Analysis of the density profile and bending properties of commercial particleboard

This study comprehensively analyzed the bending properties of three types of commercial three-layer particleboards (Boards A, B, and C) to understand the intricate relationships between density profiles and bending properties. Density profiles notably varied among particleboards. Board A exhibited a heightened influence of the outer core-layer density on the bending properties, which surpasses that of the face-layer density. In contrast, Board C exhibited a greater influence of the face-layer density on the bending properties. Board B exhibited the same influence of the face-layer and outer core-layer densities on the bending properties. The outer core layers, manufactured with coarse particles retained long-wood fibers, thereby increasing the bending properties. The influence of the outer core layers on the bending properties varied among particleboards. The complexity in the mechanism of the bending properties was attributed to intricately intertwined factors: density, long-wood-fiber strength, and face-to-core ratio. In conclusion, this study highlights the multifaceted nature of bending properties, emphasizing the complexities among these factors.