PPR Cov kav dej

PPR cov kav dej

PPR yog random copolymerized polypropylene synthesized los ntawm (PP thiab PE) roj theem txoj kev. Nws cov qauv yog tus cwj pwm los ntawm kev sib txuas ntawm PE molecules hauv PP molecules, thiab qhov hnyav molecular li ntawm 300, 000 txog 800, 000. Cov kav dej uas tsim los ntawm PPR raw cov ntaub ntawv tseem hu ua random copolymerized polypropylene kav, uas yog cov khoom siv yeeb nkab yas tsim thiab siv rau xyoo 1980s thiab thaum ntxov 1990s. Nrog nws tus kheej kev ua tau zoo heev thiab daim ntawv thov dav dav, nws tau nyob ib qho chaw hauv kev lag luam yeeb nkab yas thiab tau lees paub tias yog cov khoom lag luam ntsuab thiab ib puag ncig zoo.

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