Abstract Salicylaldehyde@ZIF-8/graphene oxide (SZG) nanosheets were fabricated by anchoring salicylaldehyde@ZIF-8 nanoparticles on graphene oxide. SZG nanosheets were modified by amino silane 3-aminopropyltriethoxysilane (f-SZG) to improve the compatibility with epoxy coating. Sedimentation test showed the excellent dispersion stability of f-SZG in resin epoxy even after standing for 480 h. The cross-sectional microstructure of coatings implied the strong f-SZG/coating matrix interface by transforming the cleavage fracture to the ductile. Additionally, the stimuli-responsive release to H+ and Al3+ ions of f-SZG is maintained after the silanization. Compared with other samples, f-SZG0.5 epoxy coatings show the optimal long-term corrosion protection property with the lowest reduction rate of |Z|0.01Hz (13.6%) after 480 h immersion and the intact surface after 27d salt spray test due to the stronger interfaces of f-SZG/epoxy matrix and coating/substrate, the proper content (0.5 wt.%) and the enhanced cross-linked density of coating.

中文翻译：

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改性水杨​​醛@ZIF-8/氧化石墨烯增强AA2024-T3环氧涂层防腐性能

摘要 通过将水杨醛@ZIF-8 纳米颗粒锚定在氧化石墨烯上制备了水杨醛@ZIF-8/氧化石墨烯（SZG）纳米片。SZG 纳米片被氨基硅烷 3-氨基丙基三乙氧基硅烷 (f-SZG) 改性，以提高与环氧树脂涂层的相容性。沉降试验表明，即使静置 480 小时后，f-SZG 在树脂环氧树脂中仍具有优异的分散稳定性。通过将解理断裂转化为韧性，涂层的横截面微观结构暗示了强大的 f-SZG/涂层基体界面。此外，f-SZG 对 H+ 和 Al3+ 离子的刺激响应释放在硅烷化后得以保持。与其他样品相比，f-SZG0.5 环氧涂层表现出最佳的长期腐蚀防护性能，降低率最低为|Z|0.01Hz (13.