2.3.2. Surface Properties

The surface cracking resistance, surface wear resistance and surface scratch resistance of the impregnated decorated blockboard were tested according to the standard of “Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels” (GB/T 17657-2013). For the surface cracking resistance test, the specimen was heated in an oven at 70 °C for 24 h at first, then equilibrated at 25 °C and 50% RH, and finally the surface changes were recorded with a 6× magnifying glass at an illuminance of 800~1000 lx. The surface wear resistance test was performed in Taber 5135, which was operated at 350 rpm with a load of 4.9 N. The weight loss on the flat surface of the specimen (100 mm × 100 mm) was recorded. The surface of the specimen was scored with a diamond needle to evaluate its scratch resistance. During the test, the weight was fixed at 1.5 N.