Ordinary PVC tsis zoo lub zog tensile thiab elongation, thiab nws qhov ntsuas kub yog qhov tsawg, yog li nws tsis hlawv. PVC uas ua tau raws li UL cov kev xav tau feem ntau muaj lub zog zoo thiab lub zog ntev, thiab tuaj yeem muab faib ua cov khoom sib txawv raws li nws siv, uas tsis yooj yim hlawv.
SR-PVC: SR-PVC yog lub semi-txhav PVC, nws tiv taus kub, siab zog, zoo dua rau qhov kub thiab voltage tsis kam tshaj PVC, tsis yooj yim mus hlawv, thiab muaj pungent qaub tsw thaum nws kub thiab tog hauv qhov dej.
Polypropylene (PP): qhov ntom ntom yog li ρ=0.9, feem ntau siv hauv cov xaim hluav taws xob tsawg. Nws muaj lub zog tensile zoo, zoo heev elongation, lub teeb ceeb thawj, yooj yim hlawv, thiab nws tsis hnov tsw ntawm hlawv roj thiab roj thaum hlawv.
Polyethylene (PE): Qhov ntom yog nruab nrab ntawm 0.91-1.26. Nws yooj yim rau hlawv, thiab nws hnov ntxhiab ntawm hlawv paraffin thaum hlawv. Feem ntau siv rau hauv cov xov tooj kab hluav taws xob. Cov PE feem ntau siv tau yog LD-PE, HD-PE thiab FM-PE.
Tsawg-ceev PE (LD-PE): qhov ntom yog ρ=0.91-0.92, uas yog lub teeb nyob hauv qhov hnyav thiab yooj yim hlawv.
High-density PE (HD-PE): Qhov ceev yog ρ=0.94-0.95, uas yog lub teeb thiab yooj yim kom hlawv. Nws yog qhov nyuaj dua LD-PE.
Foamed PE (FM-PE): Cov khoom siv yog mos thiab yooj yim kom hlawv. Muaj hws hws nyob hauv lub tshuab tsom, thiab nws cov kev ua haujlwm rwb thaiv tsev tsis zoo.
