Kunezinhlobo ezahlukene zezinkomishi zamanzi zepulasitiki, futhi akunakugwemeka ukuthi sizogqama lapho sikhetha izinkomishi zamanzi zepulasitiki.
Ukuze wazise wonke umuntu kabanzi mayelana nezinkomishi zamanzi epulasitiki futhi akwazi ukukhetha izinkomishi zabo zamanzi zepulasitiki ezizithandayo, ake ngigxile ekwethuleni umehluko phakathi kwe-PC ne-PP ezintweni zenkomishi yamanzi epulasitiki.
I-PC isifinyezo sesiNgisi se-polycarbonate, enye yepulasitiki evamile.Le nto ayinabo ubuthi futhi isetshenziselwa ikakhulukazi ukwenza amabhodlela ezingane, izinkomishi zasemkhathini, njll. Ngenxa yokuthi iqukethe i-bisphenol A, bekuyimpikiswano.
Ngokombono, inqobo nje uma i-100% ye-bisphenol-A iguqulwa ibe isakhiwo sepulasitiki ngesikhathi sokwenziwa kwe-polycarbonate, kusho ukuthi ayikho i-bisphenol-a nhlobo emkhiqizweni, futhi ayikho ingozi empilweni.Kodwa-ke, uma amanani amancane e-BPA engaguqulwa abe isakhiwo sepulasitiki se-polycarbonate, angase akhululwe abe ukudla noma iziphuzo, okusongela impilo nokuphepha kwabasebenzisi, ikakhulukazi intsha.
I-PP isifinyezo sesiNgisi se-polypropylene futhi inokumelana okuhle nokushisa.Umkhiqizo ungenziwa inzalo emazingeni okushisa angaphezu kuka-100 degrees Celsius futhi ngeke ukhubazeke ku-150 degrees Celsius ngaphandle kwamandla angaphandle.
I-Polypropylene ingenye yepulasitiki esetshenziswa kakhulu kuhhavini we-microwave.Kodwa-ke, ngemva kophenyo ngokucophelela, sizothola ukuthi i-polycarbonate emakethe ivame ukubiza kakhulu kunemikhiqizo ye-polypropylene, futhi amakhasimende athambekele ekulandeleni umqondo "wokubiza kakhulu, ikhwalithi engcono".Eqinisweni, umehluko wentengo kungenxa yokuthi intengo yamanje yethani le-polycarbonate emakethe iphakeme kakhulu kunenani lethani le-polypropylene.
Ukuqhathanisa lezi zinto ezimbili, kungatholakala ukuthi i-polypropylene inokumelana nokugqoka okubi kakhulu kune-polycarbonate, ngakho-ke lapho wenza izinkomishi ezisobala, i-polycarbonate ngokuvamile isetshenziswa njengento.Imikhiqizo ye-polycarbonate mihle kakhulu kunemikhiqizo ye-polypropylene.Kodwa-ke, ngombono wokuphepha, izinga lokushisa lokucubungula lepulasitiki ye-polypropylene lifinyelela ku-170 ~ 220 degrees Celsius, ngakho amanzi abilayo awakwazi ukubola, ngakho-ke i-polypropylene iphephile kune-polycarbonate.
Isikhathi sokuthumela: Mar-12-2024