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Wood-polyvinyl chloride (PVC) composites were prepared using industrial wood particles used for manufacturing three-layer particleboards. The effect of particle size (0.25-0.5, 0.5-1, 1-2, and 2-4 mm) on the mechanical properties of the composites was investigated. The effect of cross-section size (4 × 10, 6 × 15 and 8 × 20 mm 2 ) of composite pieces made by an injection moulding method was also studied. Both the particle size and specimen crosssection area significantly influenced these properties. The tensile and flexural properties as well as the impact strength in general increased with increasing particle size, and decreased with increasing cross-section size. Einfluss von industrieüblichen Holzspanabmessungen auf die mechanischen Eigenschaften von Holz-PVC-VerbundwerkstoffenZusammenfassung Holz-PVC-Verbundwerkstoffe wurden unter Verwendung industrieüblicher Holzspäne, wie sie zur Herstellung von dreischichtigen Spanplatten eingesetzt werden, hergestellt. Der Einfluss der Spangröße (0,25-0,5, 0,5-1, 1-2 und 2-4 mm) auf die mechanischen Eigenschaften der Verbundwerkstoffe sowie der Einfluss der Querschnittsgröße (4 × 10, 6 × 15 and 8 × 20 mm 2 ) der mittels Spritzgusstechnik hergestellten Verbundwerkstoffe wurde

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This study examined, the effect of chemically extracted raspberry pomace on the thermal stability, mechanical properties, flammability, chemical structure and processing of poly(vinyl chloride). It was observed that the pomace in this study was used to extract naphtha, thereby permitting the removal of bio-oil as a factor preventing the obtaining of homogeneous composites. Furthermore, adding 20% raspberry pomace filler after extraction extended the thermal stability time for the composites by about 30%. It was observed that composite density, impact strength, and tensile strength values decreased significantly with increasing concentrations of filler in the PVC matrix. At the same time, their modulus of elasticity and Shore hardness increased. All tested composites were characterized by a good burning resistance with a flammability rating of V0 according to the UL94 test. Adding 20 to 40% of a natural filler to the PVC matrix made it possible to obtain composites for the production of flame resistant elements that emitted less hydrogen chloride under fire conditions while ensuring good rigidity.