银表面聚苯胺/聚吡咯复合膜的制备及其耐蚀性
Preparation and Corrosion Resistance of Pani/Ppy Composite Films on Sliver Surface
摘 要
以三氯化铁为氧化剂，苯胺、吡咯为基体，采用化学氧化法在银片表面制备了聚苯胺/聚吡咯（Pani/Ppy）复合膜。采用红外光谱（IR）、热重分析（TG）、扫描电子显微镜（SEM）、电化学极化分析、自腐蚀电位-时间分析等研究了复合膜的表面形貌、热力学稳定性及耐蚀性。结果表明：n（Ani）/n（Py）为1/3的复合膜的热分解温度为450℃，能在其工作温度范围内（20~300℃）满足使用要求；复合膜对银片具有明显的防腐蚀效果，其中n（Ani）/n（Py）为1/3的复合膜的防腐蚀效果最佳。
化学氧化法
耐蚀性
polyaniline/polypyrrole (Pani/Ppy) composite film
chemical oxidation
corrosion resistance
Abstract
Polyaniline/polypyrrole (Pani/Ppy) composite films were prepared on the surface of silver by chemical oxidation using ferric chloride as oxidant, aniline and pyrrole as matrix. The surface morphology, thermodynamic stability and corrosion resistance of the composite films were investigated by infrared spectroscopy (IR), thermogravimetry (TG), scanning electron microscopy (SEM), electrochemical polarization analysis and self-corrosion potential-time analysis. The results show that the thermal decomposition temperature of composite membrane with n(Ani)/n(Py) of 1/3 was 450℃, which could meet the requirements in application at the operating temperature range of 20-300℃. The composite films had obvious anti-corrosion effect on the silver flake. The anti-corrosion effect of the composite film with n(Ani)/n(Py) of 1/3 was the best.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201712005
所属栏目 试验研究
基金项目
收稿日期 2016/9/1
修改稿日期
网络出版日期
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联系人作者刘薇娜(yubo746@163.com)
引用该论文: CHEN Nan,LIU Weina. Preparation and Corrosion Resistance of Pani/Ppy Composite Films on Sliver Surface[J]. Corrosion & Protection, 2017, 38(12): 924
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参考文献
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【4】温靖邦,周海晖,李松林,等. 纳米纤维聚苯胺膜在不锈钢电极表面的生长过程[J]. 物理化学学报,2006,22(1):106-109.
【5】XU J X,JIANG L H,WANG W L,et al. Effectiveness of inhibitors in increasing chloride threshold value for steel corrosion[J]. Water Science and Engineering,2013,6(3):354-363.
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【9】孙通,李晓霞,郭宇翔,等. 循环伏安法制备十二烷基苯磺酸掺杂聚苯胺纳米纤维的聚合过程[J]. 高分子材料科学与工程,2014,30(1):118-121.
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【11】温靖邦,周海晖,李松林,等. 纳米纤维聚苯胺膜在不锈钢电极表面的生长过程[J]. 物理化学学报,2006,22(1):106-109.
【12】张春涛,范文亮,李正良. Q345等边角钢腐蚀疲劳性能试验研究[J]. 振动与冲击,2014,33(2):194-200.
【13】LI Q F,LI C H,XU L K,et al. Corrosion behavior of B30 Cu-Ni alloy and anti-corrosion coating in marine environment[J]. Trans Nonferrous Met Soc China,2007,17:161-165.
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