Novel strong acid-resistant modified chlorosulfonated polyethylene rubber

The invention belongs to the technical field of acid-resistant rubber, and particularly relates to novel strong acid-resistant modified chlorosulfonated polyethylene rubber. A preparation method comprises the following steps: firstly, connecting chlorosulfonated polyethylene with butenedioic acid through a covalent bond by utilizing a surface polymerization reaction to prepare a polychlorobutene-poly(chlorosulfonated polyethylene) copolymer; then modifying the surface of the copolymer by using polydimethylsiloxane to prepare modified chlorosulfonated polyethylene rubber; and finally, uniformlymixing the modified chlorosulfonated polyethylene rubber, an antioxidant, a plasticizer, filler and an accelerant, and internally mixing the mixture in an internal mixer, thereby preparing the novelstrong acid-resistant modified chlorosulfonated polyethylene rubber. 本发明属于抗酸性橡胶技术领域，尤其涉及一种新型耐强酸改性氯磺化聚乙烯橡胶。本发明首先利用表面聚合反应将氯磺化聚乙烯与丁烯二酸通过共价键连接制备聚氯丁烯-聚氯磺化聚乙烯共聚物；然后利用聚二甲基硅氧烷对共聚物表面进行修饰后得到改性的氯磺化聚乙烯橡胶；最后将改性的氯磺化聚乙烯橡胶、抗氧化剂、增塑剂、填料、促进剂混合均匀