Film flexibility refers to the flexibility and elasticity of the coating, and is an important indicator of film quality. The test methods for film flexibility generally include the following:
Bending test method: The coating is applied to a flexible substrate and then bent along a specific curvature. After bending, observe changes in the coating, such as cracks or peeling, to assess the flexibility of the coating.
Impact test method: Under specified conditions, a special impact instrument is used to apply a force to the coating surface. Then observe changes in the coating, such as cracks or peeling, to assess the flexibility of the coating.
Tensile test method: This test method is usually suitable for thicker coatings. Tensile on a Tensile Testing Machine and then observe changes in the coating, such as cracks or peeling, to assess the flexibility of the coating.
Nanfangchao reminds you: Different types of coatings and substrates may require different test methods and standards. In actual testing, appropriate test methods and standards should be selected according to the specific situation to obtain accurate and reliable test results.
