Yintoni i-PTFE?
I-PTFE eyaziwa ngokuba yi-"plastic king", yi-polymer ye-polymer eyenziwe nge-tetrafluoroethylene njenge-monomer. Yafunyanwa nguGqr. Roy Plunkett ngo-1938. Mhlawumbi usaziva ungaqhelekanga ngale nto, kodwa uyayikhumbula ipani enganamatheliyo esasiyisebenzisa? Ipani enganamatheliyo igqunywe nge-PTFE coating phezu komphezulu wepani, ukuze ukutya kunganamatheli ezantsi kwepani, nto leyo ebonisa ukumelana nobushushu obuphezulu be-PTFE kunye neempawu zokuthambisa eziphezulu. Kule mihla, izinto eziluhlaza ze-PTFE powder zenziwa iimveliso zeemilo ezahlukeneyo, ezinje ngeetyhubhu ze-PTFE, ifilimu encinci ye-PTFE, iibha ze-PTFE, kunye neeplate ze-PTFE, ezisetyenziswa kwiindawo ezahlukeneyo. Okulandelayo, sixoxa ngokusetyenziswa kweetyhubhu ze-PTFE kwizixhobo zeprinta ze-3D.
Ngaba i-PTFE inetyhefu?
Umxholo wokuba i-PTFE inobuthi na uyaphikiswana kwaye i-PTFE ayinabuthi ngokwenene.
Kodwa xa i-PFOA (i-Perfluorooctanoic Acid) yayifakwe kwizithako ze-PTFE ngaphambili, ityhefu yayikhutshwa xa isetyenziswa kumaqondo obushushu aphezulu. I-PFOA kunzima ukuyitshabalalisa kwindalo esingqongileyo, kwaye ingangena ebantwini nakwezinye izinto eziphilayo ngezinto ezibonakalayo, emoyeni nasemanzini, kwaye ngokuhamba kwexesha inokukhokelela kumazinga aphantsi okuchuma kunye nezinye izifo zenkqubo yomzimba yokuzikhusela. Kodwa ngoku i-PFOA ithintelwe ngabasemagunyeni ukuyongeza kwizithako ze-PTFE. Zonke iingxelo zethu zovavanyo lwezinto eziluhlaza nazo zibonisa ukuba akukho nxalenye ye-PFOA.
Kutheni iiprinta ze-3D zisebenzisa iityhubhu ze-PTFE?
Ngophuhliso olukhawulezayo lweThe Times, iprinta ye-3D yiteknoloji yokwenza ngokukhawuleza, eyaziwa ngokuba yimveliso yokongeza. Yinkqubo yokudibanisa okanye yokulungisa izinto phantsi kolawulo lwekhompyutha ukuvelisa izinto ezinemilinganiselo emithathu, ngokubanzi kusetyenziswa iimolekyuli zolwelo okanye amasuntswana omgubo ukuze zidityaniswe kwaye ekugqibeleni zakhe umaleko ngomaleko. Okwangoku, iteknoloji yokubumba yoshicilelo lwe-3D ngokubanzi ifakiwe: indlela yokunyibilikisa ukunyibilika, njengokusetyenziswa kwe-thermoplastic, izixhobo zesinyithi zenkqubo yekristale eqhelekileyo, isantya sayo sokubumba sicotha, kwaye ukunyibilika kokunyibilika kwezinto kungcono;
Nangona kunjalo, iiprinta ze-3D zinembali yentloko ebuhlungu, kulula ukuyixhuma! Nangona izinga lokusilela kweprinta ye-3D liphantsi, xa sele lifikile, aliyi kuchaphazela kuphela umgangatho wokuprinta, kodwa liza kuchitha ixesha kunye nezinto zokuprinta, kwaye lide lonakalise umatshini. Abantu abaninzi bacinga ukuba ityhubhu yomqala yayishushu kakhulu kuba yenziwe ngesongezelelo. Ngenxa yokuba izixhobo zodidi lobunjineli zifuna ubushushu obuqhubekayo obuphezulu, iimfuno zezinto ziphezulu kakhulu. Ke ngoko, iprinta ye-3D isebenzisa ityhubhu ye-PTFE njengetyhubhu yokondla. Izinto ezininzi ezikrwada kufuneka zithuthwe ziye entloko yeprinta kwimeko yokunyibilika, kwaye ityhubhu yokuthutha kufuneka ihlangabezane neemfuno zendawo yeprinta, ngoko ke ngoku abavelisi abaninzi batshintshela kwityhubhu ye-fluorine dragon eyakhelwe ngaphakathi, i-iron fluorine dragon kunye ne-stainless steel thermal conductivity iphantsi, inokunciphisa ngempumelelo ubushushu betyhubhu yomqala, ngetyhubhu ye-fluorine dragon yentsimbi, izinga lokusilela kwe-pluging lincitshiswe kakhulu. Ke olu lolona khetho lulungileyo kwiiprinta ze-3D.
Ukuba ukwishishini leprinta ye-3D, Ungathanda
Oku kulandelayo kukwazisa ngokubanzi iimpawu eziphambili zeetyhubhu ze-PTFE:
1. Ayinamatheli: Ayisebenzi, kwaye phantse zonke izinto azinamatheliswanga kuyo.
2. Ukumelana nobushushu: i-ferroflurone inokumelana nobushushu okugqwesileyo. Umsebenzi oqhelekileyo ungasetyenziswa rhoqo phakathi kwama-240℃ nama-260℃. Ukumelana nobushushu bexesha elifutshane ukuya kuma-300℃ kunye nendawo yokunyibilika engama-327℃.
3. Ukuthambisa: I-PTFE inomlinganiselo ophantsi wokungqubana. Umlinganiselo wokungqubana uyatshintsha xa umthwalo utyibilika, kodwa ixabiso liphakathi kwe-0.04 kunye ne-0.15 kuphela.
4. Ukumelana nemozulu: akukho ukuguga, kwaye ubomi obungcono bokungagugi kwiplastiki.
5. Ayinatyhefu: kwindawo eqhelekileyo engaphakathi kwe-300℃, ine-inertia ye-physiological kwaye ingasetyenziselwa izixhobo zonyango kunye nokutya.
Ukuthenga iityhubhu zePTFE ezifanelekileyo akupheleli nje ekukhetheni iinkcukacha ezahlukeneyo zezicelo ezahlukeneyo. Okungakumbi ukukhetha umenzi othembekileyo. I-Besteflon Fluorine plastic Industry Co., Ltd. igxile ekuveliseni iipayipi zePTFE ezikumgangatho ophezulu kunye neetyhubhu kangangeminyaka eli-15. Ukuba unemibuzo kunye neemfuno, nceda uzive ukhululekile ukuqhagamshelana nathi ukuze ufumane iingcebiso zobungcali ezingakumbi.
Amanqaku Afanayo
Ixesha lokuthumela: Agasti-27-2022