Roj hmab los tiv thaiv corrosion txheej yog ua los ntawm chemically los yog mechanically tiav cov roj hmab los yog hluavtaws roj hmab raws li zaj duab xis-tsim tshuaj, ntxiv rau cov kuab tshuaj, fillers, pigments, thiab catalysts.
1. Chlorinated roj hmab txheej. Cov txheej txheem muaj cov dej tsis zoo, dej ntsev thiab cov tshuaj tsw qab ntsev; Nws muaj qee cov kua qaub thiab alkali corrosion kuj, thiab tuaj yeem tiv taus 10% HCl, H2SO4, HNO3, ntau qhov sib txawv ntawm NaOH thiab ntub Cl2 hauv qab 50 degree. Tab sis nws tsis tiv taus cov kuab tshuaj, thiab muaj kev laus tsis zoo thiab kub tsis kam. Cov txheej yog dav siv hauv nkoj, chaw nres nkoj, tshuaj lom neeg kev lag luam thiab lwm lub sijhawm.
2. Neoprene txheej. Cov txheej yog resistant rau ozone thiab tshuaj, muaj zoo alkali tsis kam, zoo huab cua tsis kam; roj thiab kub tsis kam, thiab tuaj yeem ua rau hauv txheej txheej txheej. Qhov tsis zoo yog qhov ruaj khov tsis zoo; cov txheej yog yooj yim hloov xim, thiab nws tsis yooj yim los ua xim dawb lossis xim xim xim.
3. Chlorosulfonated polyethylene roj hmab txheej. Nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm polyethylene resin nrog chlorine thiab sulfur dioxide (los yog chlorosulfonic acid). Cov txheej muaj ozone kuj zoo heev, huab cua zoo heev, tsis muaj dej nqus, roj tsis kam, thiab kub tsis kam. Nws tuaj yeem siv tau siab tshaj 120 degree yam tsis muaj nkig ntawm -50 degree .
