文献类型：期刊文献

英文题名：A new method to prepare rubber toughened epoxy with high modulus and high impact strength

作者：Zhou, Hengshi[1];Xu, Shiai[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Minist Educ,Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2014

卷号：121

起止页码：238

外文期刊名：MATERIALS LETTERS

收录：;EI(收录号：20140917407164);WOS:【SCI-EXPANDED(收录号:WOS:000334084600064)】；

基金：This work was supported by the National Science Foundation of China (No. 51073052) and Shanghai Pujiang Program.

语种：英文

外文关键词：Toughened epoxy; Epoxy composites; Mechanical properties

摘要：Although epoxy resins can be substantially toughened by addition of a reactive liquid rubber, the improvement in toughness is inevitably accompanied by a significant loss in elastic modulus and yield strength. This paper presents a novel route for preparing the liquid rubber/epoxy composites with high yield strength, Young's modulus and impact strength. By this new method, the epoxy composites with different grades of carboxyl terminated butadiene acrylonitrile copolymer (CTBN) and cured by different curing agents were prepared, and their mechanical properties were characterized. It is found that no matter what grades of CTBN, also regardless of curing agents, the composites prepared by the new method always exhibit much higher impact strength, yield strength and Young's modulus than the corresponding traditional composites, proving the new method to be somewhat universal. Especially, some CTBN/epoxy composites exhibit even higher yield strength and Young's modulus than that of pure epoxy. (C) 2014 Elsevier B.V. All rights reserved.