Powder coating system of leveling agent

There are generally three types of leveling agents, and today the editor of Jianyi Chemical will talk about powder coating systems.

Powder coating system of leveling agent:

The leveling process of powder coating is divided into two stages. The first stage is the melting of powder particles, and the second stage is the melting of powder particles and their flow into the flat paint film. Powder coatings do not contain solvents and do not generate surface tension gradients during the film-forming process. Leveling is more related to substrate wetting.

Acrylic leveling agents are commonly used in powder coatings. If the leveling agent is in liquid form, it is usually necessary to prepare the masterbatch before use. There is also acrylic leveling agent made into powder, specifically used for powder coatings. This product adsorbs liquid acrylic leveling agent on silicon powder, and some low-grade leveling agents are adsorbed with calcium carbonate.

If powder coatings require smoothness and scratch resistance, silicone leveling agents must be used, and silicone leveling agents specifically designed for powder coatings have already been made into powder. Be careful to avoid the formation of shrinkage when using organic silicon leveling agents.