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 97-150 μm 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
Key words
urea-formaldehyde resin/epoxy resin/microcapsule/composite material/self-healing property/preparation process
维普
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