Abstract 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.

中文翻译：

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纳米金刚石装饰的氧化石墨烯和环氧树脂的增强

摘要 带正电的纳米金刚石（ND）用于装饰带负电的氧化石墨烯（GO），通过静电力形成GO-ND杂化纳米材料。结构研究结果表明，装饰后，GO 片的聚集在粉末和分散状态下均受到广泛阻碍，后者的层数明显减少。研究并比较了环氧树脂/GO、环氧树脂/ND和环氧树脂/GO-ND的机械性能。结果表明，GO增加了环氧树脂的延展性，而ND增加了刚度。发现环氧树脂/GO-ND 纳米复合材料的最佳机械性能，GO:ND 比为 1:5。SEM/光学图像和TGA分析的断口进一步说明了纳米相的增强机制。此外，