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Inorganic & Insulation Coatings

Enhancing natural function

Inorganic and insulation coatings - enhancing the natural function

Colloidal silica is used in inorganic coatings, such as silicate paints, to reduce alkalinity and water absorption, which improves durability and anti-soiling properties. In electrical steel applications, colloidal silica is used as a binder in insulation coatings to reduce magnetic losses (i.e., leak currents) and increase efficiency (e.g., transformers).

Alone or in combination with potassium silicate, adding colloidal silica to coatings will improve the weather resistance and durability of the underlying inorganic material. Colloidal silica also helps reduce internal stress by reducing the shrinkage of inorganic coatings.

Because silica particles in colloidal silica dispersions are fully hydroxylated surfaces – with multiple surface hydroxyl-silanol groups – they are hydrophilic. As a result, inorganic coatings with colloidal silica have good anti-soiling properties, reducing the accumulation of dirt on their surface (i.e., reduced dirt pickup).

Colloidal silica also improves the efficiency of insulation coatings used in electrical steel applications. In addition to reducing magnetic losses, colloidal silica increases the adhesion of insulation coatings to the metal substrate and produces a more controllable coating slurry viscosity.

For more information:
We are here to help you to improve the efficiency of your inorganic and insulation coatings. Please contact us for advice on which colloidal silica products are best for your applications.

See also:
Abrasion & Scratch Resistance

Inorganic compounds could be described as a compound that lack carbon atoms.