Sub-micrometer mesoporous silica containers for active protective coatings on AA 2024-T3
Sub-micrometer mesoporous silica containers for active protective coatings on AA 2024-T3
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用于 AA 2024-T3 活性保护涂层的亚微米介孔二氧化硅容器
DOI：
10.1016/j.corsci.2017.08.030
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发表时间：
2017
影响因子：
8.3
通讯作者：
Han En-Hou
中科院分区：
文献类型：
--
作者：
Shi Hongwei;Wu Liping;Wang Jun;Liu Fuchun;Han En-Hou
以具有平行孔道结构的介孔氧化硅（SBA-15）为储层，以8-羟基喹啉为缓蚀剂，制备了亚微米级的储液容器。层层组装被用来构建一个壳的聚电解质周围的二氧化硅颗粒。研究了8-羟基喹啉从亚微米容器中释放对酸性或碱性pH值的响应。电化学阻抗谱（EIS）结果表明，含有亚微米容器的环氧涂层的耐腐蚀性有所提高。扫描振动电极技术（SVET）的结果表明，亚微米容器提供了环氧涂层的自修复能力。
In the present work, the sub-micrometer containers were prepared using mesoporous silica particles (SBA-15) with parallel channels as reservoir and 8-hydroxyquinoline as corrosion inhibitor. Layer-by-layer assembling was used to construct a shell of polyelectrolytes around the silica particles. Release of 8-hydroxyquinoline from sub-micrometer containers was studied in response to acidic or alkaline pH values. The results of electrochemical impedance spectroscopy (EIS) show the improvement of corrosion resistance of epoxy coatings containing sub-micrometer containers. Self-healing ability of the epoxy coatings was provided by sub-micrometer containers, as evidenced by the results of scanning vibrating electrode technique (SVET).