Self-Healing of Cracks in Epoxy Composites

Tao Yin; Min Zhi Rong; Ming Qiu Zhang

doi:10.4028/www.scientific.net/AMR.47-50.282

Paper Titles

Micro-Forming of Au₄₉Ag_5.5Pd_2.3Cu_26.9Si_16.3 Metallic Glasses in Supercooled Region
p.266

Fabrication and Characterization of Microscale Sensors for Strain Measurement in Flexible Polymer Heart Valve Leaflet
p.270

Microstructure and Mechanical Properties of 0.63C-12.7Cr Martensitic Stainless Steel during Various Tempering Treatments
p.274

Fracture Behavior of Polypropylene /Elastomer Blends
p.278

Self-Healing of Cracks in Epoxy Composites
p.282

Melamine Resin-Walled Microcapsules Containing Styrene: Preparation and Characterization
p.286

Synthesis and Characterization of a Novel Epoxy with Improved Processability
p.290

Preparation and Characterization of a Novel Flame Retardant
p.294

Analysis of the Novel Strain Responsive Actuators of Silicone Dielectric Elastomer
p.298

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 47-50Self-Healing of Cracks in Epoxy Composites

Self-Healing of Cracks in Epoxy Composites

Abstract:

To provide epoxy based composites with self-healing ability, two-component healing system consisting of urea-formaldehyde walled microcapsules containing epoxy (30~70µm in diameter) and CuBr2(2-MeIm)4 (the complex of CuBr2 and 2-methylimidazole) latent hardener was synthesized. When cracks were initiated or propagated in the composites, the neighbor micro-encapsulated epoxy would be damaged and released. As the latent hardener is soluble in epoxy, it can be well dispersed in epoxy composites during composites manufacturing, and hence activate the released epoxy wherever it is. As a result, repair of the cracked sites is completed through curing of the released epoxy. The present work indicated that the plain weave glass fabric laminates using the above self-healing epoxy as the matrix have been provided with self-healing capability.