采用直接混合法简便地合成了纤维状聚苯胺纳米材料（PAni），其电导率达1．299S·cm。电化学阻抗谱表明，在3．5％NaCl溶液中，聚苯胺添加量为0．4％～0．6％时，涂覆聚苯胺／环氧复合涂层（P／E）的A3钢有很好的耐蚀作用，浸泡2400h后阻抗值仍大于10^9Ω·cm^2。
Polyaniline nanofibers （PAni） with high conductivity of 1. 299 S · cm were synthesized by rapid mixed method. The results of electrochemical impedance spectroscopy （EIS） showed that the polyaniline/epoxy （P/E） composite coating containing 0. 4% to 0. 6% PAni had good corrosion protection performance on A3 steel in NaCl （3.5%） solution. Impedance of the coating was more than 10^9 Ω · cm^2 after the electrode was immersed for 2400 h.
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