Bing Jiahui,Zhang Shudi*,Dong Jialin,et al.Preparation and performance study of urea-formaldehyde epoxy resin self-repairing coating[J].Plating & Finishing,2025,(04):90-95.[doi:10.26914/c. cnkihy.2023.045661]
doi: 10.3969/j.issn.1001-3849.2025.04.014脲醛-环氧树脂自修复涂层的制备及性能研究
- Title:
- Preparation and performance study of urea-formaldehyde epoxy resin self-repairing coating
- 分类号:
- TQ323.5
- 文献标志码:
- A
- 摘要:
- 为解决传统涂层在环境中长期使用失效导致金属腐蚀的问题，研究了带有自修复性能的智能涂层。将尿素与甲醛作为壁材，环氧树脂E51作为芯材合成脲醛-环氧树脂微胶囊，使用十六烷基三甲氧基硅烷(HDTMS)对其表面进行改性，得到疏水自修复微胶囊；将其加入到涂层中即可制备出具有疏水自修复功能的智能涂层。结果表明，使用扫描电子显微镜(SEM)观察其微观形貌，发现微胶囊表面呈现不光滑的球体;通过接触角实验测试智能涂层与普通有机涂层接触角角度，发现智能涂层接触角远大于普通有机涂层接触角，证明其有疏水性;通过电化学测试、盐雾试验测试其耐腐蚀性能与自修复性能，实验表明智能涂层具有良好的耐腐蚀性，且可完成自修复功能。
- Abstract:
- To solve the problem of metal corrosion caused by long-term failure of traditional coatings in the environment, an intelligent coating with self-healing performance was studied. Using urea and formaldehyde as wall materials and epoxy resin E51 as core material, urea formaldehyde epoxy resin microcapsules were synthesized. The surface was modified with hexadecyltrimethoxysilane (HDTMS) to obtain hydrophobic self-healing microcapsules, which were then added to the coating to prepare an intelligent coating with hydrophobic self-healing function. The results showed that the microstructure of the microcapsules was observed using scanning electron microscope, and it was found that the surface of the microcapsules presented an uneven spherical shape. Through contact angle experiments, the contact angle between the smart coating and the ordinary organic coating was tested, and it was found that the contact angle of the smart coating was much larger than that of the ordinary organic coating, proving its hydrophobicity. The corrosion resistance and self-healing performance of the intelligent coating were tested through electrochemical testing and salt spray testing. The experiment showed that the intelligent coating has good corrosion resistance and can complete the self-healing function
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