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Acrylate Copolymers as Impact Modifi er for Epoxy Resin

ISSN号：1000-2413
期刊名称：《武汉理工大学学报：材料科学英文版》
时间：0
分类：TQ325.7[化学工程—合成树脂塑料工业] TQ637[化学工程—精细化工]
作者机构：School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430073, China
相关基金：Funded by the National Natural Science Foundation of China（51373129）; the Fundamental Research Funds for the Central University（WUT：2013-IV-011）

作者： WANG Tao WANG Jun CHEN Wei DUAN Huajun YANG Shuang CHEN Xi ZHANG Bin

关键词：丙烯酸酯共聚物, 改性环氧树脂, 冲击改性, 甲基丙烯酸缩水甘油酯, 扫描电子显微镜, 凝胶渗透色谱, 动态力学分析, 力学性能分析, epoxy butyl acrylate glycidyl methacrylate modifier in situ polymerized

中文摘要：

P (BA-GMA )(PBG ) ，有各种各样的分子的重量，被综合由在丁基 acrylate (BA ) 和 glycidyl methacrylate (GMA ) 的 situ 聚合，并且进一步用作一个修饰词改进治好系统的环氧基树脂的全面性质。共聚物被胶化浸透层析(GPC ) 描绘。治好的系统的机械性质，热表演，和阶段行为上的共聚物的各种各样的分子的重量的效果小心地被评估。微分扫描热量测定(DSC ) 和动态机械分析(直接存储器存取) 的试验性的结果证明玻璃转变温度减少了，黝黑的山峰与共聚物的减少的分子的重量变了到更低的温度。治好电影的机械性质分析证明影响力量和破裂坚韧在 PBG 的增加之上显著地增加了，显示修改环氧基树脂树脂的好坚韧。从扫描电子，显微镜学(SEM ) ER/PBG 系统的破裂表面学习，环氧基树脂矩阵的破裂行为从易碎物被改变到坚韧。

英文摘要：

P（BA-GMA）（PBG）, having various molecular weights, was synthesized by in situ polymerization of butyl acrylate（BA） and glycidyl methacrylate（GMA）, and further used as a modifier to improve the comprehensive properties of the epoxy curing system. The copolymers were characterized by gel permeation chromatography（GPC）. The effects of various molecular weights of copolymers on the mechanical properties, thermal performance, and phase behavior of the curing system were carefully evaluated. The experimental results of differential scanning calorimetry（DSC） and dynamic mechanical analysis（DMA） showed that glass transition temperature decreased and the tan δ peak shifted to a lower temperature with decreasing molecular weight of copolymer. Mechanical properties analysis of curing films showed that the impact strength and fracture toughness increased significantly upon the addition of PBG, indicating good toughness of the modified epoxy resins. From scanning electron microscopy（SEM） studies of the fracture surfaces of ER/PBG systems, the fracture behavior of epoxy matrix was changed from brittleness to toughness.

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