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Self-Healing Epoxy Composites – Part II: Healing Performance
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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.
Title: Self-Healing Epoxy Composites – Part II: Healing Performance
Description:
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.
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