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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Application of layer-by-layer assembled graphene oxide nanosheets/polyaniline/zinc cations for construction of an effective epoxy coating anti-corrosion system
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Application of layer-by-layer assembled graphene oxide nanosheets/polyaniline/zinc cations for construction of an effective epoxy coating anti-corrosion system

机译：逐层组装石墨烯氧化物纳米片/聚苯胺/锌阳离子的应用进行了有效环氧涂层抗腐蚀系统的构建

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摘要

By a layer by layer deposition approach the grafted graphene oxide (GO) particles were grafted by zinc doped polyaniline (PAni) and then distributed in the epoxy matrix to provide active inhibition/barrier properties simultaneously. The modified/unmodified nanosheets were examined by X-ray diffraction (XRD) analysis and Raman spectroscopy. The corrosion prevention effect of GO-PAni-Zn/epoxy composite was studied by EIS and salt spray test. Results revealed that the GO nanosheets dispersion quality and interfacial interactions were improved after applying PAni-Zn layer, leading to significant improvement in the epoxy coating barrier properties against diffusion of sodium chloride solution. In addition, according to EIS test results the active inhibition properties of the epoxy film was promoted after addition of zinc doped polyaniline compound. GIXRD results confirmed deposition of an inhibitor film on metal surface within the scratched part of epoxy composite coating filled with GO-PAni-Zn particles. In addition, the coating surface damage during salt spray test was significantly decreased through addition of GO-PAni-Zn as demonstrated by SEM/contact angle tests. (C) 2019 Elsevier B.V. All rights reserved.
机译：通过层沉积方法，接枝掺杂的聚苯胺（PANI）接枝接枝的石墨烯氧化物（GO）颗粒，然后在环氧基质中分布以同时提供活性抑制/阻隔性能。通过X射线衍射（XRD）分析和拉曼光谱检查改性/未修饰的纳米片。通过EIS和盐雾试验研究了Go-Pani-Zn /环氧复合材料的腐蚀预防效果。结果显示，在施用Pani-Zn层后，改善了Go纳米片分散质量和界面相互作用，从而改善了氯化钠溶液扩散的环氧涂层阻隔性能显着改善。此外，根据EIS测试结果，在加入掺杂锌掺杂的聚苯胺化合物之后促进了环氧膜的主动抑制性质。 GixRD结果证实抑制膜在填充有Go-Pani-Zn颗粒的环氧复合涂层的划痕部分内的金属表面上的沉积。此外，通过添加Go-Pani-Zn，盐雾试验期间的涂层表面损坏显着降低，如SEM /接触角测试所示。 （c）2019 Elsevier B.v.保留所有权利。

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