Effect of urea-formaldehyde resin-coated epoxy resin microcapsules on self-healing properties of resin
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.
urea-formaldehyde resinepoxy resinmicrocapsulecomposite materialself-healing propertypreparation process
万方数据
维普
