| 环氧粉末涂层中介质传输的交流阻抗谱特征 |
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| 引用本文： | 骆素珍,郑玉贵,李劲,张立新,姚治铭,柯伟.环氧粉末涂层中介质传输的交流阻抗谱特征[J].腐蚀科学与防护技术,2001,13(4):199-202. |
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| 作者姓名： | 骆素珍 郑玉贵 李劲 张立新 姚治铭 柯伟 |
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| 作者单位： | 中国科学院金属研究所 |
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| 基金项目： | 国家自然科学基金重点项目 ( 5 98310 30 )，国家重点基础研究专项经费 (G19990 6 5 0 )资助 |
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| 摘 要： | 在60℃的NaCl溶液中，利用交流阻抗技术研究了不同固化度熔融结合环氧粉末涂层(FBE)的 交流阻抗特征，分析了涂层固化交联结构与介质传输行为的关系.结果表明：涂层的固化度 越高，涂层的抗渗透性能越好，而高温下固化短时间的涂层与固化温度不够高的长时间固化 涂层，即使两者的固化度相近，但其抗渗性能有一定的差异，这与涂层的微观交联结构密切 相关.
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| 关 键 词： | 环氧粉末涂层 介质传输 固化度 |
| 文章编号： | 1002-6495(2001)04-0199-04 |
| 修稿时间： | 2000年10月28 |
CHARACTERISTICS OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OF MEDIUM PERMEATION IN FUSION BONDED EPOXY POWDER COATINGS |
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| LUO Suzhen,ZHENG Yugui,LI Jin,ZHANG Lixin,YAO Zhiming,KE Wei.CHARACTERISTICS OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OF MEDIUM PERMEATION IN FUSION BONDED EPOXY POWDER COATINGS[J].Corrosion Science and Protection Technology,2001,13(4):199-202. |
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| Authors: | LUO Suzhen ZHENG Yugui LI Jin ZHANG Lixin YAO Zhiming KE Wei |
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| Abstract: | The characteristics of electrochemical impedance spe ctroscopy (EIS) for coatings with different curing degree in 1mass% NaCl solutio n at 60℃ were studied by EIS technique. The relationship between curing degree and behavior of medium permeation was discussed. The results showed that the med ium permeation behavior in the coatings was mainly determined by curing degree a nd the cross-linked structure.The resistance to medium permeation of the coating s increased with increasing of curing degree. The coatings with the same curing degree (DOC), but enduring different curing processes, had different anti-permea bility. The coating, which was cured at 220℃ for 5min, had higher anti-permeabi lity than the coating which was cured at 160℃ for 60min.The above phenomenon ma y be attributed to the increasing of number of cross-linked bonds. |
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| Keywords: | epoxy powder coating medium permeation curing degree EIS |
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