期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 90, 期 -, 页码 286-295出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.07.017
关键词
Functionalized graphene; Polyurethane/epoxy resin; Thermo-electric dual-responsive composite; Shape memory property
资金
- ShanXi Provincial Science and Technology Foundation of China [20110321037-02]
- ShanXi Provincial Natural Science Foundation of China [2015011016]
- ShanXi Provincial International Technological Cooperation of China [2012081020]
- Taiyuan Bureau Science and Technology Research Projects Foundation of China [110240]
Functionalized graphene (FG) was successfully synthesized by treating graphene oxide with (3-aminopropyl) triethoxysilane (KH-550) and then reduced by hydrazine hydrate. Subsequently, significant reinforcement of polyurethane/epoxy resin (PU/EP) composites in situ synthesized on the FG is prepared. Morphologic study shows that, due to the formation of chemical bonding, the FG was dispersed well in the PU/EP matrix and the mechanical performance is improved. Meanwhile, the thermal degradation temperature was enhanced almost 50 degrees C higher than that of PU/EP. The conductivity of PU/FG/EP nanocomposites was 82.713 x 10(-6) S/m at 2.0 wt% loadings. The resulting composites exhibited 96% shape fixity, 94% shape recovery, enhanced shape recovery force to realize thermo-electric dual responsive property. Comparing with the results in literature, the composites used in this study have shown a progress between electrical conductivity and shape memory property. (C) 2016 Elsevier Ltd. All rights reserved.
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