Preparation of melamine resin isocyanate self-healing microcapsules and their application in self-healing coatings

IF 3.4 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Coatings Technology and Research Pub Date : 2026-02-02 DOI:10.1007/s11998-025-01215-3

Fuzhuang Jia, Chenwei Lin, Yingmin Yuan, Yanhong Du, Baolian Zhang

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Abstract

Traditional anticorrosion coatings often fail due to localized damage that degrades their protective performance. To address this challenge, a self-healing microcapsule system was developed using isophorone diisocyanate (IPDI) as the core material and melamine formaldehyde (MF) resin as the shell material. By optimizing process parameters—specifically using 6 g of methoxylated melamine formaldehyde resin prepolymer (MMF) and 9 g of IPDI, with a TEPA/D230 mass ratio of 1:1.5 and an SMA/TO-8 mass ratio of 3:1—the core material encapsulation efficiency was increased to 64.85%. Application tests showed that incorporating microcapsules at 1–10% by mass in the coating significantly inhibited rust formation in damaged areas, demonstrating excellent self-healing capabilities. These results indicate that this microcapsule system effectively enhances localized damage repair in coatings, offering a novel approach for developing self-healing anticorrosion technologies. This work establishes a scalable strategy for next-generation protective coatings, bridging the gap between high core retention and industrial process compatibility.

Graphical abstract

The alternative text for this image may have been generated using AI.

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三聚氰胺树脂异氰酸酯自愈微胶囊的制备及其在自愈涂料中的应用

传统的防腐涂料往往由于局部损伤而失效，从而降低了其防护性能。为了解决这一问题，以异佛尔酮二异氰酸酯（IPDI）为核心材料，三聚氰胺甲醛（MF）树脂为外壳材料，开发了一种自修复微胶囊系统。通过优化工艺参数，以6 g甲氧基化三聚氰胺甲醛树脂预聚物（MMF）和9 g IPDI为原料，在TEPA/D230质量比为1:1.5、SMA/ to -8质量比为3:1的条件下，将芯材的包封效率提高到64.85%。应用试验表明，在涂层中加入质量为1-10%的微胶囊可显著抑制受损区域的锈蚀形成，表现出良好的自修复能力。这些结果表明，该微胶囊系统有效地增强了涂层的局部损伤修复，为开发自修复防腐技术提供了新的途径。这项工作为下一代保护涂层建立了可扩展的策略，弥合了高芯保留率和工业工艺兼容性之间的差距。图形抽象此图像的替代文本可能是使用AI生成的。

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来源期刊

Journal of Coatings Technology and Research 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.