Electrodeposited silica films post-treated with organosilane coupling agent as the pretreatment layers of organic coating system
Electrodeposited silica films post-treated with organosilane coupling agent as the pretreatment layers of organic coating system
复制标题
有机硅烷偶联剂后处理的电沉积二氧化硅薄膜作为有机涂层体系的预处理层
DOI：
10.1016/j.corsci.2016.01.032
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发表时间：
2016-05-01
影响因子：
8.3
通讯作者：
Hu, Ji-Ming
中科院分区：
文献类型：
--
作者：
Liu, Yan-Hua;Jin, Xiao-Han;Hu, Ji-Ming
本工作提出了一种新型的涂层系统的基础上使用的电沉积二氧化硅（E-SiO2）膜后处理（3-缩水甘油氧基丙基）-三甲氧基硅烷（GPTMS）作为预处理层。硅烷改性的E-SiO2薄膜不仅利用了E-SiO2骨架所提供的高度粗糙和多孔的特征，而且还利用了有机硅烷分子所提供的化学功能化。因此，复合预处理层提供了对顶涂层的改善的粘附性。电化学阻抗谱、盐雾试验、铁溶解测试和扫描振动电极技术的实验结果表明，GPTMS处理的E-SiO2膜构建的涂装体系具有优异的耐腐蚀性能。(C)2016爱思唯尔有限公司版权所有
This work presents a new type of coating system based on the use of electrodeposited SiO2 (E-SiO2) film post-treated with (3-glycidoxypropyl)-trimethoxysilane (GPTMS) as the pretreatment layer. The silane-modified E-SiO2 films take advantage of not only the highly rough and porous features provided by E-SiO2 skeleton, but also the chemical functionalization offered by organosilane molecule. As a result, the composite pretreatment layer provides improved adhesion to the topcoat. In addition, the experimental results of electrochemical impedance spectroscopy, salt spray test, iron-dissolution measurement and the scanning vibrating electrode technique suggest that painting system constructed on GPTMS-treated E-SiO2 films exhibits excellent corrosion performance. (C) 2016 Elsevier Ltd. All rights reserved.