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What are the methods to distinguish PVDF from powder-coated aluminum?

Update:14-03-2020
Summary:

Fluorocarbon aluminum (PVDF) coating is an electrostati […]

Fluorocarbon aluminum (PVDF) coating is an electrostatic spraying and a liquid spraying method. It belongs to high-grade coatings and has a higher price.

The coated aluminum flake powder is sprayed on the surface of aluminum by spraying equipment (electrostatic spraying machine). Under the action of static electricity, the powder will be uniformly adsorbed on the surface of the aluminum sheet roll to form a powder coating. The powder coating is cured after high-temperature baking and leveling to become the final coating with different effects (various effects of powder coating). In terms of mechanical strength, adhesion, corrosion resistance and aging resistance, the spraying effect of powder coatings is better than the spraying process, and the cost is also lower than spraying with the same effect.

1. Measure the thickness. The thickness of the fluorocarbon coating is 40UM, and the thickness of the powder coating is at least 60UM.2. check the surface flatness, fluorocarbon coatings are generally paint, the higher the surface flatness, the better the leveling. The flatness of the powder coating is poor, that is, the orange peel phenomenon is more obvious.
3. Take a look at the back of the coated aluminum plate. The back of the powder-coated alumium plate has a transition area between the sprayed and unpainted portions. The paint is better.

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