Zinc rich primer powder coating are recommended for use as an anti-corrosive primer where good-quality chemical conversion pre-treatment is recommended or specified but may not be available. Intended to be overcoated with a suitable coating, depending on the end-use application. The primer is partially cured prior to application of the topcoat in order to achieve bonding of the two layers. The substrate must be in a clean, rust-free condition prior to application of the primer.
|Mandrel bend||BS3900 Pt E1||Pass 13mm|
|Scratch resistance||BS3900 Pt E2||Pass 4kg|
|Impact resistance||BS3900 Pt E3||Pass 50 in/Ibs|
|Adhesion||BS3900 Pt E6 (2mm)||No detachment|
|Salt fog resistance||ASTM B117 (1000hrs) (plain mild steel)||Max 0.5mm creep|
|Humidity||BS3900 Pt F2 (1000hrs) (plain mild steel)||No blistering|
Beckryzinc® Beckryzinc® from Dupont is widely used for corrosion resistance using a top coat polyester. This zinc rich powder provides excellent adhesion to the substrate.