Iyini i-PET? - Ukuhlaziywa Okuphelele kwe-Polyethylene Terephthalate
I-PET, noma i-Polyethylene Terephthalate, iyimpahla ye-polymer esetshenziswa kabanzi embonini yamakhemikhali. Kulesi sihloko, sizohlinzeka ngokuhlaziywa okujulile kwencazelo ye-PET, izindawo zokufaka isicelo, inqubo yokukhiqiza kanye nezinzuzo zayo, ukuze kunikezwe abafundi ukuqonda okuphelele kwe-PET njengento ebalulekile.
Incazelo kanye Nezakhiwo Eziyisisekelo ze-PET
Iyini i-PET? Amakhemikhali, i-PET i-polymer ye-thermoplastic eyakhiwe yi-polymerisation ye-terephthalic acid ne-ethylene glycol.Isakhiwo samakhemikhali se-PET sinikeza izici ezinhle kakhulu zemishini ezifana namandla aphezulu, ukumelana nokushisa nokucaca okuhle. Lezi zakhiwo zenza i-PET ibe yinto yokuzikhethela ezimweni eziningi zohlelo lokusebenza, ikakhulukazi emkhakheni wokupakisha.
Izindawo ezisetshenziswa kakhulu ze-PET
I-PET isetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza, igxile ezindaweni ezimbili eziyinhloko: izinto zokupakisha kanye nokukhiqizwa kwefayibha. Embonini yokupakisha, i-PET ivame ukusetshenziswa ekwenzeni imikhiqizo efana namabhodlela epulasitiki, iziqukathi zokudla namafilimu, lapho ukubonakala kwayo kanye nezindawo ezinhle zokuvimbela igesi ziqinisekisa ukuthi ukudla okungaphakathi kwephakeji kuhlala kuhlanzekile.I-PET iphinde isetshenziswe njengempahla eluhlaza yama-synthetic fibers, asetshenziswa kakhulu embonini yendwangu, ikakhulukazi ekukhiqizeni imicu ye-polyester. Izingubo ezenziwe ngamafayibha e-polyester zigqokwa kanzima, ziwashwa kalula futhi ziyashesha ukomisa, okwenza zilungele ukugqokwa kwansuku zonke.
Inqubo yokukhiqiza i-PET
Ukuqonda ukuthi iyini i-PET futhi kudinga ukubheka kabanzi inqubo yayo yokukhiqiza, eyenziwa ngezindlela ezimbili eziyinhloko: isinyathelo esisodwa (i-esterification eqondile) kanye nezinyathelo ezimbili (i-ester exchange). Enkambweni yesinyathelo esisodwa, i-terephthalic acid isabela ngokuqondile nge-ethylene glycol emazingeni okushisa aphezulu kanye nezingcindezi zokukhiqiza i-PET, kuyilapho inqubo yezinyathelo ezimbili, i-ethylene glycol esters ikhiwa kuqala, bese i-polycondensation yenziwa ukukhiqiza i-PET. ukuze kulungiswe umkhiqizo obunjiwe.
Izinzuzo kanye Nokusimama kwe-PET
Iyini i-PET? Ngokombono wokusimama, izinzuzo ze-PET zitholakala ekusetshenzisweni kabusha kwayo okuhle; Imikhiqizo ye-PET ingaphinda isetshenziswe nge-pyrolysis, ukugaywa kabusha kwamakhemikhali nezinye izindlela zokunciphisa ukungcoliswa kwemvelo, futhi amandla aphezulu we-PET kanye nezakhiwo ezingasindi nazo ziyinikeza inzuzo ekwehliseni ukusetshenziswa kwempahla nezindleko zokuthutha. Lezi zici zenza i-PET ibe enye yezinto eziluhlaza ezibalulekile embonini yesimanje.
Isiphetho
Ukufingqa, iyini i-PET? Kuyinto ephezulu yokusebenza kwe-polymer enezinhlobonhlobo zezinhlelo zokusebenza.I-PET idlala indima ebalulekile embonini yesimanje ngenxa yezakhiwo zayo ezinhle kakhulu ze-physicochemical, ububanzi bezinhlelo zokusebenza kanye nokusebenziseka kabusha okuhle. Noma ngabe kusekupakisheni kwezinto empilweni yansuku zonke noma ukukhiqizwa kwefayibha embonini yendwangu, ithonya le-PET likuyo yonke indawo. Ngakho-ke, ukuqonda okujulile ukuthi iyini i-PET kubalulekile ekuqondeni ukuthambekela kwezinto zamakhemikhali zanamuhla.