Application of Surfactant in Coatings

The application classification of surfactants in coatings:
is classified according to the role played, the surfactants used in the coating industry can be divided into the following categories: emulsifiers, pigment surface treatment agents, pigment moisturizing dispersants, degreaseers, leveling agents, anti-mold, fungicides, anti-static agents, detergents, slippers, etc.
Application of surfactants in the coating industry - anti-static:
anti-static surfactants that leak static charges or reduce frictional coefficients through different channels to inhibit the generation of static charges. It is generally required to have the following characteristics:
(1) to prevent large static effect
(2) to prevent static effect lasting
(3) and film-forming substances have a good solubility
(4) does not affect other properties of the coating, such as not to yellow the coating .
Anti-static agent's principle is: the use of its cation surface activity characteristics, adsorption of moisture in the air, so that it produces polarization, on the surface to form a very thin conductive layer, forming an electrostitive leakage channel, so its effect depends on its own structure and the relative humidity of the environment.the application of
surfactants in the coating industry - leveling:
to use leveling agents to improve the leveling of coatings, can consider the following two factors:
(1) the selection of the coating / coating surface pressure can reduce the active agent, to greatly improve the leveling of coatings.
(2) the choice of volatile speed is slow and can reduce the viscosity of paint construction solvents, improve paint fluidity, extend the leveling time, to achieve the final level.