摘要
采用负载钛催化剂，在0～30℃下对异戊二烯（Ip）本体沉淀聚合的动力学进行了研究。结果表明，体系在单体相未消失之前为稳态聚合，其稳态聚合速率方程为：Rp＝kpf[Ti]0[Al]0[M]0，即在单体相未消失前，Rp为恒量。计算出Ip本体沉淀聚合的表观活化能为29．7kJ／mol，催化剂利用率为20％～30％，高于溶液聚合法。
The kinetics of the bulk precipitation polymerization of isoprene with the supported titanium catalyst was studied at 0-30℃. The results showed that there was a steady character in this system when the monomer conversion was less than 35%. The kinetic equation of the bulk precipitation polymerization rate was obtained: Rp= kpf[Ti]0 [Al]0 [M]0 The apparent activation energy calculated was 29. 7 kJ/ mol. The catalytic efficiency was 20%-30% which was higher than that of the solution polymerization.
出处
《合成橡胶工业》
EI
CAS
CSCD
1998年第5期292-295,共4页
China Synthetic Rubber Industry
基金
国家自然科学基金
国家"863"计划新材料领域资助
关键词
异戊二烯
催化剂
钛
聚合动力学
本体聚合
橡胶
isoprene
supported titanium catalyst
bulk precipitation polymerization
polymerization kinetics
