Corrosion Protection of Polyaniline-ZnO Nanocomposite Coatings on Aluminum Pretreated by Organosilane
Nanocomposite coatings containing polyaniline (PANI) and different concentration of zinc oxide (ZnO) as nano-additives dispersions were synthesized and studied by FTIR and SEM. Epoxy resin was used as a binder and nanocomposite coatings were deposited on aluminum 5000 series by dip-coating method. To improve the adhesion of epoxy-polyaniline-ZnO coatings, organosilane film and electrochemical anodizing pretreatment methods were used. In addition, the anticorrosive performance of the PANI-epoxy coatings were investigated in 3.5 wt.% NaCl solution at 65˚C. The coating containing epoxy ZnO-PANI (0.5%) showed better corrosion resistance as compared to the other concentration of ZnO-PANI composites.
Polyaniline , ZnO , Nanocomposite , Aluminum , Corrosion , organosilane
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