负载钛催化体系陈化对高反式丁二烯-异戊二烯共聚橡胶聚合转化率的影响  

Effect of aging of supported titanium catalyst system on conversion ratio during polymerization of high trans-butadiene-isoprene copolymer

作　　者：杜凯[1] 彭杰[1] 姚薇[1] 李旭东[1] 赵永仙[1] 黄宝琛[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《橡胶工业》2005年第12期716-719,共4页China Rubber Industry

基　　金：国家自然科学基金资助项目(20174021);青岛市科委科学基金资助项目(02-2-kj-yj-30)

摘　　要：以负载型TiCl4/MgCl2-Al(i-Bu)3为催化体系合成高反式丁二烯(Bd)-异戊二烯(Ip)共聚橡胶(TBIR),考察催化体系陈化方式和条件对聚合转化率的影响。结果表明,催化体系陈化有利于提高聚合转化率;三元陈化催化体系的聚合转化率大于二元陈化催化体系。三元陈化催化体系的优化陈化条件为Ip/Ti摩尔比20;Al/Ti摩尔比20;加料顺序TiCl4/MgCl2,Al(i-Bu)3,Ip;温度20℃;时间5～10min。The effect of the aging mode and condition of the supported TIC14/MgClz-Al（i-Bu）3 catalyst system on the conversion ratio during the polymerization of high trans-butadiene（Bd）-isoprene （Ip） copolymer（TBIR） was investigated. The results showed that the aging of catalyst system was beneficial to increase the conversion ratio during polymerization; the conversion ratio of aged ternary catalyst system was greater than that of aged binary catalyst system^and the optimized aging condition of the aged ternary catalyst system was as follows：Ip/Ti mole ratio 20,Al/Ti mole ratio 20,addition order TiCl4→MgCl2→Al（i-Bu）3→Ip,temperature 20℃ and time 5-10 min.

关 键 词：负载钛催化体系 高反式丁二烯-异戊二烯共聚橡胶 丁二烯 异戊二烯 陈化 

分 类 号：TQ330.1[化学工程—橡胶工业]