GB/T 1730-1993 《Paint film hardness determination method Pendulum damping test》 Related products

The standard "GB/T 1730-1993 Pendulum damping test for the determination of paint film Hardness" specifies the pendulum damping test method for coatings of Paints, varnish and related products. This standard evaluates the Hardness of coatings by measuring the damping time, and provides two test methods, A and B. Method A uses Koenig and Persaz type pendulum damping testers, and Method B uses double pendulum damping testers. The test principle is that when the pendulum swings on the coating surface, the soft coating will cause the swing amplitude to decay more quickly, while the hard coating will decay more slowly.