Corrosion protective characters of zinc flake
Zinc metal providing cathodic protection against corrosion. Especially, zinc flakes also have the advantage of excellent barrier protection. The barrier effect provides long-term protection while cathodic protection against corrosion is only temporarily.
Cathodic protection against corrosion requires a conductive contact both between the zinc particles themselves. Zinc flakes have a more extensive contact which allows better electrical conductivity and consequently better anti-corrosive properties.
Advantage of zinc flake coating
Because of their lamellar shape, zinc flakes have a fundamentally higher specific surface area than spherical zinc dust. The correspondingly higher binder content is decided by formulations with lower pigment volume concentration. As a result this provides advantages for both handling of pigments and paint properties.
Less zinc content in paint
No blistering
Smooth surface
Lower weight
Greater flexibility
Good overcoatability etc.
Application
Repairing damaged parts
Galvanized surfaces
Rust inhibitive pigment for metal structures
Automotive trim
Wheels and under hoodparts
Ships
Railing
Fences
Zinc Flake
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