Relationship between the Growth Mechanism of Electro-polymerized Films Based on Vinyl Monomers and the Corrosion Resistance of Metals Coated with these Films
Relationship between the Growth Mechanism of Electro-polymerized Films Based on Vinyl Monomers and the Corrosion Resistance of Metals Coated with these Films
复制标题
乙烯基单体电聚合膜的生长机理与镀膜金属耐腐蚀性能的关系
DOI：
10.4139/sfj.44.230
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
I. Sekine
中科院分区：
文献类型：
--
作者：
M. Yuasa;T. Sugiyama;I. Sekine
分别以丙烯醛（Ac）和2-乙烯基吡啶（VPy）为单体，在不同金属表面制备了电聚合膜，研究了两种膜的生长机理与金属表面耐蚀性的关系。在所有电聚合条件下，VPy膜均较厚（约10μm，Ac为1μm）。在腐蚀试验中，VPy膜比Ac膜具有更好的耐腐蚀性。两种类型的生长机制也不同。在电多晶化过程中，Ac膜充当绝缘体，但基于VPy的膜充当离子导体。研究表明，如果在电聚合过程中是离子导电的膜能够i）形成较厚的膜，并且ii）在后处理之后比绝缘膜更容易绝缘，则涂覆有EP膜的金属更耐腐蚀。
Electro-polymerized (EP) films based on acrolein (Ac) and on 2-vinylpyridine (VPy) monomers were synthesized on various metals, and the relationship between the growth mechanism of the two types of films and the corrosion resistance of the coated metals was investigated. At all conditions of electro-polymerization, VPy films were thicker (about 10μm vs 1μm for Ac). In corrosion tests, metals coated with the VPy films had better corrosion resistance than those coated with Ac films. The growth mechanisms of the two types also differed. During electropolymorization, the Ac films acted as an insulator, but those based on VPy acted as an ion-conductor. The study showed that the metal coated with EP film is more corrosion resistant if the film that are ion-conducting during electropolymerization can i) form thicker films, and ii) make possible easier insulation after post-treatment than insulationg films.