GMA熔融接枝丁苯橡胶的研究  

Research of GMA melt-grafting styrene butadiene rubber

作　　者：向坤[1,2] 罗筑[1,2] 夏忠林[1,2] 洪波[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《弹性体》2014年第5期24-27,共4页China Elastomerics

基　　金：贵州省重大专项[字(2013)6016]

摘　　要：研究了活性单体甲基丙烯酸缩水甘油酯(GMA)对丁苯橡胶(SBR)接枝的影响;添加一定量的共单体苯乙烯(St),在转矩流变仪中制备成SBR-g-GMA接枝物,探讨了GMA、过氧化二苯二甲酰(BPO)的含量以及温度变化对接枝率的影响;利用红外光谱对其进行表征结构;测定接枝物的凝胶含量;使用化学滴定方法测定其接枝率。结果表明,在温度为130℃、GMA的质量分数为5%、BPO的质量分数为0.6%时,其接枝率最高达到2.2%。凝胶含量随BPO加入量的增多而增大。The active monomer glycidyl methacrylate （SBR）was studied in this paper. SBR-g-GMA was prepared in torque rheometer with styrene as a co- monomer, the influence of the content of GMA, BPO and temperature on the grafting rate was studied. The structure of grafted products was characterized by infrared spectroscopy; the gel content of grafted products was determined by dissolution; and the graft ratio was determined by chemical titration. The results showed that when the temperature was 130 ℃ ,the content of GMA was 5wt% ,the content of BPO was 0. 6wt%, the graft ratio reached 2.2 %. The content of gel affected by the content of BPO,in- creased with the increase of the amount of BPO.

关 键 词：甲基丙烯酸缩水甘油酯 熔融接枝 接枝率 凝胶量 丁苯橡胶 

分 类 号：TQ333.1[化学工程—橡胶工业]