I-Polytetrafluoroethylene (I-PTFE) into yokwenziwa eyasungulwa ngephutha ngasekupheleni kwawo-1930 ngenkathi usokhemisi ezama ukwakha uhlobo olusha lwesiqandisi esisekelwe ku-perfluorethylene.
I-Polytetrafluoroethylene (PTFE) yinto yokwenziwa eyasungulwa ngephutha ngasekupheleni kwawo-1930 ngenkathi usokhemisi ezama ukwakha uhlobo olusha lwesiqandisi esisekelwe ku-perfluorethylene.Kunokuba athole i-chlorofluorocarbon, usosayensi wamangala ukuthola ukuthi i-perfluorethylene esetshenziswe kule nqubo isabela ngokuqukethwe kwensimbi esitsheni sayo futhi yenziwa i-polymer ngaphansi kwengcindezi.Ngaphansi kweshumi leminyaka kamuva, le nto entsha yayisatshalaliswa ngezinga lezentengiso futhi yagcina inelungelo lobunikazi ngaphansi kwegama elithi polymer®.Kungaba eminye iminyaka engu-20 ngaphambi kokuba le nto ishaye epanini lokuthosa futhi yaziwe ngokuthi i-cookware yokuqala engelona induku ye-cookware.Eqinisweni, le nto yayisetshenziselwa ezinye izinjongo ezihlukahlukene ekuqaleni.
Phakathi neMpi Yezwe II, i-PTFE yasetshenziselwa ukuvimbela ukuphunyuka kwezinto ezikhipha imisebe endaweni ekhethelwe ukukhiqiza ibhomu le-athomu lokuqala e-US, inhloso ebizwa ngokuthi i-Manhattan Project.Le ndawo imele ucezu olumangalisayo lwezindlu ezithengiswayo ezinamafidi-skwele angu-2,000,000 (609,600 sq. metres) lapho okungafakwa khona i-uranium hexafluoride.Akukhona nje kuphela ukuthi le nto inobuthi obuphezulu futhi iyagqwala ngokwayo, kodwa futhi yakha igesi eyingozi eyaziwa ngokuthi i-hydrogen fluoride lapho kukhona amanzi noma umhwamuko wamanzi.Ngenxa yalesi sizathu, i-PTFE yasetshenziswa njengesimbozo sokufakela amapayipi ukuze kube nobufakazi bokuvuza.
Izakhiwo ezihlukile zokuvikela lezi zinto zenze ukusetshenziswa kwayo ezingxenyeni ze-elekthronikhi kwaba kuhle.Phakathi kokunye, ayi-conductive, okwenza imelane nezinkundla zikagesi eziphakeme.Iphinde imelane kakhulu namanzi, ukushisa, nokugqwala kwamakhemikhali.Eqinisweni, iyaqhubeka nokusetshenziswa ukukhiqiza imishini yaselabhorethri kanye nezinsiza ezihlangana ne-hydrofluoric acid, ebingancibilikisa ezinye izinto, ngisho nengilazi.
I-PTFE futhi inezinto eziphansi kakhulu zokungqubuzana, ezivezwa njenge-coefficient ekhukhulayo.Lesi silinganiso sihlobene futhi siyahluka ngokuya ngezinto ezixhunywe ukuze kukhiqizwe noma kulingise ukungqubuzana.Mayelana namapulasitiki, ukungqubuzana kuvame ukubonwa ngokumelene nensimbi epholishiwe.Ukubeka i-coefficient ephansi yokungqubuzana kwe-PTFE endaweni efanele, iyona kuphela impahla engaphezulu yokwenziwa eyaziwa lapho amaphedi ozwane wesigcilikisha ahlulekayo ukunamathela khona.Le khwalithi iyenza ifaneleke ukukhiqiza izingxenye ezidinga ukumelana nokungqubuzana, njengamagiya nama-ball bearings.
Lokhu okubalulekile kwagcina kwethulwa ezindlini zaseMelika nguMarion Trozzolo, umsunguli weLaboratory Plasticware Fabricators.Nakuba i-Trozzolo yayikhiqiza amathuluzi esayensi ane-polymer® ehlanganiswe ne-polymer® iminyaka eminingana, wakhuthazwa unjiniyela ongumFulentshi owakuthola kuwukunamathela okungeyona induku kwempahla yakhe yokudoba kangangokuthi kamuva waphatha ngayo amabhodwe namapani omkakhe.Nakuba lokhu kuhlola kuholele ekukhiqizweni kwe-cookware eyaziwa ngokuthi i-Tefal (T-Fal®) e-France maphakathi nawo-1950s, i-Trozzolo yaba umkhiqizi wokuqala wase-US wezitsha zokupheka ezine-polymer®.Eqinisweni, "I-Happy Pan," eyethulwe ku-1961, yazuza indawo yokubaluleka komlando e-Smithsonian Institute kanye ne-Trozzolo igama lokuhlukanisa e-Plastics Hall of Fame.
Isikhathi sokuthumela: Sep-01-2020