Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 165, Issue -, Pages 9-17Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2018.06.008
Keywords
Graphene oxide; Nanodiamond; Epoxy; Mechanical property; Anti-corrosion
Categories
Funding
- Singapore Maritime Institute [SMI-2016-OF-03]
- project Polymer/Graphene/Fibre nanocomposite Coating for Next Generation Offshore Structure Protection
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Positively charged nanodiamond (ND) is used to decorate negatively charged graphene oxide (GO) to form a GO ND hybrid nanomaterial by electrostatic force. Structural studies results showed that after the decoration, the aggregation of GO sheets is extensively hindered in both at the powder and dispersion states, with a clear reduction in the layer numbers in the latter. The mechanical properties of epoxy/GO, epoxy/ND and epoxy/GO-ND were investigated and compared. The results showed that the GO increased the ductility of epoxy, while the ND increased the rigidity. The best mechanical performance was found for the epoxy/GO-ND nanocomposites, at a GO:ND ratio of 1:5. The reinforcement mechanism of the nanophases was further illustrated by the fracture surface of SEM/optical images and TGA analysis. In addition, the anti-corrosion property of the thus developed epoxy nanocomposite coatings was revealed by electrochemical impedance spectroscopy (EIS), and the results demonstrated that the epoxy/GO-ND coatings exhibited better anti-corrosion property.
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