Classified according to their role, the surfactants used in the coating industry can be divided into the following categories:

Emulsifier, pigment surface treatment agent, pigment wetting and dispersing agent, defoaming agent, leveling agent, anti-mold, bactericide, antistatic agent, brightening agent, slip agent, etc.

Application of surfactants in coatings industry-antistatic

Antistatic agents are commonly used cationic surfactants to leak static charges or reduce the friction factor through different channels to suppress the generation of static charges.

It is generally required to have the following characteristics:

① Great anti-static effect

② The effect of preventing static electricity lasting

③ Good miscibility with film-forming substances

④ It does not affect other properties of the coating, such as not making the coating film yellow.

The working principle of the antistatic agent is: using its cationic surface activity characteristics, absorb moisture in the air, make itself polarized, and form a very thin conductive layer on the surface to form a static leakage channel, so its effect depends on its own structure and environment Relative humidity.

 

Application of surfactants in coatings industry-leveling agent

To use a leveling agent to improve the leveling of the coating, the following two factors can be considered:

① Choose an active agent that can reduce the surface tension of the coating/film to greatly improve the leveling of the coating.

② Choose a solvent that has a slow volatilization speed and can reduce the construction viscosity of the paint to improve the fluidity of the paint, extend the leveling time, and achieve the final leveling.