Influence Of Different Machining And Treatment Methods On Surface Characteristics Of Poplar Wood

Wood surface characteristics, which impacts directly the function and decoration characteristics of wood product, has extreme relationship with coating (weathering performance), bonding (adhesion), hindering fungi (against fungi and insects), and so on. The results of related studies have more popular applications in wood industrial process and more academic value in wood science and technology. This study focused on roughness, wettability and surface free energy of wood surface characteristics. Analysis the effects of machining treatment, boron compounds treatment and silane coupling agent treatments (KH55、KH560、KH570). Characterize the interfacial morphology, surface chemical element energy spectroscopy and adhesive properties. Investigate the influence of surface physical and chemical characteristics with different machining and treatments.The main conclusions were summarized as followed:1. The roughness and wettability of poplar wood with machining treatment was decreased. The surface free energy was increased while nonpolar component was decreased generally with the increasing granularity of abrasive belt.2. The trend of surface contact angle with boron compounds treatment was decreased. The penetration of treated poplar wood veneer performed better at a high speed. The surface free energy of treated poplar wood veneer was decreased.3. The wettability, surface free energy and polar component of poplar wood veneer were increased with the increasing concentration of silane coupling agent KH550. The emission of formaldehyde was decreased resulted from the breakage of ester bond. The wettability, surface free energy and shear strength were increased while the concentrations of KH560 were increased. And KH560 can improve oxidability of wood surface effectively. The contact angle of diiodomethane on the surface of veneer with KH570 treatment was increased while nonpolar component was weakened, and the penetration of water was enhanced.4. The surface chemical element energy spectrum informed that the chemical bond function occurred on the surface of poplar veneer treated with K.H550, KH560, and KH570.