江苏大学学报（自然科学版）2017，Vol.38Issue(4)：461-465,471,6.DOI:10.3969/j.issn.1671-7775.2017.04.015
自修复微胶囊型环氧树脂复合材料的制备及其性能
Preparation and performance of self-healing epoxy resin matrix composites using microcapsules
摘要
Abstract
The self-healing epoxy resin microcapsules were synthesized by in-situ polymerization with urea-formaldehyde resin as shell material and E-51 epoxy resin as core material.The morphology of microcapsules was observed by scanning electron microscope (SEM),and the size and distribution were measured by metallurgical microscopy.The chemical structure of microcapsules was characterized by Fourier transform infrared spectroscope (FIIR),and the thermal degradation characteristics were determined by thermogravimeter (TGA).Microencapsulated E-51 epoxy resin healing agent and phthalic anhydride latent curing agent were embedded into E-44 epoxy matrix to prepare self-healing epoxy composites.The impact strength and the self-healing efficiency of composites were measured by Charpy impact tester.The results show that the microcapsules are uniform sphere with high core content and good thermal stability.The fracture of pure epoxy shows brittle performance with mirror fracture surface,while the fracture of composites with microcapsules exhibits hackle marking.In the case of 8.0％ microcapsules and 3.0％ latent hardener,the optimum self-healing efficiency reaches 81.5％.关键词
环氧树脂/微胶囊/复合材料/自修复/自修复效率Key words
epoxy resin/microcapsule/composite material/self-healing/self-healing efficiency分类
化学化工引用本文复制引用
袁新华,陈燕秋,张倩,刘永强..自修复微胶囊型环氧树脂复合材料的制备及其性能[J].江苏大学学报（自然科学版）,2017,38(4):461-465,471,6.基金项目
国家自然科学基金资助项目(20704019,35851402128) （20704019,35851402128）
教育部留学回国人员科研启动基金资助项目(2011508) （2011508）
