Repeated self-healing of microvascular carbon fibre reinforced polymer composites
| Autor: | Richard S. Trask, Ian P Bond, T.S. Coope, Duncan F. Wass |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Materials science Composite number Fracture mechanics Polymer Epoxy Condensed Matter Physics Atomic and Molecular Physics and Optics Autoclave chemistry Polymerization Mechanics of Materials Self-healing visual_art Signal Processing visual_art.visual_art_medium General Materials Science Electrical and Electronic Engineering Composite material Trifluoromethanesulfonate Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures. 23:115002 |
| ISSN: | 1361-665X 0964-1726 |
| Popis: | A self-healing, high performance, carbon fibre reinforced polymer (CFRP) composite is demonstrated by embedding a Lewis-acid catalytic curing agent within a laminate, manufactured using out of autoclave (OOA) composite manufacturing methods. Two configurations of healing agent delivery, pre-mixed and autonomous mixing, are investigated via injection of a healing agent through bio-inspired microvascular channels exposed on Mode I fractured crack planes. Healing is effected when an epoxy resin-solvent healing agent mixture reaches the boundary of embedded solid-state scandium(III) triflate (Sc(OTf)3) catalyst, located on the crack plane, to initiate the ring-opening polymerisation (ROP) of epoxides. Tailored self-healing agents confer high healing efficiency values after multiple healing cycles (69–108%) to successfully mitigate against crack propagation within the composite microstructure. |
| Databáze: | OpenAIRE |
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