摘要： 【目的】解决防护涂层在服役中因机械磨损、化学侵蚀导致的疏水性下降问题，通过将十八胺（ODA）封装于周期性介孔有机硅（PMO）中得到填料 PMO@ODA，实现涂层受损时 ODA响应释放并多次循环，赋予涂层疏水自修复功能，提升疏水性和防腐性能。【方法】一步法制备负载 ODA的 PMO@ODA填料。将 3% PMO@ODA掺入改性环氧树脂，制得 EP/PO复合涂层。涂层经刻蚀/打磨破坏后，80 ℃加热修复，通过电化学测试、盐雾试验等评估性能。【结果】EP/PO涂层水接触角 102°，疏水性良好。5次刻蚀-修复或打磨-修复后，水接触角稳定（刻蚀后 102°，打磨后 142°）。3. 5%NaCl溶液浸泡 28 d，低频阻抗模值仍超过 10¹⁰ Ω·cm²，金属基本无腐蚀；盐雾 30 d仅划痕轻微腐蚀。【结论】EP/PO复合涂层疏水性和防腐性能优异，ODA可响应释放实现疏水自修复功能，为涂层服役性能衰减问题提供有效解决方案。

关键词: 介孔有机硅, 十八胺, 一步法, 疏水性, 防腐, 自修复, 复合涂层

Abstract: ［Objective］To solve the problem of hydrophobicity degradation of protective coatings caused by mechanical wear and chemical erosion during service. Octadecylamine（ODA） is encapsulated in periodic mesoporous organosilica（PMO） to obtain PMO@ODA fillers. This fillers enable the coating to release ODA responsively even after being damaged several times，therebyendowing the coating with hydrophobicity self-healing function and improving its hydrophobicity andcorrosion resistance.［Method］ PMO@ODA filler loaded with ODA was prepared by a one-potmethod. The EP/PO composite coating was prepared by incorporating 3%PMO@ODA into modifiedepoxy resin. After being damaged by etching or grinding，the coating self-repaired by heating at 80 ℃， then its performance was evaluated by electrochemical tests and salt spray test.［Results］The water contact angle of EP/PO coating was 102°，indicating good hydrophobicity. After 5 cycles of etching-repair or grinding-repair，the water contact angle remained stable（102° after etching-repair and 142° after grinding-repair）. When immersed in 3. 5%NaCl solution for 28 days，the low-frequency impedance modulus was still over 10¹⁰ Ω·cm²，and the metal showed almost no corrosion；after 30 days of salt spray test，only slight corrosion was observed at the scratches.［Conclusion］The EP/PO composite coating has excellent hydrophobicity，self-healing ability and corrosion resistance. ODA can be released responsively to achieve hydrophobicity repair，providing an effective solution to the problem of performance degradation of coatings during service.

Key words: mesoporous organosilica, octadecylamine, one-pot method, hydrophobicity, anti-corrosion, self-healing, composite coating

中图分类号: 

• TQ635. 2