极性添加剂存在下铝-镍催化体系的苯乙烯-异戊二烯-丁二烯共聚物的氢化反应  

Hydrogenation of styrene-isoprene-butadiene copolymer in the presence of polar additive with aluminum-nickel catalyst system

作　　者：孙强[1,2] 李杨[1,2] 李嵬[1,2] 张春庆[1,2] 李战胜[1,2] 王玉荣[1,2] 

机构地区：[1]大连理工大学化工学院精细化工国家重点实验室,辽宁大连116012 [2]大连理工大学化工学院辽宁省高分子科学与工程重点实验室,辽宁大连116012

出　　处：《合成橡胶工业》2011年第5期352-357,共6页China Synthetic Rubber Industry

基　　金：国家"八六三"计划资助项目(2007AA03Z532);国家自然科学基金资助项目(20874008)

摘　　要：采用负离子聚合法合成苯乙烯-异戊二烯-丁二烯三元共聚物(SIBR),并对其结构进行了表征;研究了结构调节剂N,N,N',N'-四甲基乙二胺(TMEDA)、二乙二醇二甲醚(2 G)和四氢呋喃(THF)作外加添加剂时,对三异丁基铝(简称Al)/环烷酸镍(简称Ni)体系(Al与Ni的摩尔比为5)催化SIBR氢化反应的影响。结果表明,在50℃,苯乙烯质量分数为25%、异戊二烯和丁二烯质量分数为75%(二者质量比为1/1),TMEDA/n-BuLi(摩尔比)为1.5的条件下,可合成相对分子质量在10×104左右、多分数指数小于1.10的SIBR;TMEDA、2 G或THF极性添加剂的加入可使SIBR的氢化反应更加温和、加氢度更能有效调控;在所研究的添加剂用量范围内,3种添加剂对SIBR加氢度的影响程度由大到小依次为TMEDA、2 G、THF。Styrene-isoprene-butadiene terpolymer（SIBR） was synthesized by anionic polymerization,and its structure was characterized.The effect of N,N,N′N′-tetramethylethylenediamine（TMEDA）,diethylene glycol di-methyl ether（2 G） and tetrahydrofuran（THF） as external additives on hydrogenation reaction of SIBR catalyzed with triisobutyl aluminium（simplified as Al）/nickel naphthenate（simplified as Ni） catalyst system（mole ratio of Al to Ni 5） was studied.The results showed that the SIBR with relative molecular mass 10×104,polydispersity index no more than 1.10 could be synthesized under the conditions of temperature 50 ℃,the mass fraction of styrene 25%,mass fraction of isoprene and styrene 75%（mass ratio the two 1/1）,TMEDA/n-BuLi（mole ratio）1.5.The hydrogenation reaction of SIBR was milder,the regulation and control of hydrogenation degree was more effective when polar additives TMEDA,2 G and THF were added.In the range of additive levels in this study,the order of influencing SIBR hydrogenation degree from large to small for the three additives was TMEDA,2 G,THF.

关 键 词：负离子聚合 苯乙烯-异戊二烯-丁二烯三元共聚物 三异丁基铝 环烷酸镍 极性添加剂 氢化反应 

分 类 号：TQ330.1[化学工程—橡胶工业]