1) CPE yog ib hom roj hmab uas muaj roj khov, uas muaj cov cua kub zoo heev, oxygen oxygen, kev laus ozone, acid thiab alkali tsis kam thiab tshuaj lom neeg cov khoom.
2) CPE muaj cov roj ua tau zoo, ntawm cov roj ASTM No.1 thiab cov roj ASTM No.2 zoo heev, sib npaug nrog NBR; ASTM No.3 roj ua tau zoo heev, zoo dua rau Cr, sib npaug rau CSM.
3) CPE muaj cov tshuaj chlorine, uas muaj cov nplaim hluavtaws zoo thiab tiv thaiv kev xeb tawm. Cov nplaim hluavtaws rov nrog cov nplaim hluavtaws zoo thiab tsis tshua muaj nqi tuaj yeem tau txais los ntawm qhov kev faib ua kom zoo ntawm cov nplaim hluav taws kub retardant, chlorinated paraffin thiab Al (OH) 3.
4) CPE yog tsis muaj tshuaj lom, tsis muaj hlau nyhav thiab PAHs, uas ua tau raws li cov cai ntawm kev tiv thaiv ib puag ncig.
5） CPE muaj qhov kev ua haujlwm siab thiab tuaj yeem ua kom tau raws li ntau yam kev ua tau zoo. CPE muaj cov txheej txheem zoo, Mooney viscosity (ml121 1 + 4) yog nruab nrab ntawm 50-100, muaj ntau hom npe rau xaiv.
