The physical or chemical change process of coating from fluid layer to solid coating film is called coating drying; the time of drying process is called drying time. The drying process of the coating film can be traditionally divided into three stages: surface drying, actual drying and complete drying.
Drying time is an important indicator of coatings, which has an important impact on the performance, application effect and efficiency of coating construction. The length of drying time usually directly affects the gloss, adhesion, durability and other properties of the coating. At the same time, the length of paint drying time will directly affect the efficiency and cycle of paint construction, so in paint application and production, it is very important to accurately measure and control the drying time.
To measure the drying time of paint, some test methods are usually used, such as touch method, nail scratch method, abrasion method, hanging vertical stripe method, etc. These test methods can be selected according to actual needs to accurately measure the drying time of paint.
