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采用恒电位法在铝阴极上原位电化学聚合丙烯酸（ＡＡ）形成聚合涂层，研究了电聚合电位、支持电解质及单体浓度等对成膜的影响，考察了电流密度随电聚合时间的变化趋势．实验结果表明，当电聚合电位为８．０Ｖ时，一定浓度的丙烯酸溶液中添加０．０５ｍｏｌ·Ｌ－１ＡｌＣｌ３支持电解质，电聚合３０ｍｉｎ即可得到３～５μｍ厚致密涂层．室温下，含１５μｍ厚致密涂层的铝样在３０ｇ·Ｌ－１ＮａＣｌ溶液中浸泡近一个月时间，涂层才破裂脱落．用扫描电子显微镜（ＳＥＭ）和Ｘ射线光电子能谱（ＸＰＳ）技术确证了膜层的形貌结构，讨论了Ａｌ－ＡＡ阴极电化学聚合的机理．
The potentiostatic method was used to electrochemically polymerize acrylic acid (AA) in situ on the aluminum cathode to form a polymeric coating. The effects of electropolymerization potentials, supporting electrolytes and monomer concentration on the film formation were investigated. The effects of current density on the electropolymerization time Trend. The experimental results show that when the electropolymerization potential is 8.0V, a certain concentration of acrylic acid solution with 0.05mol·L-1AlCl3 support electrolyte, electropolymerization 30min get 3 ~ 5μm thick dense coating. At room temperature, a 15μm thick coating of aluminum sample immersed in 30g · L-1NaCl solution for nearly a month before the coating ruptured. The morphology of the film was confirmed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The mechanism of electrochemical polymerization of Al-AA cathode was discussed.