摘要
以提高转化率x(>60％)为目的,按生产SBR 1500标准配方,研究了小试和工业装置聚合速度的差异。结果表明,小试的聚合速度、硫醇的消耗速度比后者快,硫醇在不同聚合阶段的调节作用有很大差别,为提高x,必须强化聚合后期的调节效果。对6种硫醇的调节作用的研究表明,小试所得调节指数r值不能直接用于生产装置。为提高x,建议采用r值大的和小的硫醇混合一次加入,或r值大的硫醇分步加入。
The difference of polymerization rates between the bench-scale experiment and commercial production was investigated, by using the standard SBR 1500 formulation, in order to increase the conversion ratio > 60%. The results showed that both the polymerization and mercaptan consumption rates in bench-scale were higher than those in commercial plant, and the regulating effect of mercaptan at different stages had obvious differences. The regulating effect should be en-hanced at later stages of polymerization for increasing the conversion ratio. The studies on regulating effect of six mercaptans revealed that the regulating indexes of mercaptans from bench-scale experiment could not be directly used in commercial plant. It was suggested that a mercaptans mixture with different regulating indexes would be fed initially, or the mercaptan with high regulating index would be fed gradually, for increasing the conversion ratio.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1990年第5期310-313,共4页
China Synthetic Rubber Industry
关键词
丁苯橡胶
硫醇
乳液聚合
调节反应
butadiene
styrene
emulsion polymerization
mercaptan
conversion ratio
butadiene-styrene copolymer
