How to solve the pigment paste Add paint, color floating problem? First, pigment paste should be selected appropriate wetting and dispersing agent, adjust the particle surface properties, adjust their balance, is the best way to control the floating color. No matter what kind of cause of the color pigment flocculation, floating white, pigment flocculation float color, can be used wetting and dispersing agent to deflocculate, to improve the particle surface properties to prevent or control the float color, float color control in the process of several floating color phenomenon Mutual change, control floating color. If the float is the color of the pigment paste, indicating the coating HLB ratio is large, more hydrophilic, the base paint is added during the preparation of lipophilic low-polar additives to reduce the paint HLB value, if the floating color is white , Indicating that the paint HLB value is relatively small, relatively lipophilic, base paint preparation process add hydrophilic additives to increase the hydrophilicity of the coating.

  In some systems, anti-coating floating color can be added. Anionic wetting and dispersing agent is added to the finished paint to adsorb on the surface of carbon black or organic violet pigment particles to improve the surface properties of pigment particles and enhance the polarity. These nonpolar weaknesses Polar particles have the same polarity as white particles, and the polymer has the same degree of adsorption flocculation, and thus exercise in the coating film drying ability to control the floating color. Use of a strong reduction of surface tension of surfactants, commonly used silicone surfactants, to make it in the coating process of drying to the surface to form a single molecular film, balance the surface tension and control the flowering; but the floating color may still exist.    Add some additives that can produce thixotropic structures, such as kaolin, or silica, form a network structure in the paint film that prevents the pigment from separating, controls pigment flocculation, settling and Bernard juxtaposition flow, The flower phenomenon thus prevents floating or blossoming.