高纯铝箔表面电聚合化合物防腐特性的试验研究
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摘要
高纯铝箔分别经过电聚合苯胺、吡咯、噻吩表面改性,研究其在铝箔表面聚合物的形貌及防腐特性。结果表明:聚苯胺、聚吡咯、聚噻吩对腐蚀箔有缓蚀抑制作用,且对腐蚀箔隧道孔的生成有一定的促进作用。利用原子力显微镜和扫描电镜对恒压电聚合制备的聚合物进行形貌和结构特征分析,发现三种电聚合化合物薄膜对高纯铝箔腐蚀发孔的影响与聚合物形貌和结构特征有很大关系。通过改变扫描速率、硝酸钠浓度和电聚合表面改性方式对高纯铝箔的腐蚀电池法过程进行极化曲线和交流阻抗研究,分析了电聚合化合物膜对高纯铝箔侵蚀过程的影响效果及其机制。
The surface polymer morphology and corrosion resistance characteristics of high purity aluminum foil were studied after its surface is modified by electropolymerization of aniline,pyrrole and thiophene. The results show that polyaniline,polypyrrole and polythiophene have corrosion inhibition effect on etched foil and promote the formation of etched foil tunnel holes. The morphology and structure of the polymer prepared by constant piezoelectric polymerization were analyzed by atomic force microscope and scanning electron microscope.The results show that the effect of three electropolymerized conductive polymer films on the corrosion holes of high purity aluminum foil is closely related to the polymer morphology and structural characteristics. The polarization curves and AC impedance were studied for the corrosion battery process of high purity aluminum foil by changing the scanning rate,sodium nitrate concentration and electropolymerization surface modification methods. The effect of electropolymerization surface modified polymer film on the erosion process of high purity aluminum foil was analyzed and its mechanism was also investigated.
The surface polymer morphology and corrosion resistance characteristics of high purity aluminum foil were studied after its surface is modified by electropolymerization of aniline,pyrrole and thiophene. The results show that polyaniline,polypyrrole and polythiophene have corrosion inhibition effect on etched foil and promote the formation of etched foil tunnel holes. The morphology and structure of the polymer prepared by constant piezoelectric polymerization were analyzed by atomic force microscope and scanning electron microscope.The results show that the effect of three electropolymerized conductive polymer films on the corrosion holes of high purity aluminum foil is closely related to the polymer morphology and structural characteristics. The polarization curves and AC impedance were studied for the corrosion battery process of high purity aluminum foil by changing the scanning rate,sodium nitrate concentration and electropolymerization surface modification methods. The effect of electropolymerization surface modified polymer film on the erosion process of high purity aluminum foil was analyzed and its mechanism was also investigated.
引文
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[2]YUEH LIEN LEE,·OU BIN LUNG,·YI HUNG ChIU.Effect of frequency and current density on A.C.eching of aluminum electrolytic capacitor foil[J].Journal of Materials Science:Materials in Electronics,2007,18:627-634.
[3]ZHU S Q,BAN C L,JIANG L J.Effect of mechanical attrition on anodizing of DC-etched aluminum foil for electrolytic capacitor[J].Journal of Materials Science:Materials in Electronics,2015(10):283-287.
[4]杜海燕,梁晓鹏,徐晶,柴敏平,邓顺.铝电解电容器用铝箔发孔腐蚀工艺的研究[J].有色金属科学与工程,2012,3(1):27-31.
[5]李毅,廖霞,肖仁贵,王建中.硝酸根离子对铝箔直流电蚀电极反应过程的影响[J].轻合金加工技术,2016,44(8):66-71.
[6]刘丹露,徐丹,肖仁贵,王建中,邹腾.硝酸介质对铝箔直流脉冲电蚀电流密度的影响[J].电子元件与材料,2014,33(9):34-37.
[7]班朝磊,郭刚,朱淑芹,李新芹,王冬梅,王中美,魏艳丽.缓蚀剂对高压铝箔电蚀特征的影响[J].轻合金加工技术,2012,40(5):67-69.
[8]徐丹,刘丹露,肖仁贵,王建中.铝箔电化学侵蚀中缓蚀剂作用.贵州大学学报,2015,32(6):62-66.
[9]王少丹,肖仁贵,徐丹,李毅,王建中.电聚合表面改性对电容器用高纯铝箔侵蚀行为的影响.轻合金加工技术,2017,45(11):45-50.