The effect of polyaniline phosphate on mechanical and corrosive properties of protective organic coatings containing high amounts of zinc metal particles

Abstract

Abstract The objective of this paper is to reduce the zinc metal content in organic coatings while preserving their high anticorrosive efficiency. The two goals can be achieved by using conductive polymers as components of the protective coating. Polyaniline phosphate (PANI-H 3 PO 4 ) was investigated as the conductive polymer and was also used in surface treatment of steatite talc Mg 3 (Si 4 O 10 )(OH) 2 . Both PANI-H 3 PO 4 and Mg 3 (Si 4 O 10 )(OH) 2 /PANI-H 3 PO 4 were specified using physico-chemical parameters. An epoxy ester resin was used as binder for the organic coatings investigated. Organic coatings were prepared by combining zinc metal with PANI-H 3 PO 4 or Mg 3 (Si 4 O 10 )(OH) 2 /PANI-H 3 PO 4 . The mechanical resistance of the prepared films was evaluated using the results of mechanical tests. The anticorrosive efficiency of the prepared films was evaluated using the results of direct corrosion tests.