Effect of Graphene Oxide Decorated With Synthesized Nano-CeO2 on Barrier Properties of Epoxy Anticorrosion Coatings

Iranian Journal of Oil and Gas Science and Technology Pub Date : 2020-04-01 DOI:10.22050/IJOGST.2019.188155.1509

Zeinab Nassaj, F. Ravari, I. Danaee

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Abstract

In this paper, graphene oxide decorated with cerium oxide (CeO2) nanoparticles was prepared and used as anticorrosive pigments in epoxy nanocomposite coatings. The synthesized nanoparticle was characterized by FTIR, XRD, SEM, and EDX analyses. Graphene oxide decorated with CeO2 nanoparticles was dispersed in epoxy resin by sonication. The optimum nanoparticle content of the epoxy resin was studied by differential scanning calorimetry. The anticorrosive properties of these coatings were investigated using electrochemical impedance spectroscopy method and polarization in corrosive solution. Impedance parameters showed a decrease in the coating resistance over immersion time. The results indicated that the epoxy coatings containing nanoparticles could significantly increase the corrosion resistance of composite coatings compared to those of pure epoxy, and the highest value was obtained for 1% nanocomposite coatings after 270 days of immersion. Pull-off adhesion test showed that the highest value of adhesion was related to the coating containing 1% nanoparticles.

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合成纳米ceo2修饰氧化石墨烯对环氧防腐涂料阻隔性能的影响

本文制备了以氧化铈(CeO2)纳米粒子修饰的氧化石墨烯，并将其作为环氧纳米复合涂料的防腐颜料。通过FTIR、XRD、SEM和EDX等手段对合成的纳米颗粒进行了表征。采用超声法将纳米CeO2修饰的氧化石墨烯分散在环氧树脂中。采用差示扫描量热法研究了环氧树脂的最佳纳米颗粒含量。采用电化学阻抗谱法和腐蚀溶液极化法研究了涂层的防腐性能。阻抗参数显示涂层电阻随浸泡时间的增加而降低。结果表明，与纯环氧树脂相比，含纳米颗粒的环氧树脂涂层可显著提高复合涂层的耐蚀性，其中1%的纳米复合涂层在浸泡270天后达到最高。拉脱附着力测试表明，当涂层中纳米颗粒含量为1%时，其附着力最高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Iranian Journal of Oil and Gas Science and Technology

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