含马来酸酐的活性四嵌段共聚物用于增韧环氧.docx

Improving the toughness of epoxy with a reactive tetrablock copolymercontaining maleic anhydride含马来酸酐的活性四嵌段共聚物用于增韧环氧ABSTRACT: Reactive block copolymers (BCPs) provide a unique means for toughening epoxy thermosets because covalent linkagesprovide opportunities for greater improvement in the fracturetoughness (KIC).活性的嵌段共聚物（BCPs）提供了一种独特的增韧热固性环氧材料的方法，因为其共价键对热固性材料的断裂韧性（KIC）有很大的提高。 In this study, a tailored reactive tetrablock copolymer,poly[styrene-alt-(maleic anhydride)]-block-polystyrene-block-poly(n-butyl acrylate)-block-polystyrene, was incorporated into a diglycidyl ether of bisphenol A based epoxy resin.在本文中，一种定制的四嵌段共聚物，聚[苯乙烯-alt-（顺丁烯二酸酐）]-混-聚苯乙烯-混-聚丙烯酸正丁酯-混-聚苯乙烯，被插入二缩水甘油醚双酚A环氧树脂。The results demonstrate the advantage of reactive BCP in finely tuning and controllingthe structure of epoxy blends, even with 95 wt % epoxy-immiscible triblocks. 结果表明活性BCP能很好地调节和控制环氧混合物的结构，甚至可以加入95wt%的与环氧不相溶的四嵌段化合物。The size of the dispersed phase was efficiently reducedto submicrometer level. 分散相的尺寸可以有效地减至亚微米水平。The mechanical properties, such as KIC, of these cured blends were investigated.本文还研究了其固化体系的机械性能，如断裂韧性KIC。 The addition of 10 wt %reactive BCP into the epoxy resins led to considerable improvements in the toughness, imparting nearly a 70% increase in KIC.给环氧树脂中加入10wt%的活性BCP就可以大幅度地提高其韧性，其相应的KIC也可以提高70%左右。 Thedesigned reactive tetrablock copolymer opened good prospects because of its potential novel applications in toughening modificationof engineering polymer composites. VC 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42826.这种设计的活性四嵌段共聚物打开了一个美好的前景，因为其在工程聚合物材料的韧性改性中有相当大的潜力。INTRODUCTION简介Epoxy resins have been widely applied as matrices of adhesivesand structural materials because of their highly crosslinkednature.环氧树脂以其高的交联性质被广泛地应用于胶黏剂和结构材料。 This feature also brings certain drawbacks, includingbrittleness and notch sensitivity.这种特性依然有它的缺点，包括脆性和易断性[1]。To expand their applications,the toughening modification of epoxy resins has attractedresearcher’s attention for many