文献类型：期刊文献

英文题名：Preparation of chlorosulfonated polyethylene by the gas-solid method

作者：Zhao, Ruofei[1]; Cheng, Shujun[1]; Shun, Yan[1]; Huang, Yongjun[1]

机构：[1]E China Univ Sci & Technol, Res Inst Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2001

卷号：81

期号：14

起止页码：3582

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：2001386652319);WOS:【SCI-EXPANDED(收录号:WOS:000169984700025)】；

语种：英文

外文关键词：chlorosulfonated polyethylene; chlorinated polyethylene; chlorosulfonation; gas-solid method

摘要：Chlorosulfonated polyethylene (CSM) has been prepared by the gas-solid method in a tank reactor using chlorinated polyethylene (CPE) and a gaseous mixture of chlorine and dioxide sulfur. Sulfur content of CSM determined by element analysis is used as a reference for the quantitative determination of the degree of chlorosulfonation. The effects of reaction temperature, effective gaseous mixture concentration, particle size of CPE, and the ratio of chlorine to dioxide sulfur on chlorosulfonation are investigated. The results indicate that with the increment of reaction temperature within the range of from 30 to 50 degreesC, the rate of chlorosulfonation during the later reaction period (15-25 min) is markedly increased and the prepared CSM has higher sulfur content. it was also found that the rate of chlorosulfonation increases with the effective gaseous mixture concentration, and that the ratio of chlorine to dioxide sulfur is preferably 1 : 1. It was proven that HCl, by-product of the chlorosulfonation, can accelerate the rate of chlorosulfonation when the volume concentration of HCl is lower than 40%, and that the presence of oxide results in higher sulfur content of the resultant CSM. (C) 2001 John Wiley & Sons, Inc.