Self-Healing Epoxy Composites – Part II: Healing Performance

Tao Yin; Min Zhi Rong; Ming Qiu Zhang

doi:10.4028/www.scientific.net/AMR.716.387

Paper Titles

Preparation of ZnO/PANI Nanocomposite and Study on its Photocatalytic Properties
p.368

Effect of Expanded Temperature on Microstructure of Carbon Nanotubes/Expanded Graphite Composites
p.373

Modification of Epoxy Asphalt by Hyperbranched Polyester
p.379

Self-Healing Epoxy Composites – Part I: Curing Kinetics and Heat-Resistant Performance
p.383

Self-Healing Epoxy Composites – Part II: Healing Performance
p.387

The Annealing Behavior of cryoECAP Processed Pure Aluminum under High Magnetic Field
p.391

Research on Synthetic Quartz Crystal Quality
p.397

Fracture of a Finite Medium with a Circular Internal Crack under Hyperbolic Heat Conduction-Prescribed Crack Face Temperature
p.402

Structural Effect on the Tree-Shaped Flow in the Nanoscale Network of Wool Fiber
p.409

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 716Self-Healing Epoxy Composites – Part II: Healing...

Self-Healing Epoxy Composites – Part II: Healing Performance

Abstract:

Epoxy composites were provided with healing capability by pre-dispersing a novel repair system in the composites matrix cured by 2-ethyl-4-methylimidazole (2E4MIm). The healing agent consisted of ureaformaldehyde microcapsules containing epoxy and latent hardener CuBr₂(2-MeIm)₄ (the complex of CuBr2 and 2-methylimidazole). Single-edge notched bending (SENB) test were conducted to evaluate fracture toughness of the composites before and after healing. Moreover, healing efficiency was studied as a function of the content of the two-component healing agents. It was found that a healing efficiency of 173% relative to the fracture toughness of virgin composites was obtained in the case of 15 wt% epoxy-loaded microcapsules and 3 wt% CuBr₂(2-MeIm)₄.