In this paper, a new anti-corrosion composite coating with high-volume fraction of cardanol-based components was prepared using epoxy, cardanol-based reactive diluent (602A), and 602A functionalized graphene oxide nanosheets (A-GO). A one-step, low-cost method was adopted to synthesize the A-GO. By synergistically enhancing the matrix compactness, filler dispersibility, and matrix hydrophobicity, the cardanol-rich epoxy composite coating (A-GO/602A/epoxy) shows high anti-corrosion performance in the long term. The morphology and structure analyses show that the A-GO/602A/epoxy composite coating has i. enhanced matrix compactness, ii. optimized filler dispersibility and filler/matrix bonding strength, and iii. improved matrix hydrophobicity. The electrochemical impedance spectroscopy (EIS) test was used to determine the anti-corrosion performance of the A-GO/602A/epoxy composite coating. After immersing in diluent NaCl solution (3.5 wt%) for 90 days, the increase of the impedance modulus of the A-GO/602A/epoxy composite coating maintains three orders of magnitude at low frequencies (0.01 Hz) compared to the pure petroleum-based epoxy coating, indicating that the corrosion properties of the composite coating can be significantly enhanced by synergistically optimization of the three factors. Our results show the high potential of cardanol-rich epoxy coatings in the field of anti-corrosion epoxy coatings, and may give a guide to the design of high-performance anti-corrosion epoxy coatings.

在本文中，使用环氧树脂、腰果酚基反应性稀释剂 (602A) 和 602A 功能化氧化石墨烯纳米片 (A-GO) 制备了一种具有高体积分数的腰果酚基组分的新型防腐复合涂层。采用一步、低成本的方法合成 A-GO。通过协同增强基体致密性、填料分散性和基体疏水性，富含腰果酚的环氧复合涂层（A-GO/602A/epoxy）具有长期的高防腐性能。形貌和结构分析表明，A-GO/602A/epoxy复合涂层具有i。增强的矩阵紧凑性，ii。优化的填料分散性和填料/基体结合强度，以及 iii．改善基质疏水性。电化学阻抗谱（EIS）测试用于确定A-GO/602A/环氧树脂复合涂层的防腐性能。在稀释的 NaCl 溶液（3.5 wt%）中浸泡 90 天后，A-GO/602A/epoxy 复合涂层的阻抗模量在低频（0.01 Hz）下与纯石油涂层相比保持三个数量级。基环氧涂层，表明通过三个因素的协同优化可以显着提高复合涂层的腐蚀性能。我们的研究结果显示了富含腰果酚的环氧涂料在防腐环氧涂料领域的巨大潜力，并可能为高性能防腐环氧涂料的设计提供指导。5 wt%) 90 天后，A-GO/602A/环氧树脂复合涂层的阻抗模量在低频（0.01 Hz）下与纯石油基环氧树脂涂层相比保持三个数量级的增加，表明通过三个因素的协同优化，可以显着提高复合涂层的耐腐蚀性能。我们的研究结果显示了富含腰果酚的环氧涂料在防腐环氧涂料领域的巨大潜力，并可能为高性能防腐环氧涂料的设计提供指导。5 wt%) 90 天后，A-GO/602A/环氧树脂复合涂层的阻抗模量在低频（0.01 Hz）下与纯石油基环氧树脂涂层相比保持三个数量级的增加，表明通过三个因素的协同优化，可以显着提高复合涂层的耐腐蚀性能。我们的研究结果显示了富含腰果酚的环氧涂料在防腐环氧涂料领域的巨大潜力，并可能为高性能防腐环氧涂料的设计提供指导。表明通过三个因素的协同优化可以显着提高复合涂层的腐蚀性能。我们的研究结果显示了富含腰果酚的环氧涂料在防腐环氧涂料领域的巨大潜力，并可能为高性能防腐环氧涂料的设计提供指导。表明通过三个因素的协同优化可以显着提高复合涂层的腐蚀性能。我们的研究结果显示了富含腰果酚的环氧涂料在防腐环氧涂料领域的巨大潜力，并可能为高性能防腐环氧涂料的设计提供指导。