Journal
COMPOSITES PART B-ENGINEERING
Volume 51, Issue -, Pages 169-174Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.03.036
Keywords
Polymer-matrix composites (PMCs); Thermomechanical; Compression moulding
Funding
- Doctorate Foundation of the Northwestern Polytechnical University
- Northwestern Polytechnical University Foundation for Fundamental Research [NPU-FFR-201047]
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Shape-memory polymers (SMPs) have the capacity to return large strains by external stimuli. Among various SMPs, shape-memory epoxy has received considerable attention because of its superior mechanical and thermal properties as well as excellent shape-memory performance. In this study, short glass fibre-reinforced shape-memory hydro-epoxy composites are developed to improve further the mechanical property of shape-memory epoxy resin. The thermomechanical and shape-memory properties of the developed composite materials are investigated by dynamic mechanical analysis, bend test and shape recovery test. The results indicate that the glass modulus and bend strength of the developed composite materials initially increase and then slightly decrease with increasing short glass fibre content. The glass transition temperature of the developed composite materials does not change with increasing short glass fibre. When the short glass fibre content is less than 4.5 wt.%, full recovery can be observed after only several minutes at different temperatures. The shape-memory property of the composite materials is not affected greatly. However, when the short glass fibre content is more than 4.5 wt.%, the material would be destroyed after deformation. (C) 2013 Elsevier Ltd. All rights reserved.
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