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Micelles-based self-healing coating for improved protection of metal
Arabian Journal of Chemistry ( IF 6 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.arabjc.2018.09.005
Ye Ying , Zequn Liu , Juanjuan Fan , Nan Wei , Xiaoyu Guo , Yiping Wu , Ying Wen , Haifeng Yang

Abstract In this work, an eco-friendly corrosion inhibitor was synthesized by embedding 4-methyl-4H-1,2,4-triazole-3-thiol (4-MTTL) into phytic acid (IP6) micelles via heating (donated as IP6@4-MTTLx). The corrosion inhibitor, IP6@4-MTTLx microcapsules with self-healing capability, can be used for metal protection from corrosion in 3.5 wt% NaCl aqueous solution. By means of electrochemical impedance spectroscopy (EIS) and electrochemical polarization, the high inhibition performance of such micelle-based coating on the model metal of copper has been investigated, which is attributed to the synergistic effect of the 4-MTTL molecules and the IP6@4-MTTLx microcapsules. Damage to the coating by external force can be self-healed by leakage of 4-MTTL inside IP6@4-MTTLx microcapsules to seal physically and chemically the cracks.

中文翻译:

基于胶束的自修复涂层可改善金属保护

摘要 在这项工作中,通过加热将 4-甲基-4H-1,2,4-三唑-3-硫醇 (4-MTTL) 嵌入植酸 (IP6) 胶束中合成了一种环保型缓蚀剂(作为 IP6 @4-MTTLx)。具有自修复能力的腐蚀抑制剂 IP6@4-MTTLx 微胶囊可用于金属在 3.5 wt% NaCl 水溶液中的腐蚀保护。通过电化学阻抗谱(EIS)和电化学极化,研究了这种胶束基涂层对铜模型金属的高抑制性能,这归因于4-MTTL分子和IP6@的协同作用4-MTTLx 微胶囊。通过IP6@4-MTTLx微胶囊内部的4-MTTL泄漏,物理和化学密封裂纹,可以自愈外力对涂层造成的损坏。
更新日期:2020-01-01
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