Kunezinhlobo ezimbili eziyinhloko ze-polypropylene ezitholakalayo: ama-homopolymer nama-copolymer. Ama-copolymer ahlukaniswe kabanzi ngama-block copolymer nama-random copolymers.
Isigaba ngasinye sifanelana kangcono nezinhlelo ezithile kunezinye. I-Polypropylene ivame ukubizwa ngokuthi “insimbi” yemboni yepulasitiki ngenxa yezindlela ezahlukahlukene ezingashintshwa ngazo noma ezenziwe ngezifiso ukuze zifeze kangcono injongo ethile.
Lokhu kuvame ukufezwa ngokufaka izithasiselo ezikhethekile kuyo noma ngokuyikhiqiza ngendlela ethile. Lokhu kuvumelana nezimo kuyisici esibalulekile.
I-polypropylene ye-homopolymeriyibanga lenhloso ejwayelekile. Ungacabanga ngalokhu njengesimo esizenzakalelayo sezinto ze-polypropylene.I-copolymer yebhulokhiI-polypropylene inamayunithi e-co-monomer ahlelwe ngamabhulokhi (okungukuthi, ngephethini evamile) futhi aqukethe noma yikuphi phakathi kuka-5% kuya ku-15% we-ethylene.
I-ethylene ithuthukisa izakhiwo ezithile, njengokumelana nokushayisana ngenkathi ezinye izithasiselo zithuthukisa ezinye izakhiwo.
I-copolymer engahleliwei-polypropylene – ngokungafani ne-block copolymer polypropylene – inamayunithi e-co-monomer ahlelwe ngamaphethini angajwayelekile noma angahleliwe eceleni kwe-molecule ye-polypropylene.
Ngokuvamile zihlanganiswa ne-ethylene ephakathi kuka-1% kuya ku-7% futhi zikhethwa ukuze zisetshenziswe lapho kudingeka khona umkhiqizo othambile nocacile.
Isikhathi sokuthunyelwe: Disemba-05-2022