Healing of carbon fibre–epoxy composites using thermoplastic additives
作者： K. Pingkarawat , T. Bhat , D. A. Craze , C. H. Wang , R. J. Varley
DOI: 10.1039/C3PY00459G
关键词: Methacrylate 、 Delamination 、 Epoxy 、 Thermoplastic 、 Fracture toughness 、 Ethylene-vinyl acetate 、 Acrylonitrile butadiene styrene 、 Composite number 、 Composite material 、 Materials science
摘要: The healing efficiency and mechanisms of selected insoluble thermoplastics blended into an epoxy resin its respective carbon fibre–epoxy matrix composite is investigated. capacity two reactive thermoplastic additives (polyethylene-co-methacrylic acid (EMAA) polyethylene-co-glycidyl methacrylate (PEGMA)) non-reactive (ethylene vinyl acetate (EVA) acrylonitrile butadiene styrene (ABS)) to heal cracks in the network delaminations carbon–epoxy determined. were able partially repair fractured epoxy, although different operative. (except ABS) or completely effective restoring mode I interlaminar fracture toughness fatigue resistance delaminated composites. thermoplastics, defined by percentage recovery composites, increased order: ABS (lowest), PEGMA, EVA EMAA (highest). Healing PEGMA involves a unique pressure delivery mechanism whereas controlled viscosity adhesion surfaces. was ineffective as agent due high which impeded flow delamination crack.
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