Waterborne protective coatings have attracted tremendous attention recently, but their practical applications are severely limited by week shielding performance and poor mechanical durability. Herein, a concrete-like three-dimensional network filler was designed by stacking fly ash, graphene oxide, and multi-walled carbon nanotubes onto each other with the help of a silane coupling agent to enhance the anti-corrosion performance and wear resistance of waterborne epoxy coating. Through chemical modification, the surface of the filler has a large number of both epoxy and amino groups, and the filler-filler, resin-filler, and resin-resin multi-dimensional cross-linking reactions occur inside the coating to improve the cross-linking performance of the water-based resin. With the help of the stable structure of the “imitation” concrete structure and greater interface strength of the silane-modified composite material, the water-based coating exhibits excellent anti-corrosion and wear resistance. The mass loss of the imitation concrete coating is only 0.0098 g per-cycle of Taber friction testing, and in the electrochemical impedance spectroscopy test, its |Z|_{0.01 Hz} value became stabilized at approximately 1 × 10⁷ Ω·cm² after 14 d of being immersed in 3.5% NaCl solution, and its value was two orders of magnitude higher than that of pure epoxy. The results show the matching of the three different types of fillers in the imitation concrete, and interface chemical control of the filler surface can improve the compatibility between the functional filler and water-based epoxy resin. The use of industrial waste fly ash as one of the main fillers is conducive to promoting the recycling of resources, so that the coating has a certain cost performance and engineering application value. This study is expected to open new insights into specialized design of the internal filler of such coatings and the modification of the internal surface of a water-based coating improves the coating’s anti-corrosion and wear resistance.

水性防护涂料近来引起了极大的关注，但是其实际应用受到周屏蔽性能和较差的机械耐久性的严重限制。在本文中，通过在硅烷偶联剂的帮助下将粉煤灰，氧化石墨烯和多壁碳纳米管彼此堆叠，从而设计了混凝土状的三维网络填料，以增强水性涂料的耐腐蚀性能和耐磨性环氧涂料。通过化学改性，填料的表面同时具有大量的环氧基和氨基基团，并且填料-填料，树脂-填料和树脂-树脂多维交联反应在涂层内部发生，从而改善了交联性。水性树脂的连接性能。借助“仿制”混凝土结构的稳定结构和硅烷改性复合材料的更高界面强度，该水基涂料具有出色的抗腐蚀和耐磨性。泰伯摩擦试验的每周期模拟混凝土涂料的质量损失仅为0.0098 g，在电化学阻抗谱试验中，其| Z |_0.01赫兹值变得约为1×10稳定⁷ Ω·厘米²将其浸入3.5％NaCl溶液中14天后，其值比纯环氧树脂高两个数量级。结果表明，三种不同类型的填料在仿混凝土中的匹配，并且填料表面的界面化学控制可以改善功能性填料与水性环氧树脂之间的相容性。工业废粉煤灰作为主要填料之一的使用，有利于促进资源的循环利用，使涂料具有一定的性价比和工程应用价值。预期该研究将为这种涂料的内部填料的专门设计开辟新的见识，并且对水基涂料的内表面进行改性可改善涂料的抗腐蚀和耐磨性。