Journal
COMPOSITES PART B-ENGINEERING
Volume 91, Issue -, Pages 75-82Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2016.01.019
Keywords
Polymer-matrix composites (PMCs); Smart materials; Interface/interphase; Mechanical testing
Funding
- National Natural Science Foundation of China [11225211]
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Low mechanical strength and low thermal stability of pristine epoxy-based shape memory polymer (ESMP) hinder its practical applications, and the usually used reinforcing fillers are expensive. In this study, thermally reduced graphite oxide (TrGO) was used as a low-cost but efficient reinforcement phase for ESMP. Compared with pristine ESMP, an increase of 41%-71% for Young's modulus and 44%-64% for tensile strength were observed for the TrGO/ESMP composites containing only 1-3 wt.% TrGO. Thermogravimetric analysis (TGA) showed that 2 wt.% TrGO can improve the thermal stability of ESMP significantly. The thermal conductivity of TrGO/ESMP composites increased almost linearly with increasing TrGO content. Moreover, The TrGO/ESMP composite containing 2 wt.% TrGO can decrease the shape recovery time of ESMP down to 1 min as a result of enhanced thermal conductivity. The TrGO/ESMP composites with such improved properties may have great potential in smart systems. (C) 2016 Elsevier Ltd. All rights reserved.
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