Promoting the effect of zinc‐rich epoxy via poly(aniline‐co‐anisidine)/iron waste composite on corrosion protection of steel

Abstract

The purpose of this article was to evaluate the performance of a poly(aniline‐co‐anisidine)/iron waste composite (COIW) as an anticorrosive pigment for primer coatings. A procedure was outlined to prepare COIW and evaluate its anticorrosive properties following the electrochemical behavior and corrosion test of the coated steel. Various zinc‐rich epoxy primers were formulated by replacing part of the zinc powder (ZP) pigment with COIW. In all formulas, the ratio of pigment to epoxy resin was fixed at 2. In the pigment mix, the percentage of COIW was ranged from 5% to 60% by weight to the ZP. The performance of the formulated primers was estimated by the salt immersion test and potentiodynamic polarization measurement (corrosion potential, polarization resistance, and corrosion rate essays). It was demonstrated that COIW is effective in protecting steel from corrosion when it is used in combination with ZP.

Corrosion protection of some Cu-based alloys by polyacrylate-alumina nanocomposite coatings

“…The mechanical properties of the coated films showed an increase in the hardness and decrease in the flexibility of the films with increasing alumina particles in the polymeric matrix. This can be attributed to the physical interactions between the hydroxyl groups present on the surface of alumina particles and the functional polar groups in the polymer chains (Diab et al, 2019). The adhesion strength decreases by increasing the proportion of aluminum oxide NPs in the film, this makes sense given the physical bonds formed by adding these particles to the polymeric matrix.…”

The Effect of 2-Mercaptobenzimidazole-Polyaniline-CeO2 Ternary Nanocomposite Addition as a Superior Pigment for Improvement of Corrosion Resistance in Epoxy Coatings

“…Anodic protection, cathodic protection, and organic coating are well known as practical ways for protecting metallic substrates from corrosion. Over time, researchers considerably focused on organic coatings as a nancial protection technique [1][2][3][4][5][6][7]. Among organic coatings, the epoxy (EP) has been used extensively due to the superior features like good barrier properties against corrosive species, suitable adhesion, appropriate chemical, and mechanical resistances [8][9][10][11][12][13][14].…”