Leveling agent is a commonly used coating additive, which can promote the formation of a smooth, smooth and uniform coating film during the drying and film forming process of the coating. A class of substances that can effectively reduce the surface tension of the coating liquid and improve its leveling and uniformity. It can improve the permeability of the coating liquid, reduce the possibility of spots and scars when brushing, increase the coverage, and make the film formation uniform and natural. Mainly surfactants, organic solvents, etc. There are many types of leveling agents, and the types of leveling agents used in different coatings are not the same. High boiling point solvents or butyl cellulose can be used in solvent-based finishing agents. Surfactants, polyacrylic acid, carboxymethyl cellulose, etc. are used in water-based finishing agents.
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