涂料干燥成膜过程及开裂机理综述.

Coating drying is an important industrial process, but its process is influenced by factors such as temperature, wet thickness, substrate and coating properties, and the mechanism of film cracking is complex, involving interdisciplinary integration. Therefore, it is necessary to study the coating drying film formation process, film cracking mechanism, and measures to suppress cracking. Relevant literature on coating drying, film formation, and cracking were summarized and analyzed since the 1950s. The drying and film forming process of coatings in vertical, horizontal, and mixed drying modes were elaborated. The cracking mechanism of coatings was explored, and the calculation methods for critical crack free internal stress and critical crack free film thickness were summarized. The factors that affect film cracking, including temperature in the drying environment, wet thickness of the coating, substrate properties, and solution properties were analyzed. The morphology and distribution of single crack were investigated. The types of cracks were found out, and the methods to restrain cracking were analyzed from four aspects. [ABSTRACT FROM AUTHOR]