导电高分子材料对金属防腐作用的研究

发布时间：2018-06-29 11:10

本文选题：聚苯胺 + 金属　；参考：《天津工业大学》2017年硕士论文

【摘要】：导电高分子材料是一种新型的研究材料,经过近几十年无数科研工作者的不断探索,目前已经成功发展到金属防腐、超级电容器、传感器、隐身材料、电致变色、电致发光、自愈合等等多个方面,而面对目前大量金属腐蚀所带来的严重后果,找到有效遏制金属腐蚀的方法更是十分迫切。因此,寻找合适的导电高分子材料来防止金属腐蚀成为一个很重要的课题。针对聚苯胺的独特的合成机理,本文主要通过化学合成法合成的聚苯胺来对金属进行防腐处理,分别通过聚苯胺压片、聚苯胺化学连接和聚苯胺电镀三种形式的防腐材料来与金属进行连接。实验中主要以304不锈钢金属片来作为研究对象,对比测量了三种连接方式的金属连接聚苯胺前后,金属在相同酸液浓度下因腐蚀而导致的质量变化,计算得出聚苯胺对金属的阳极保护效率分别为99.82%,87.61%,94.51%。鉴于聚苯胺压片连接不稳定,聚苯胺化学连接时无法确定粘附在金属上的聚苯胺量,最终选定电镀为最佳连接聚苯胺同金属的方式。同时探究了聚苯胺对四种纯金属铁、锰、铬、钼及含有这四种金属成分的混合金属304不锈钢的作用,并考虑了电镀时间、电镀电流、介质酸性溶液的浓度、温度等条件对聚苯胺防腐效果的影响,并通过实验得出聚苯胺对于上述五种金属的防腐效果分别为89.51%、92.92%、94.59%、97.12%、96.35%。根据企业中应用的酸化缓蚀剂的技术要求,电镀聚苯胺,测试纯铁片,二级,测试纯铬片,二级,测试纯锰片,一级,纯钼片,一级,304不锈钢金属片,一级。结果表明,介质腐蚀酸液浓度和温度的改变对金属溶解速度有所影响,但不能改变聚苯胺对于金属具有的防腐效果。在电镀聚苯胺过程中,电镀电压电镀时间的增加虽有利于产生更好的聚苯胺防腐效果,但考虑实际应用,适当的电镀时间与电镀电压的选择是必须的。实验结果表明,聚苯胺对金属有很好的防腐效果,找到合适的连接方法将其很好的连接到金属片上即可获得很好的防腐效果。
[Abstract]:The conductive polymer material is a new kind of research material. Through the continuous exploration of numerous scientific researchers in the last few decades, it has been successfully developed into metal anticorrosion, supercapacitor, sensor, stealth material, electrochromic, electroluminescence, self healing and so on, and the serious consequences brought by a large amount of metal corrosion, It is very urgent to find effective methods to prevent metal corrosion. Therefore, it is a very important task to find suitable conductive polymer materials to prevent metal corrosion. In this paper, the special synthesis mechanism of polyaniline is used to prevent corrosion of metal by polyaniline, which is synthesized by chemical synthesis method. Three kinds of anticorrosive materials, polyaniline chemical connections and polyaniline electroplating, are used to connect with metals. In the experiment, 304 stainless steel sheets are used as the research objects. The quality changes of metal in the same acid concentration and corrosion are measured and measured by 304 stainless steel sheets. The anodic protection efficiency of aniline to metal is 99.82%, 87.61% respectively. 94.51%., in view of the instability of the polyaniline bonding, can not determine the amount of polyaniline adhered to the metal when the polyaniline chemical connection is connected. Finally, electroplating is selected as the best way to connect polyaniline with metals. At the same time, polyaniline has been explored for four kinds of pure metal iron, manganese, chromium, molybdenum and containing. There are four kinds of metal mixed metal 304 stainless steel, and the effect of electroplating time, electroplating current, concentration of medium acid solution, temperature and other conditions on the anticorrosion effect of polyaniline is considered. Through the experiment, it is concluded that the anticorrosion effect of polyaniline on the above five kinds of metals is 89.51%, 92.92%, 94.59%, 97.12%, 96.35%., according to the enterprise The technical requirements of acidification inhibitors used in the industry, electroplating polyaniline, testing pure iron sheet, grade two, testing pure chromium tablets, grade two, testing pure manganese slices, first grade, pure molybdenum sheet, first grade, 304 stainless steel sheet, first grade. The results show that the change of concentration and temperature of medium corrosion acid has some influence on the dissolution rate of metal, but it can not change polyaniline for gold. In the process of electroplating polyaniline, the increase of electroplating voltage electroplating time is beneficial to the production of better anticorrosion effect of polyaniline, but considering the practical application, the choice of the appropriate electroplating time and electroplating voltage is necessary. The experimental results show that polyaniline has a good anticorrosion effect on the metal and finds a suitable connection. The method can connect well to the metal sheet to achieve good anticorrosion effect.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG174.42

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