Abstract
ABSTRACT Unilaterally surface-densified wood (USD), suitable for applications in solid wood flooring and furniture, can significantly increase wood value when coated with paint. We prepared USD by compacting the individual surface of the wood under different preheating and compression times, and subsequently applied waterborne acrylic paint on its surface to investigate the impact of various unilateral surface densification processes on wood coating properties. Results demonstrated that unpreheated wood exhibited superior paint film adhesion, hardness, and impact resistance. The interfacial bonding strength decreased with increased compression time when not preheated. A comprehensive analysis revealed that wood unilaterally surface-densified without preheating and compression time of 60 s exhibited optimal coating properties, with tight paint film bonding, minimal weight loss of paint film (0.1387 g), adhesion and hardness grades of 0 and 5H, interfacial bonding strength of 2.26 MPa, and an indentation diameter of only 8.3 mm. This study offers valuable insights into the surface coating properties of unilaterally surface-densified wood.
Published Version
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