期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 118, 期 -, 页码 244-250出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2015.08.015
关键词
Smart materials; Polymer matrix composites; Delamination; Self-healing composites; Self-healing polyurethanes matrix
资金
- Army Research Office [W911NF-12-1-0014]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1620328] Funding Source: National Science Foundation
Continuous carbon fiber composites with self-healing properties are developed using novel thermally responsive healable polyurethanes that incorporate Diels-Alder cycloaddition adducts. Short beam shear testing, which generates delamination inside the composite panels, is conducted to evaluate the healing efficiency. This testing shows that both the composites are stable and that they can be repeatedly healed, achieving average healing efficiencies of similar to 85% for the first healing cycle and similar to 73% for the second cycle. The results demonstrate that the intrinsic properties of the composites can be maintained after healing has occurred and since the healing ability of the material is only a function of the DA moieties in the polymer matrix, the carbon fiber does not require any treatments. (C) 2015 Elsevier Ltd. All rights reserved.
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