DOI: 10.3724/SP.J.1249.2017.05441

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:5 PP.441-450

Research progress of extrinsic microcapsule self-healing materials

This review briefly introduces several extrinsic microcapsule self-healing composite materials, including dicyclopentadiene-Grubbs, polydimethylsiloxane, active solvent, epoxy resin, and isocyanate chemicals. The comparisons of the self-healing designs, main performances and ranges of use on these the microcapsule materials in these systems are evaluated based on the original data. To realize the material self-healing, the extrinsic microcapsules in the self-healing composite materials are designed to be able to rupture and discharge core chemicals which can effectively adhere cracks, therefore to prolong the service life of the composites. The fracture mechanism of the materials is related to the micro-cracks generated during mechanical applications. The fracture behaviors have the influences on the intelligent healing process of the designed self-healing system. Such chemical systems of these intelligent healing materials have been developed as the new scientific method and high-tech engineering applications in the near future. This review makes some comments on the advancements of self-healing composite materials with extrinsic microcapsules, and the difficulties in the microcapsule self-healing composite materials.

Key words:self-healing materials,microcapsules,extrinsic,microcracks,dicyclopentadiene catalyst,polydimethylsiloxane,active solvent,epoxy resin,isocyanate

ReleaseDate:2017-10-20 02:07:28

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