采用电化学阻抗谱(EIS)方法研究了环氧涂层的厚度与涂装道数对水传输行为的影响结果表明,水分子在具有良好阻挡作用的多道环氧涂层的初始阶段的传输符合Fick定律,求得了水在涂层中的表观扩散系数值,与之相应的干环氧涂层的介电常数εd为4.2.涂层越厚,涂装的道数越多,介质在涂层中的传输越困难,涂层的抗渗透性能越好多道环氧涂层的涂层电容-时间曲线类似于理想情况下单道涂层在水溶液中的涂层电容与浸泡时间的关系曲线.
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