Chen Hong,Li Xintong.Preparation and corrosion resistance of copper-based metal-organic framework reinforced epoxy resin coating Sun Dongpeng, Kang Shumei*, Li Jinghao, Cao Qidong, Lu Chenshuo,[J].Plating & Finishing,2025,(06):78-85.
doi: 10.3969/j.issn.1001-3849.2025.06.011铜基金属有机框架增强环氧树脂涂层的制备及耐蚀性能
- Title:
- Preparation and corrosion resistance of copper-based metal-organic framework reinforced epoxy resin coating Sun Dongpeng, Kang Shumei*, Li Jinghao, Cao Qidong, Lu Chenshuo,
- Keywords:
- Cu-MOF; dimethylimidazole; epoxy resin; impedance modulus
- 分类号:
- TG146
- 文献标志码:
- A
- 摘要:
- 为了提高金属基体的耐蚀性，使用具有缓蚀性能的二甲基咪唑(2-MI)作为有机配体，通过化学沉积法合成了铜基金属有机框架(Cu-MOF)。通过FTIR、XRD和EDX分析表明金属离子已成功与有机配体反应并配位；通过SEM图像显示出Cu-MOF具有花状结构；BET测试表明合成的纳米颗粒具有高表面积和14.48 nm平均孔径的多孔结构；紫外结果表明Cu-MOF具有pH响应行为。此外，将制备的Cu-MOF添加到环氧树脂中，在3.5% NaCl溶液浸泡下，由于Cu-MOF的水解释放出二甲基咪唑使其吸附在金属基体表面，延缓了金属腐蚀的速度。结果表明：当Cu-MOF的添加量为1.5%时，阻抗模值达到最大值9×105 Ω·cm –2，优于纯环氧涂层(104 Ω·cm –2)。
- Abstract:
- In order to improve the corrosion resistance of metal matrix, copper-based metal-organic framework(Cu-MOF)was synthesized by deposition method using dimethylimidazole (2-MI) with corrosion inhibition performance as organic ligand. FTIR, XRD and EDX analysis showed that metal ions had successfully reacted with organic ligands and coordinated; SEM images showed that Cu-MOF had a flower-like structure; BET showed that the synthesized nanoparticles had a porous structure with high surface area and an average pore size of 14.48 nm; UV results showed that Cu-MOF had pH response behavior. In addition, the prepared Cu-MOF was added to the epoxy resin. When soaked in 3.5% NaCl solution, the hydrolysis of Cu-MOF released 2-MI, which was adsorbed on the surface of the metal matrix, delaying the rate of metal corrosion. The results showed that when the addition amount of Cu-MOF was 1.5%, the impedance modulus reached the maximum value of 9×105 Ω·cm –2, which was better than that of pure epoxy coating (104 Ω·cm–2)
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