Ibhodi le-PTFE (eyaziwa nangokuthi ibhodi le-PTFE, ibhodi le-Teflon, ibhodi le-Teflon) ihlukaniswe yaba izinhlobo ezimbili: ukubumba nokuphenduka.Imikhiqizo yayo isetshenziswa kabanzi futhi inezici ezibanzi kakhulu ezibanzi: ukumelana nezinga lokushisa eliphezulu neliphansi (-192°C-260°C), ukumelana nokugqwala (i-asidi eqinile, i-alkali eqinile, i-aqua regia, njll.), ukumelana nesimo sezulu, ukugqumisa okuphezulu, ukugcoba okuphezulu, ukunganamatheli, okungeyona ubuthi nezinye izici ezinhle kakhulu.I-Polytetrafluoroethylene (isifinyezo sesiNgisi sithi Teflon noma [PTFE, F4]), eyaziwa ngele-“Plastic King”, igama lokuhweba laseShayina elithi “Teflon”, “Teflon” (teflon), “Teflon” , “Teflon”, “Teflon” njalo njalo.
Kuyinhlanganisela yamangqamuzana ephezulu eyenziwe i-polymerized nge-tetrafluoroethylene, futhi ukwakheka kwayo okwenziwe lula yi--[-CF2-CF2-]n-, enokuqina okuhle kakhulu kwamakhemikhali nokungagqwala (i-polytetrafluoroethylene kubhekiselwa kuyo ngokuthi i-PTFE noma i-F4, ingenye yokugqwala okukhulu kakhulu. -izinto ezimelana nokugqwala emhlabeni namuhla, "i-Plastic King" yaziwa kakhulu ngokuthi i-polytetrafluoroethylene, iyipulasitiki ekwazi ukumelana nokugqwala. ngayo, ngakho-ke ibizwa ngokuthi inkosi yepulasitiki.Ayizweli kuwo wonke amanye amakhemikhali ngaphandle kwe-sodium encibilikisiwe yensimbi kanye ne-fluorine ewuketshezi.I-non-stick, ukufakwa kukagesi nokumelana nokuguga okuhle, ukumelana nokushisa okuhle kakhulu (kungasebenza isikhathi eside ekushiseni kwe- +250°C kuya ku-180°C). I-PTFE ngokwayo ayiyona into enobuthi kubantu, kodwa isetshenziswa enqubweni yokukhiqiza Enye yezinto ezingasetshenzwa ze-perfluorooctanoate ammonium (PFOA) ithathwa njengengaba umdlavuza.
Izinga lokushisa -20～250°C (-4～+482°F), okuvumela ukupholisa kungazelelwe nokushisisa okungazelelwe, noma okunye ukusebenza kokubanda noma kushisa.
Ingcindezi -0.1～6.4Mpa (I-vacuum egcwele ukuya ku-64kgf/cm2) (I-vacuum egcwele ukuya ku-64kgf/cm2)
Ukukhiqizwa kwayo kuxazulule izinkinga eziningi emkhakheni wemboni yamakhemikhali, i-petroleum kanye nemithi ezweni lakithi.Izigxivizo ze-PTFE, ama-gaskets, ama-gaskets, ama-PTFE seal, nama-gaskets enziwe ngokumiswa kwe-polymerized PTFE resin molding.Uma kuqhathaniswa namanye amapulasitiki, i-PTFE inezici zokumelana nokugqwala kwamakhemikhali, futhi iye yasetshenziswa kabanzi njengempahla yokuvala kanye nezinto zokugcwalisa.
Imikhiqizo yayo ephelele yokubola okushisayo cishe ku-500 degrees Celsius ihlanganisa i-tetrafluoroethylene, i-hexafluoropropylene ne-octafluorocyclobutane, ezobolisa amagesi aqukethe i-fluorine agqwala kakhulu emazingeni okushisa aphezulu.
Isikhathi sokuthumela: Jan-17-2023