Why do coating adhesion tests?

Coating adhesion testing is a measurement of the adhesive strength of a coating and is usually used to assess the bonding strength of the coating to the substrate. The main purpose of coating adhesion testing is to ensure a strong bond between the coating and the substrate to provide long-lasting coating protection and to ensure that the coating does not peel, peel or crack during use.

Coating adhesion testing can be carried out before, during and after paint application. Before construction, it is possible to check whether the preparation of the surface of the substrate is sufficient, thereby ensuring that the coating and the substrate are firmly combined. During construction, the construction quality of the paint can be checked, and the construction parameters of the paint can be adjusted in time to ensure that the adhesion of the coating meets the requirements. After construction, the coating can be inspected and evaluated to ensure the quality and service life of the coating.

Coating adhesion testing is usually carried out by standard test methods, such as ASTM, ISO, etc. The specific test methods vary depending on factors such as coating type, substrate type and use requirements. Common coating adhesion testing methods include tensile test, cutting test, tear test, impact test, etc. Through these tests, the bonding strength between the coating and the substrate can be evaluated, and whether the performance of the coating meets the requirements can be determined, providing technical support and guarantee for the construction and use of the coating.