摘要
采用镍系催化剂用于丁苯嵌段共聚物 (SBS)加氢反应 ,考察了反应温度、压力、催化剂用量等对加氢反应的影响 ,得到较佳的加氢反应工艺条件 :加氢反应温度 5 5～ 6 5℃ ,反应压力大于 2 .5MPa,催化剂用量为 0 .0 5～ 0 .1g/10 0 g聚合物。该催化剂选择性好 ,可使聚合物中的共轭二烯烃段有效加氢 ,其加氢度 >98% ,苯环加氢度 <5 %。同时对加氢前后聚合物微观结构、物性变化及老化性能进行了研究。
Effect on SBS hydrogenation of temperature, pressure and Ni concentration were investigated. This catalyst has high activity and good selectivity. The hydrogenation result show that SBS copolymer has a hydrogenation degree of polybutadiene phase more than 98%, and polystyrene phase less than 2% when reaction temperature 55～65℃, pressure more than 25kg/cm^2, Ni concentration 0.07～0.1g/100g Polymer, reaction time 3 hours. And also the changes of polymer physical and mechanical properties before and after hydrogenation have been studied. The hydrogenated polymer has better aging properties than the original polymer.
出处
《弹性体》
CAS
2003年第5期5-8,共4页
China Elastomerics
基金
中石化集团公司攻关项目 (49992 7)
关键词
丁苯嵌段共聚物
催化剂
加氢度
性能
结构分析
styrene-butadiene block copolymer
hydrogenation degree
hydrogenated catalyst
