脲醛树脂包覆的环氧树脂微胶囊对树脂自修复性能的影响  

Effect of urea-formaldehyde resin-coated epoxy resin microcapsules on self-healing properties of resin

作　　者：陈毅 刘景勃[1] 张发爱[1] Chen Yi;Liu Jingbo;Zhang Faai(College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004

出　　处：《合成树脂及塑料》2024年第2期16-20,29,共6页China Synthetic Resin and Plastics

基　　金：国家自然科学基金(51263004)。

摘　　要：将自制脲醛树脂包覆的环氧树脂微胶囊添加到环氧树脂基体中,制备了环氧树脂自修复复合材料。采用锥形双悬臂梁法分析了环氧树脂微胶囊的粒径、用量、制备方法对环氧树脂/环氧树脂微胶囊复合材料自修复效率的影响,观察了其自修复过程,揭示了自修复机理。结果表明:采用二步法制备的微胶囊,在微胶囊粒径为97~150μm,用量为15%(w)时,复合材料的自修复效率达到最大,为104.7%。The self-healing epoxy resin composites were prepared by adding homemade urea-formaldehyde resin-coated epoxy ethyl acetate microcapsules to the epoxy resin matrix.The effects of particle size,dosage and preparation method of the epoxy resin microcapsules on the self-healing efficiency of the epoxy resin/epoxy microcapsules were tested by the conical double cantilever beam method to observe the self-healing process and reveal the self-healing mechanism.The results show that the self-healing efficiency of the composites reaches the maximum of 104.7%when the microcapsule particle size is 97-150μm and the mass fraction of the microcapsules is 15%prepared by the two-step method.

关 键 词：脲醛树脂 环氧树脂 微胶囊 复合材料 自修复性能 制备工艺 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]