Kev txhaj tshuaj molding cov khoom siv feem ntau siv hauv kev txhaj tshuaj molding thiab cov ntaub ntawv yas uas haum rau kev txhaj tshuaj molding muaj xws li PE PP PS thiab lwm cov yas uas muaj lub thermoplasticity thiab tsim nyog rau kev txhaj tshuaj thermal.
PE cov khoom siv: PE tseem hu ua polyethylene. Nws yog ib qho ntawm feem ntau siv cov ntaub ntawv polymer hauv lub neej txhua hnub. Nws yog dav siv hauv kev tsim cov hnab yas, cov yeeb yaj kiab yas thiab cov thoob dej tso mis.
PP khoom siv: polypropylene, polypropylene muaj crystallinity siab thiab tus qauv tsis tu ncua, yog li nws muaj cov yam ntxwv zoo txhua yam. Cov cuab yeej lub zog ntawm polypropylene yog siab dua li ntawm polyethylene, tab sis lawv tseem muaj tsawg hauv cov khoom siv yas, thiab lawv lub zog tensile tuaj yeem ncav cuag 30 MPa lossis siab dua me ntsis. Polypropylene nrog cov isotactic loj dua muaj lub zog loj dua, tab sis raws li isotactic qhov ntsuas nce, qhov cuam tshuam lub zog ntawm cov khoom poob, tab sis nws tsis hloov tom qab qee tus nqi.
PS cov khoom siv: PS yog polystyrene.
