将丙烯酸丁酯（BA）与甲基丙烯酸缩水甘油酯（GMA）进行乳液共聚合以制备环氧型聚丙烯酸酯橡胶（ACM）,通过对ACM中凝胶含量及环氧基开环率的对比研究,探讨了不同反应条件对凝胶含量的影响。结果表明,在反应体系中加入20%的第二单体丙烯酸乙酯（EA）、选择复合引发体系、反应温度控制在30℃以及在反应体系对单体需求处于饥饿状态下投料可抑制BA链转移和GMA中的环氧基开环,聚合物中凝胶含量可低达2.9%。
The epoxy acrylic rubber was prepared by emulsion copolymerization of butyl acrylate（BA） and glycidyl methacrylate（GMA）.By a comparative study on the ratio of epoxy-opening and gel content,the influence of the different reactive conditions on gel content was discussed.The results show that ethyl acrylate（EA） content,organic redox complex initiating system,reactive temperature of 30 ℃ and monomer feeding in ＂starve＂ state can restrain intermolecular transferring of BA and ring-opening of epoxy groups of GMA and decrease gel content.The gel content is 2.9%.
参考文献
| [1] | Wootthikanokkhan J.;Tunjongnawin P. .Investigation of the effect of mixing schemes on cross-link distribution and tensile properties of natural-acrylic rubber blends[J].Polymer Testing,2003(3):305-312. |
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