Comparison of adhesion properties of the primers for wide consumption

Abstract

This research focused on comparison of adhesion properties of three different primers for wide consumption. Tested primers differed in their price range, and the conducted experiment aimed to determine whether more expensive primers were providing better adhesion between the substrate material and the coating. The primers were applied on specimens in two layers, each being 30 μm thick (total dry film thickness was 60 μm), as well as in one layer being 45 μm thick. After drying, specimens were exposed to indoor and outdoor atmospheric conditions. Adhesion properties were tested by the cross-cut test, and analysis of obtained results proved that the primers’ price range cannot be considered as an indicator of the primers’ quality with respect to their adhesion properties.

Keywords

• corrosion, surface protection, primer thickness, cross-cut test, adhesion properties