Development of Functional Organic Coating with Self -Repair Ability for Future Corrosion Resistance Film

开发具有自修复能力的功能性有机涂层，用于未来的耐腐蚀膜

基本信息

批准号：
14350389
负责人：
NAKANO Hiroaki
金额：
$ 9.28万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

The effects of electrolysis factors on the formation of poly(2vinylpyridine) coatings electropolymerized on Zn substrate have been investigated by cyclic voltammetry technique. The amount of poly(2-vinylpyridine) coatings electropolymerized by cyclic voltammetry was significantly dependent on the pH of the bath and the maximum amount of coating was obtained at pH5. This result suggested that the specific amount of proton in the bath should play an important role in the electropolymerization of 2-vinylpyridine. The morphology of the coatings was evidently affected by the hydrogen evolution. Under the electrolysis conditions where the hydrogen evolution rate was increased, the coatings contained many pits and streaks caused by vigorous hydrogen evolution. The poly(2-vinylpyridine) coatings produced by cyclic voltammetry were fine in the bath of pH5 at 20 to 30℃. On the other hand, the current density for polymerization by chronoamperometry was abruptly decreased in the initial stage of t … More wo-dimensional coating formation, then it was subsequently decreased with an increase in the thickness of sound coating. The anode and cathode current density of Zn plate in 3% NaCl solution was decreased by poly(2-vinylpyridine) coating formation on it.The poly(2vinylpyridine) films were electropolymerized on Zn substrate by galvanostatic technique at 30 ℃ in the pH5 aqueous solution containing methanol. The films were also formed by cyclic voltammetry and potentiostatic techniques and were compared with those by galvanostatic electrolysis. The thickness of films formed by galvanostatic electrolysis was increased in proportion to the amount of coulombs but decreased with increasing the current density because of an increase in hydrogen evolution. Based on the FT-IR spectra and the color of films, it was presumed that the structure of poly(2-vinylpyridine) films was changed from non-branched to branched chain type with an increase in current density. The anodic current density for Zn dissolution in 3% NaCl solution were significantly decreased by coating poly(2-vinylpyridine) films. At 50A/m^2 of electropolymerization, the anodic reaction was most inhibited, showing the excellent corrosion resistance. Although the electrochemical techniques had no effect on the thickness and the structure of films, the films formed by galvanostatic electrolysis contained the least cracks to most improve the corrosion resistance. Less

电解因子对在Zn底物上电聚合的聚（2Vinylpyridine）涂层形成的影响已通过环状伏安法技术进行了研究。通过环状伏安法电聚合的聚（2-乙烯基吡啶）涂层的量显着取决于浴室的pH，并在pH5时获得了最大涂层。该结果表明，浴中的特定质子量应在2-乙烯基吡啶的电聚合中起重要作用。涂料的形态显然受氢的进化影响。在氢进化速率增加的电解条件下，涂料包含许多由剧烈的氢进化引起的凹坑和条纹。在20至30℃的pH5浴中，由循环伏安法产生的聚（2-乙烯基吡啶）涂层很好。另一方面，在T的初始阶段，通过计时度测定法的电流密度突然降低了……更多的WO维涂层形成，然后随后随着声音涂层厚度的增加而降低了。 Zn板在3％NaCl溶液中的阳极和阴极电流密度通过其在其上的聚（2-乙烯基吡啶）涂层降低。聚（2vinylpyridine）膜通过含ph5水溶液中的30°的galvanostatic技术在galvanostatic技术上在Zn底物上进行电聚合。这些膜还通过循环伏安法和潜在介发生的技术形成，并与Galvanostatic Electrolsis进行了比较。镀锌电解形成的膜的厚度与酒精的量成比例增加，但由于氢进化的增加，随着电流密度的增加而减小。基于FT-IR光谱和膜的颜色，呈现出聚（2-乙烯基吡啶）膜的结构从非支柱变为分支链类型，并且电流密度增加。通过涂层聚（2-乙烯基吡啶）膜可显着提高3％NaCl溶液中Zn溶解的阳极电流密度。在电聚合的50a/m^2处，阳极反应最受抑制，显示出极佳的耐腐蚀性。尽管电化学技术对膜的厚度和结构没有影响，但镀膜电解形成的膜包含最少的裂缝，以提高耐腐蚀性。较少的