摘要
以水和二氯乙基铝(EADC)为引发体系,己烷和氯甲烷为溶剂,在-90℃的条件下,通过溶液法合成丁基橡胶。考察引发剂摩尔分数、引发剂配比、第三组分(DMF)含量等对丁基橡胶分子质量、分子质量分布、单体转化率的影响。结果表明,引发剂摩尔分数在0.085%、聚合40min,在n(EADC)/n(H2O)/n(DMF)=8.28:1:0.75时,得到数均分子质量为29.54×104g/mol,分子质量分布为1.58的丁基橡胶。
The butyl rubber was synthesized by the solution polymerization method, with H2O/EADC as initiator system, hexane and chloride methane as solvent, at --90 ℃. The effects of the initiator concentration, ratio and the third component （DMF） on butyl rubber properties were examined. The results show that optimum condition is initiator concentration 0. 085 %, polymerization 40 min,n（EADC）/n（H2O）/n（DMF） is 8.28 ：1 ： 0.75, butyl rubber of which molecular weight is 29.54× 10^4 g/mol,MWD is 1.58.
出处
《石油化工高等学校学报》
CAS
2012年第5期25-28,34,共5页
Journal of Petrochemical Universities
