Q: Why do leveling agents need to be added to coatings?

Question : Why do leveling agents need to be added to coatings?

Answer:During the construction and film formation process of coatings, the presence of external pollutants may also cause leveling defects such as shrinkage cavities and fish eyes. These pollutants are usually oil stains, dust, paint mist, water vapor, etc. from the air, construction tools, and substrates. 

The properties of the coating itself, such as construction viscosity, drying time, etc., can also have a significant impact on the final leveling of the paint film. Excessive construction viscosity and short drying time often result in poorly leveled surfaces.

 
Therefore, it is necessary to add leveling agents and adjust the properties of the coating during construction and film formation to help the coating achieve good leveling.