Kuyini i-PTFE?
I-PTFE eyaziwa kakhulu ngokuthi "inkosi yepulasitiki", iyi-polymer ye-polymer eyenziwe nge-tetrafluoroethylene njenge-monomer. Yatholakala nguDkt. Roy Plunkett ngo-1938. Mhlawumbe usazizwa ungajwayelekile ngale nto, kodwa uyayikhumbula ipani elinganamatheli esasilisebenzisa? Ipani elinganamatheli limbozwe nge-PTFE coating ebusweni bepani, ukuze ukudla kunganamatheli phansi kwepani, okubonisa ukumelana nokushisa okuphezulu kwe-PTFE kanye nezici zokugcoba eziphezulu. Namuhla, izinto zokusetshenziswa ze-PTFE powder zenziwa imikhiqizo yezimo ezahlukahlukene, njenge-PTFE tubes, i-PTFE thin film, ama-PTFE bars, nama-PTFE plates, asetshenziswa emikhakheni ehlukene. Okulandelayo, sixoxa ngokusetshenziswa kwama-PTFE tubes kumadivayisi ephrinta e-3D.
Ingabe i-PTFE inobuthi?
Isihloko sokuthi i-PTFE inobuthi yini siyaphikiswana kanti i-PTFE empeleni ayinabo ubuthi.
Kodwa lapho i-PFOA (i-Perfluorooctanoic Acid) ifakwa ngaphambilini ezithakweni ze-PTFE, ubuthi bakhishwa uma busetshenziswa emazingeni okushisa aphezulu. I-PFOA kunzima ukuyiqeda endaweni ezungezile, futhi ingangena kubantu nakwezinye izinto eziphilayo ngezinto ezibonakalayo, emoyeni nasemanzini, futhi ngokuhamba kwesikhathi ingaholela emazingeni okuzala aphansi kanye nezinye izifo zesistimu yomzimba. Kodwa manje i-PFOA ivinjelwe yiziphathimandla ukuyifaka ezithakweni ze-PTFE. Yonke imibiko yethu yokuhlola izinto zokusetshenziswa ikhombisa ukuthi ayikho ingxenye ye-PFOA.
Kungani amaphrinta e-3D esebenzisa amashubhu e-PTFE?
Ngokuthuthuka okusheshayo kwe-Times, iphrinta ye-3D iwubuchwepheshe bokwakha ngokushesha, obaziwa nangokuthi ukukhiqiza okungeziwe. Kuyinqubo yokuxhuma noma ukupholisa izinto ngaphansi kokulawulwa yikhompyutha ukukhiqiza izinto ezinobukhulu obuthathu, ngokuvamile kusetshenziswa ama-molecule ewuketshezi noma izinhlayiya zempuphu ukuze zihlangane ndawonye bese ekugcineni zakhe izinto ungqimba ngengqimba. Njengamanje, ubuchwepheshe bokubumba bokuphrinta be-3D buvame ukufakwa: indlela yokubeka ukuncibilika, njengokusetshenziswa kwe-thermoplastic, izinto zensimbi zesistimu yekristalu evamile, isivinini sayo sokubumba sihamba kancane, futhi ukugeleza kokuncibilika kwezinto kungcono;
Kodwa-ke, amaphrinta e-3D anefa lomlando lekhanda, kulula ukulixhuma! Nakuba izinga lokuhluleka kwephrinta ye-3D liphansi, uma selivele lenzekile, ngeke lithinte kuphela ikhwalithi yokuphrinta, kodwa futhi lizochitha isikhathi nezinto zokuphrinta, futhi lize lilimaze umshini. Abantu abaningi basola ukuthi ipayipi lomphimbo lalishisa kakhulu ngoba lenziwe ngesithasiselo. Ngenxa yokuthi izinto zobunjiniyela zidinga izinga lokushisa eliphakeme eliqhubekayo, izidingo zezingxenye ziphezulu kakhulu. Ngakho-ke, iphrinta ye-3D isebenzisa ipayipi le-PTFE njengepayipi lokudla. Izinto eziningi zokusetshenziswa zidinga ukuthuthwa ziye ekhanda lephrinta esimweni sokuncibilika, futhi ipayipi lokuthutha kumele lihlangabezane nezidingo zesikhala sephrinta, ngakho-ke manje abakhiqizi abaningi bashintshela ku-iron fluorine dragon tube eyakhelwe ngaphakathi, i-iron fluorine dragon kanye ne-stainless steel thermal conductivity iphansi, inganciphisa ngempumelelo izinga lokushisa lepayipi lomphimbo, nge-iron fluorine dragon tube, izinga lokuhluleka lokuxhuma lincishiswe kakhulu. Ngakho-ke lokhu kuyisinqumo esingcono kakhulu samaphrinta e-3D.
Uma usebhizinisini lokuphrinta le-3D, ungathanda
Okulandelayo isingeniso esijwayelekile sezimpawu eziyinhloko zamashubhu e-PTFE:
1. Ayinamatheli: Ayisebenzi, futhi cishe zonke izinto azihlanganisiwe kuyo.
2. Ukumelana nokushisa: i-ferroflurone inokumelana nokushisa okuhle kakhulu. Umsebenzi ojwayelekile ungasetshenziswa ngokuqhubekayo phakathi kuka-240℃ no-260℃. Ukumelana nokushisa kwesikhathi esifushane kuya ku-300℃ kanye nephuzu lokuncibilika elingu-327℃.
3. Ukuthambisa: I-PTFE ine-coefficient ephansi yokushayisana. I-coefficient yokushayisana iyashintsha lapho umthwalo ushelela, kodwa inani liphakathi kuka-0.04 no-0.15 kuphela.
4. Ukumelana nesimo sezulu: akukho ukuguga, kanye nokuphila okungcono kokungagugi epulasitikini.
5. Ayinabo ubuthi: endaweni evamile engaphakathi kuka-300℃, ine-inertia yemvelo futhi ingasetshenziswa kwezokwelapha nemishini yokudla.
Ukuthenga amashubhu e-PTFE afanele akukhona nje ukukhetha imininingwane ehlukene yezinhlelo zokusebenza ezahlukene. Okuningi ukukhetha umenzi othembekile. I-Besteflon Fluorine plastic Industry Co., Ltd. igxile ekukhiqizweni kwamapayipi namashubhu e-PTFE asezingeni eliphezulu iminyaka eyi-15. Uma unemibuzo nezidingo, sicela ukhululeke ukuxhumana nathi ukuze uthole iseluleko sobungcweti esengeziwe.
Izihloko Ezihlobene
Isikhathi sokuthunyelwe: Agasti-27-2022