核壳颗粒增韧改性环氧树脂基体研究评述  

A Review of Toughening Epoxy Resin Matrix by Core-Shell Particles

作　　者：朱刚建 李文晓[1] ZHU Gangjian;LI Wenxiao(School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学航空航天与力学学院,上海200092

出　　处：《材料导报》2024年第10期269-277,共9页Materials Reports

基　　金：国家重点研发计划(2019YFB1505204)。

摘　　要：环氧树脂(EP)具有优异的性能,被广泛应用在涂料、胶黏剂、复合材料等领域,但是其交联密度大,抗裂纹萌生和扩展能力差,因此,EP的增韧改性一直是国内外学者的研究重点。核壳颗粒(CSP)作为第二相加入EP中能达到良好的增韧效果,同时不会引起热力学性能的大幅损失,相较于传统增韧剂有较大的发展前景。本文在阐述EP的不同增韧机理的基础上,介绍了CSP增韧剂的增韧机理、主要类型及制备方法,评述了CSP材料、颗粒粒径、核壳比等因素对EP力学性能影响的研究结果,并分析了使用CSP增韧方法对作为复合材料基体的EP流变行为和固化动力学等工艺性能的影响。Due to its excellent performance,epoxy resin(EP)is widely used in coatings,adhesives,and composite materials.However,its high crosslinking density and poor ability to resist crack initiation and propagation have made EP toughening modification a hotspot for the global research community.Core-shell particles(CSP)added as a second phase to EP can achieve significant toughening effects without significantly compromising the thermodynamic properties.Compared with traditional toughening agents,CSP has a promising development prospect.Based on an explanation of the different toughening mechanisms of EP,this article introduces the toughening mechanism,main types,and preparation methods of CSP toughening agents.The research results on the effects of CSP material,particle size,and core-shell ratio on the mechanical properties of EP are evaluated,and the impact of using CSP toughening methods on the rheological behavior and curing kinetics of EP as a composite material matrix is analyzed.

关 键 词：核壳颗粒 环氧树脂 增韧 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]