuzana aphezulu etholwe nge-polymerizing tetrafluoroethylene njenge-monomer, emhlophe noma i-translucent.Le nto ayinazo izithako zombala noma izithasiselo, futhi inezici zokuphikiswa kwe-asidi ne-alkali, ukumelana nezinyibilikisi ezihlukahlukene zezinto eziphilayo, futhi cishe ayincibiliki kuzo zonke izincibilikisi.Ngaphezu kwalokho, i-PTFE inebanga lokushisa elibanzi futhi ingasetshenziswa isikhathi eside ku -65°C~260°C ngaphansi kwengcindezi evamile.Ikhiqizwa ngendlela ye-paste extrusion.Ishubhu ye-PTFE ekhiqizwa kusetshenziswa i-paste extrusion iyavumelana nezimo futhi ingakwazi ukwenza ishubhu ye-PTFE enobubanzi bangaphakathi bube buncane obungango-0.3 mm bufika kubukhulu obungu-100 mm nobukhulu bodonga bube buncane njengo-0.1 mm kuya ku-2 mm.Ngakho-ke, ishubhu ye-polytetrafluoroethylene (PTFE) ingumkhiqizo oguquguquka kakhulu ohlinzeka ngezinhlelo eziningi ezahlukene ezimbonini eziningi ezahlukene.
Kungani amashubhu e-PTFE esetshenziswa kabanzi:
1. Ukumelana nokushisa okuphezulu, okungancibiliki kunoma iyiphi i-solvent.Ingakwazi ukumelana nezinga lokushisa eliphezulu ukufika ku-300 °C ngesikhathi esifushane, futhi ngokuvamile ingasetshenziswa ngokuqhubekayo phakathi kuka-200 °C no-260 °C, ngokuzinza okuphawulekayo kokushisa.
2. Ukumelana nokushisa okuphansi, ukuqina okuhle kwemishini ekushiseni okuphansi, ngisho noma izinga lokushisa lehla liye ku -65 ℃, ngeke libe ne-embrittled, futhi lingakwazi ukugcina ukuphakama okungu-5%.
3. Ukumelana nokugqwala, okungenayo kumakhemikhali amaningi nezincibilikisi, amelana nama-asidi aqinile nama-alkali, amanzi nezincibilikisi ezihlukahlukene zezinto eziphilayo, kungavikela izingxenye kunoma yiluphi uhlobo lokugqwala kwamakhemikhali.
4. Ukumelana nokuguga, ngaphansi komthwalo omkhulu, kunezinzuzo ezimbili zokumelana nokugqoka nokungabambeleli.Impilo engcono kakhulu yokuguga kumapulasitiki.
5. Ukugcoba okuphezulu, i-coefficient ephansi yokungqubuzana phakathi kwezinto eziqinile.I-coefficient of friction iyashintsha lapho umthwalo uslayida, kodwa inani liphakathi kuka-0.05-0.15 kuphela.Ngakho-ke, inezinzuzo zokumelana nokuqala okuphansi nokusebenza kahle kokwenza ama-bearings.
6. Ukunganamatheli wukushuba kwendawo okuncane kakhulu kwezinto eziqinile, futhi akunamatheli kunoma yiziphi izinto.Cishe zonke izinto ngeke zinamathele kukho.Amafilimu azacile kakhulu aphinde abonise izinto ezinhle ezinganamatheli.
7. Ayinaphunga, ayinambitheki, ayinabo ubuthi, inert physiologically, futhi ayinakho ukusabela okungekuhle uma ifakwa emzimbeni njengemithambo yegazi nezitho zokwenziwa isikhathi eside.
8. Ilula futhi iyavumelana nezimo.Yehlisa kakhulu amandla okusebenza komsebenzisi.
Okunye ukusetshenziswa okuvamile kwamashubhu e-PTFE:
1.Imboni Yamakhemikhali
Ngenxa yokumelana kwawo namakhemikhali amaningi cishe kuwo wonke amakhemikhali, amashubhu e-PTFE alungele ukusetshenziswa embonini yamakhemikhali.Lokhu kubandakanya imboni ye-semiconductor.Izinqubo zesimanje ekukhiqizweni kwe-semiconductor zidinga ukulinganisa okuphephile nokuthuthwa koketshezi olubolayo (ama-asidi nezisekelo).Lokhu kungalimaza kakhulu ishubhu lokulethwa ngesikhathi esifushane.
2. Imboni yezimoto
Enjinini yemoto, amashubhu ekhwalithi ephezulu enziwe nge-PTFE asetshenziselwa ukuhwamuka kukaphethiloli namareyili kaphethiloli.Okufana namapayipi kaphethiloli, amapayipi e-turbocharger, amapayipi apholile, amapayipi amabhuleki azishintshayo, amapayipi amabhuleki esithuthuthu, amapayipi enjini kadizili, amapayipi omjaho namapayipi okuqondisa amandla.Izici zokushisa okuphezulu nokumelana nokushisa okuphansi, ukumelana nokucindezela okuphezulu, ukumelana nokugqoka kanye nokumelana nokugqwala kwe-PTFE tube kuyenza ibe nempilo ende yesevisi ngaphandle kokushintshwa njalo.
3. Imboni yokunyathelisa ye-3D
Ekunyatheliseni kwe-3D, i-filament kufanele idluliselwe ku-nozzle yokunyathelisa, okumele yenziwe ebangeni lokushisa eliphezulu.I-PTFE tubing iyi-polymer ekhethwa kakhulu embonini yokuphrinta ye-3D ngenxa ye-coefficient yayo yokushisa ephezulu kanye nezakhiwo ezinganamathele, ezisiza ukushelela izinto kalula ukusuka ku-nozzle.
4.Imboni yezokwelapha
Izakhiwo ezikhethekile zamashubhu e-PTFE zihlanganisa nesakhiwo esingaphezulu esihlanzekile.Kule minyaka eyishumi edlule, ishubhu ye-PTFE ibilokhu isetshenziswa kakhulu kumishini yezokwelapha.Ngenxa ye-coefficient ephansi yokungqubuzana kwe-PTFE tubing, kusho ukuthi inendawo ebushelelezi kakhulu engenzi imaski noma kusize ukukhula kwamagciwane.Phakathi kwabo, amapayipi asetshenziselwa ama-cannulas, ama-catheter, ama-pipettes nama-endoscopes.
5. Imboni yokudla
Ngenxa yokuhlanza kwayo kalula kanye nezakhiwo ezingezona izinduku, amashubhu e-PTFE angasetshenziswa embonini yokudla.Ikakhulukazi, amashubhu enziwe nge-PTFE engagcwalisiwe afanelekile ngenxa yokungathathi hlangothi kwawo ngokomzimba futhi athobela imihlahlandlela ye-US Food and Drug Administration.Ngakho-ke, kuye kwafakazelwa ukuthi ayinabungozi ekuthintaneni nepulasitiki nanoma yiluphi uhlobo lokudla.
Ukuthenga ishubhu ye-PTFE efanele akukhona nje kuphela ngokukhetha imininingwane ehlukene yezinhlelo zokusebenza ezahlukene.Okuningi ukukhetha umkhiqizi onokwethenjelwa.I-Besteflon Fluorine plastic Industry Co., Ltd. igxile ekukhiqizeni amapayipi namashubhu ekhwalithi ephezulu we-PTFE iminyaka engu-15.Uma kukhona imibuzo nezidingo, sicela ukhululeke ukuxhumana nathi ukuze uthole iseluleko esithe xaxa sochwepheshe.
Izihloko Ezihlobene
Isikhathi sokuthumela: Aug-13-2022