The GB/T 9753-2007 standard specifies the method of cupping test to evaluate the cracking or detachment resistance performance of Paints and varnish coatings under standard conditions. The coating is tested after deformation by gradually indenting, which is suitable for single coatings and composite coating systems. This test can be tested individually for each coating layer or for the entire coating system to ensure the integrity and durability of the coating.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
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