Abstract: The title polyaniline/attapulgite/epoxy compound corrosion protective coatings was prepared using polyaniline/attapulgite (PANI/ATP) as fillers and epoxy resin as binder. The effect of state of PANI/ATP, proportion of PANI/ATP and curing agent ratio on corrosion resistance was investigated. The characterization and performance of the compound corrosion protective coatings were also evaluated by Fourier transform infrared spectroscopy(FR-IR), open circuit potential (OCP)method, and potentiodynamic po-larization curves (Tafel). The Tafel and OCP suggested that the compound corrosion protective coatings with the 5% PANI/ATP exhibited the best performance in terms of corrosion resistance, corrosion potential was -1.098 V. which was 327 mV higher than the pure epoxy coatings.Furthermore, the mechanical properties of the coatings film with PANI/ATP was improved greatly, compared to the pure epoxy coatings.

Key words: polyaniline/attapulgite, anti-corrosion coatings, anti-corrosion property, potentiody-namic polarization curves(Tafel), open circuit potential(OCP)

摘要： 以聚苯胺／凹凸棒土纳米复合材料（PANI/ATP）作为填料，以环氧树脂为成膜物质，制备了 PANI/ATP环氧复合防腐涂料。研究了 PANI/ATP的状态、PANI/ATP的添加量、固化比等对涂层的防腐性能的影响。采用傅里叶红外光谱（FT-IR）、开路电位（OCP）及极化曲线（Tafel）等测试手段对复合涂层进行了结构表征和防腐性能研究。Tafel极化曲线和开路电位显示，在填料量为 5%的情况下，复合涂层的防腐性能较佳，腐蚀电位为 -1.098V，较纯环氧涂层高 327mV；添加了 PANI/ATP的涂层较纯环氧涂层的力学性能有很大的提高。

关键词: 聚苯胺／凹凸棒土, 防腐涂料, 防腐性能, Tafel极化曲线, 开路电位