1. Wetting and dispersing agents

When solid and liquid come into contact, the original solid-gas interface disappears and a new solid-liquid interface is formed. This phenomenon is called wetting. When a liquid is used to moisten the pigment filler and penetrate it into the agglomerates and aggregates of the pigment filler, if a small amount of surfactant is added to the liquid, the wetting and penetration will be easier. This is the wetting effect. Surfactants that wet or accelerate the wetting of pigment fillers are called wetting agents. The liquid in water-based paint is water. The surface properties of pigments and fillers, the type and amount of wetting and dispersing agents, and the efficiency of dispersing equipment are the main factors affecting dispersion.

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