Dab tsi yog chlorinated polyethylene thiab nws cov yam ntxwv:

1. Chlorinated polyethylene, tseem hu ua CPE hauv lus Askiv, yog ib hom polyethylene. Chlorinated polyethylene (CPE) yog ib yam khoom tau los ntawm kev hloov cov hydrogen atoms ntawm high-density polyethylene (HDPE) nrog cov chlorine atoms. CPE zoo li hmoov dawb, tsis muaj tshuaj lom thiab tsis muaj ntxhiab.
2. Cov polyethylene chlorinated ua los ntawm cov polyethylene siab qis HDPE muaj kev tiv taus kub thiab laus zoo dua li cov polyethylene chlorinated ua los ntawm cov polyethylene siab siab. Feem ntau, polyethylene nrog qhov ceev ntawm 0.93-0.96g / cm3, qhov nruab nrab molecular hnyav ntawm 50000 txog 250000, thiab cov ntsuas yaj ntawm 0.01 thiab 2.0g / 10min feem ntau siv los tsim cov polyethylene chlorinated. Qib ntawm chlorination ntawm chlorinated polyethylene muaj kev cuam tshuam loj rau nws cov khoom. Thaum cov ntsiab lus chlorine tsawg dua 15%, nws yog yas; Thaum cov ntsiab lus chlorine yog 16-24%, nws yog thermoplastic elastomer; Cov roj hmab zoo li elastomers nrog cov ntsiab lus chlorine ntawm 25-48%; Thaum cov ntsiab lus chlorine yog 49-58%, nws yog ib qho semi elastic tawv polymer zoo li tawv; Thaum cov ntsiab lus chlorine ncav cuag 73%, nws dhau los ua brittle resin. Kev ntxiv li ntawm 27% chlorine rau hauv cov polyethylene siab siab ua rau tsis muaj crystallization, thaum ntxiv li ntawm 30% chlorine rau hauv cov polyethylene qis siab uas muaj crystallinity siab dua kuj ua rau tsis muaj crystallization. Ua ib lub roj hmab elastomer, cov ntsiab lus chlorine zoo tshaj plaws hauv 30-40%. Tam sim no, cov ntsiab lus chlorine ntawm cov roj hmab chlorinated polyethylene feem ntau yog nyob rau hauv 25-45%. Thaum cov ntsiab lus chlorine nce ntxiv, kev tiv thaiv roj, kev ua pa, thiab kev tiv thaiv hluav taws zoo dua; Thaum cov ntsiab lus chlorine txo qis, kev tiv thaiv txias, kev ua tau zoo, thiab kev ua haujlwm khoov compressive zoo dua.
2. Cov yam ntxwv ntawm Chlorinated Polyethylene CPE
1) CPE yog cov roj hmab uas muaj cov cua sov thiab cov pa oxygen zoo heev, tiv taus ozone laus, tiv taus acid thiab alkali, thiab cov khoom siv tshuaj lom neeg.
2) CPE muaj roj tsis kam zoo heev, nrog rau kev tiv taus zoo rau ASTM 1 roj thiab ASTM 2 roj, sib piv rau NBR; Kev tiv taus zoo heev rau ASTM No. 3 roj, zoo dua li CR thiab sib piv rau CSM.
3) CPE muaj cov tshuaj chlorine, uas muaj cov khoom zoo heev rau kev tiv thaiv hluav taws thiab muaj cov yam ntxwv ntawm kev sib xyaw thiab tiv thaiv dej ntws. Nws tuaj yeem ua ke nrog cov tshuaj tua hluav taws raws li antimony, chlorinated paraffin, thiab Al (OH) 3 hauv cov feem sib npaug kom tau txais cov ntaub ntawv tiv thaiv hluav taws nrog kev tiv thaiv hluav taws zoo heev thiab tus nqi qis.
4) CPE tsis muaj tshuaj lom, tsis muaj cov hlau hnyav thiab PAHs, thiab ua tau raws li qhov yuav tsum tau ua ntawm ib puag ncig.
5) CPE muaj kev ua haujlwm siab thiab tuaj yeem tsim cov khoom uas ua tau raws li ntau yam kev xav tau. CPE muaj kev ua haujlwm zoo, thiab muaj ntau qib xaiv los ntawm nrog Mooney viscosity ntawm 50-100.