改性石墨烯/聚苯胺/环氧树脂复合材料的制备及防腐性能的研究

摘要

The modified graphene/polyaniline (PGO/PANI) composites were prepared by the in-situ polymerization method,and the PGO/PANI/EP composite coatings were prepared by blending PGO/PANI with epoxy resin (EP).The corrosion resistance of PGO/PANI/EP was investigated by electrochemical impedance spectroscopy (EIS).Results show that PGO/PANI/EP with 7％ of PGO has the best corrosion resistance among all composites samples.After immersed in 3.5％ NaCl solution for 24 h,the resistance of 7PGO/PANI/EP coatings was 5.99×105 Ω · cm2,which also had better barrier properties.%采用原位聚合法制备改性石墨烯/聚苯胺(PGO/PANI)复合材料,再通过共混的方式将PGO/PANI和环氧树脂复合制备PGO/PANI/EP复合涂层.利用电化学阻抗测试探究了PGO/PANI/EP的防腐能力,并模拟在3.5％NaCl溶液加速浸泡后复合涂层的防腐能力的变化.结果表明,当PGO含量为7％时,复合材料的防腐性能最佳,在3.5％ NaCl溶液中浸泡24 h后复合涂层的涂层电阻为5.99×105 Ω·cm2,仍具有较好的阻隔性能.