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Color Retention

Last updated: July 19, 2024

What Does Color Retention Mean?

It is the ability of the metal substrate or finishing membrane to maintain its color for a longer period of time without chalking or fading. Color retention is a property that defines a reliable material selection and coating solution. It is used to determine the best coating material and durable design material for aesthetic value.

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Corrosionpedia Explains Color Retention

The chance of color in metallic surfaces is attributed to galvanic corrosion, which form compounds on the surface that assume different colors. Also, the change in color of the coating solution depicts a flaw that may affect the substrate below the protective membrane.

This change in color is caused by heavy metals dissolved in the fluids that are in contact with the surface. Color retention in coating formulas is obtained by using additives, plasticizers and stabilizers. Thus, heavy metals affect the levels of color retention in inorganic materials.

In metals, color retention tests are usually done as chemical analysis procedures. In order to achieve long-lasting coating color retention, it is advisable to always apply primers prior to applying the main coat and to also ensure that the substrate is clean. The adherence of the paint or coat to the substrate brings about the color durability.

Therefore, the type of finishing will determine the state of the coating and color retention. Basically, different coatings have various levels of color retention, hence it is an indicator of superiority in paints or coats. Coatings with high color retention portray high resistance to corrosion properties.

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