What is the relationship between the fineness of paint paste and color development?

Paint paste should have a certain fineness. Paint pastes have different application fields depending on the fineness of their particles. For example, those with particle fineness above 1000nm are only suitable for interior and exterior wall coatings. Color paste is suitable for ordinary process coloring because of its large particle size, large dosage, and relatively high requirements for covering performance. However, due to the large particle size, this type of paint paste variety is often darker in color. The finer the paint paste particles with the same solid content, the larger the surface area, the tighter the arrangement within the unit volume, the neater the surface reflection, and the moister and brighter the color paste color. However, the finer the paint paste, the better. If it is less than 100nm, it will easily destroy the crystal structure of the pigment and the hue will not be ideal.

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