Cov khoom siv rau cov thawv yas muaj xws li polyethylene, polypropylene, thiab polyvinyl chloride.
Cov lus piav qhia tshwj xeeb ntawm cov khoom siv lub thawv yas yog raws li hauv qab no:
1. Polyethylene
Polyethylene yog cov yas thermoplastic uas muaj kev ruaj khov thiab muaj kev cuam tshuam. Cov thawv yas ua los ntawm nws feem ntau yog siv los khaws thiab thauj cov khoom hnyav xws li khoom noj thiab tshuaj. PE cov thawv yas kuj muaj cov dej noo- pov thawj, tsis muaj plua plav, thiab tiv thaiv- cov khoom sib kis.
2. Polypropylene
Polypropylene yog lwm cov khoom siv yas uas feem ntau siv. Nws muaj lub zog zoo thiab rigidity, nrog rau qee qhov kev kub ntxhov thiab tshuaj lom neeg corrosion kuj. PP lub thawv yas feem ntau yog siv los khaws cov khoom uas yuav tsum tau muaj kev ruaj ntseg dua, xws li precision mechanical parts and electronic products. Nws zoo heev toughness ua rau lub thawv yas tsis tshua muaj kev tawg thaum raug cuam tshuam.
3. Polyvinyl Chloride
Cov thawv yas ua los ntawm polyvinyl chloride muaj cov huab cua zoo heev thiab cov khoom tsis muaj dej, yog li lawv feem ntau siv rau sab nraum zoov cia thiab tsheb thauj mus los. PVC lub thawv yas kuj muaj qhov zoo thauj khoom -cov kabmob muaj peev xwm thiab UV tsis kam, tso cai rau lawv ua haujlwm ruaj khov hauv ntau qhov chaw.
