Abstract
ABSTRACTThe hybridisation of wood-based panels has gained interest in recent years. Lightweight hybrid panels consisting of wood fibres as faces and a mixture of wood particles with expandable polystyrene (EPS) granules as core layer were manufactured in this study. The effects of initial compression and different face-to-core-layer weight ratios were investigated. Results showed that both variables significantly influence panel properties. The initial compression enhanced the surface layer quality while negatively affecting the core layer. Adding EPS influenced the core layer quality, which improved the panel properties. The weight ratio of the face-to-core-layer also enhanced the bending properties and thickness swelling. The internal bond was weakened by increasing the face-to-core-layer ratio.Abbreviations: WBPs: wood-based panels; EPS: expandable polystyrene; MOR: modulus of rupture; MOE: modulus of elasticity; IB: internal bond; SS: surface soundness; SWR: screw withdrawal resistance; TS: thickness swelling; WA: water absorption
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