Leveling agent types and a variety of coating levelling agent respectively. Add in oily paint-Iota

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News > Dynamic industry > Leveling agent types and a variety of coating levelling agent respectively. Add in oily paint

Leveling agent types and a variety of coating levelling agent respectively. Add in oily paint

Coating construction, there is a flow and drying film-forming process, andgradually form a coating of a flat, smooth, uniform. The coating can achieve thesmooth property, called leveling. Shrinkage is one of the characteristics ofcoating defects in leveling and produced film process. In the actual construction process, because the leveling is not good, brush marks the emergence of the brush, appear orange peel roll marks, spraying is generated when the roller coating, in the process of drying shrinkage, accompanied by the emergence ofthe pinhole, sagging and other phenomena, are called leveling is bad, these phenomenon reduces the decoration and the protection of functional coating.Many factors influence the coating leveling, the volatilization of solvent gradientand solubility properties, coating the surface tension, the wet film thickness and surface tension gradient, coating rheology, construction technology andenvironment, one of the most important factors is uniform surface tensionsurface tension gradient of surface tension, surface coating of the wet film filmsproduced in the process and the wet film. Improve the coating leveling need to consider adjusting the formula and adding appropriate additives, paint withsuitable surface tension and reduce the surface tension gradient ability.