An investigation on shape memory behaviours of hydro-epoxy/glass fibre composites |
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| Affiliation: | 1. Department of Applied Chemistry, Northwestern Polytechnical University, Xi’an 710129, China;2. The First Aircraft Institute of AVIC, Xi’an 710089, China;1. School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China;2. Department of Chemistry, Tianjin University, The National Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China;3. Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, PR China;1. National Key Laboratory of Science and Technology on Advance Composites in Special Environments, Science Park of Harbin Institute of Technology (HIT), Harbin 150080, China;2. Department of Astronautical Science and Mechanics, Harbin Institute of Technology, Harbin 150001, China;1. Center for Composite Materials and Structures, Harbin Institute of Technology (HIT), No. 2 Yikuang Street, P.O. Box 3011, Harbin 150080, People’s Republic of China;2. Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), No. 92 West Dazhi Street, P.O. Box 301, Harbin 150001, People’s Republic of China;3. School of Chemical Engineering and Technology, Harbin Institute of Technology (HIT), No. 92 West Dazhi Street, P.O. Box 410, Harbin 150001, People’s Republic of China;1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China;2. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006, Australia |
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| Abstract: | 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. |
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| Keywords: | A Polymer–matrix composites (PMCs) B Thermomechanical E Compression moulding |
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