Abstract: ［Objective］ To address particle aggregation，poor interfacial compatibility，and deteriorated barrier performance induced by direct incorporation of long-afterglow particles into waterborne epoxy systems under practical service conditions，a waterborne epoxy composite coatingwith both long-afterglow luminescence and anticorrosion performance was developed through surfacemodification. The effects of modified long-afterglow particles on the corrosion resistance and luminescence stability of the coating were systematically investigated.［Methods］ Long-afterglow particles were surface-modified via a hydrolysis-condensation process and then incorporated intowaterborne epoxy resin to prepare luminescent anticorrosion composite coatings. Fourier transform infrared spectroscopy，scanning electron microscopy，water contact angle measurements，pull-off adhesion test，salt spray test，and electrochemical impedance spectroscopy were adopted to characterizethe surface structure of the modified particles，coating morphology，interfacial adhesion，luminescence stability，and corrosion resistance.［Results］ After modification，organic groups were successfullygrafted onto the surface of the long-afterglow particles，greatly improving their dispersion in the waterborne epoxy matrix. As a result，coating micropores and interfacial defects were reduced，and the adhesion between the coating and the metal substrate was enhanced. After 63 days of electrochemicalimmersion，the charge transfer resistance of the modified long-afterglow particle composite coatingremained at approximately 10⁹ Ω ·cm²，indicating good anticorrosion durability. After 20 days of salt spray exposure，the coating still showed effective barrier performance against corrosive media. Its luminescence intensity remained in the range of 0. 04-0. 31 cd/m²，exceeding the minimum threshold required for human visual recognition.［Conclusion］ By improving the interfacial compatibilitybetween long-afterglow particles and the waterborne epoxy matrix，enhancing coating compactness，and increasing surface hydrophobicity，the modified long-afterglow particles simultaneously boost luminescent functionality and long-term anticorrosion performance. This work provides a useful reference for the design and application of luminescent anticorrosion coatings.

Key words: long-afterglow particles, waterborne epoxy coating, interfacial compatibility, anticorrosion coating, electrochemical impedance spectroscopy

摘要： 【目的】针对长余辉发光材料在实际使用环境中，颗粒直接引入水性环氧体系时易团聚、界面相容性差并导致涂层屏蔽性能下降的问题，采用表面改性策略制备兼具长余辉发光功能与防腐性的水性环氧复合涂层，重点研究改性长余辉颗粒对涂层防腐性和发光稳定性的影响。【方法】采用水解缩合改性方法对长余辉颗粒进行表面处理，并将其引入水性环氧树脂体系制备发光防腐复合涂层；通过傅立叶变换红外光谱仪、扫描电子显微镜、接触角测试、拉拔测试、盐雾试验和电化学阻抗谱等，系统表征改性颗粒的表面结构、涂层微观形貌、界面结合性能、发光稳定性及耐腐蚀性。【结果】改性后，长余辉颗粒表面成功引入有机基团，颗粒在水性环氧树脂中的分散均匀性明显改善，涂层孔隙和界面缺陷减少，涂层与金属基体的结合强度提高。改性长余辉颗粒复合涂层经 63 d电化学浸泡后，电荷转移电阻依旧维持在 10⁹ Ω.cm²，表现出良好的防腐性；经 20 d盐雾试验后，复合涂层仍具有较优的腐蚀介质阻隔能力，且发光强度保持在 0. 04~0. 31 cd/m²，超过人类视觉所需的阈值。【结论】通过改善长余辉颗粒与水性环氧基体之间的界面相容性、提高涂层结构致密性并增强表面疏水性，从而实现发光功能与防腐性的提升，为发光型防腐涂层的设计与应用提供参考。

关键词: 长余辉颗粒, 水性环氧涂层, 界面相容性, 防腐涂层, 电化学阻抗谱

CLC Number: 

• TQ635. 2