How to detect the drying time of architectural coatings (surface drying)?

The purpose of testing the drying time (surface dry) of architectural coatings is to evaluate the drying speed and degree of coating during construction, so as to determine its scope of application and construction quality. If the drying time of the paint is too long or too short, it will affect the aesthetics and protective performance of the paint surface, so it is necessary to test the drying time to ensure the construction quality. At the same time, the subsequent coating application before the coating surface is completely dry will also affect the adhesion and durability of the coating.

Detection method

The drying time (tack to dry) of architectural coatings is an indicator for evaluating how quickly and how well they dry during application. The following are the detection methods and steps for the drying time of architectural coatings:

1. Prepare the sample : apply the paint evenly on the sample plate to ensure uniform thickness of the coating, and cut it into a suitable size sample after drying.

2. Drying time test : record the drying of the coating within the specified time after application, observe the state of the surface of the sample, such as surface dry, hard dry, etc., and the drying time.

3. Subsequent construction test : According to the suggestion of the paint manufacturer, observe the state of the sample before and after surface drying, so as to evaluate the subsequent construction performance during the construction process and the adhesion and durability of the coating.

4. Data processing : By observing the data obtained from the test, the drying time of the paint is evaluated, and the rating of the paint is usually determined according to the relevant standards to determine whether the paint meets the application requirements.

Beichao reminds you: Different types of paints have different performances in drying time. Therefore, in actual testing, different testing methods and standards should be used according to different types of paints and application scenarios to evaluate the drying speed and degree of paint during construction.

In short, the detection of the drying time of architectural coatings is an indispensable work in construction engineering. Through reasonable detection methods and steps, the drying speed and degree of paint during construction can be evaluated, and the appropriate type and brand of paint can be selected to ensure the construction quality and service life of the building.