Do you know the effect of solvent evaporation rate on coating appearance?

Spray coating, dip coating, brush coating, roller coating, flow coating, etc. are commonly used coating methods in contemporary industrial production applications. However, no matter which coating method is used, some coating defects will be more or less formed on the surface of the coating, including orange peel, dot problems, whitening of the coating, sagging, blistering, pinholes, etc. These coating defects are related to the state of the object to be coated, coating process, type of coating liquid, coating method and operation, coating environment and other factors. To solve these problems of coating problems, it can be improved by purifying the production environment, keeping the ambient temperature, selecting high-purity raw materials, changing the coating method, etc., among which some single components with different boiling points are added to the system in an appropriate amount. Solvent or mixed solvent is also a more effective way to solve the apparent ills.