Leveling agent and its working principle

Leveling agent and its working principle

Leveling agent is a commonly used coating additive that can promote the formation of a flat, smooth, and uniform coating film during the drying and film-forming process of coatings. A type of substance that can effectively reduce the surface tension of the finishing solution and improve its leveling and uniformity. It can improve the permeability of the coating liquid, reduce the possibility of spots and spots during the brushing process, increase coverage, and make the film evenly and naturally formed. Mainly surfactants, organic solvents, etc.

working principle:

After coating, there is a process of flow and drying to form a thin film, which gradually forms a flat, smooth, and uniform coating. Whether the coating can achieve a smooth characteristic is called leveling. Shrinkage is one of the characteristic defects during coating leveling and film formation processes. In the actual construction process, due to poor leveling, there may be brush marks during painting, roller marks during rolling, orange peel during spraying, shrinkage, pinholes, sagging and other phenomena during drying, all of which are called poor leveling. The occurrence of these phenomena reduces the decorative and protective functions of the coating.