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首页> 外文期刊>Journal of Wood Chemistry and Technology >Effect of Fiber Origin, Proportion, and Chemical Composition on the Mechanical and Physical Properties of Wood-Plastic Composites
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Effect of Fiber Origin, Proportion, and Chemical Composition on the Mechanical and Physical Properties of Wood-Plastic Composites

机译：纤维来源，比例和化学组成对木塑复合材料机械和物理性能的影响

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摘要

This study assessed the potential of wood residues as fiber sources for wood-plastic composites (WPC) and examined the impact for intrinsic fiber properties on strength development. Sawmill sawdust, underused wood species, bark, composite panel, and pulp and paper sludge residues were sampled. Fibers were characterized for cellulose content, ash content, and fiber aspect ratio. WPC samples were formed by twin-screw extrusion compounding, followed by injection molding at three fiber proportions. WPC mechanical properties, water uptake, and water swelling increased with increasing fiber proportion, whereas tenacity decreased. WPC made with residues had lower mechanical and physical properties than those made with clean wood, with some exceptions. Kraft sludge produced one of the best WPC formulations in terms of thickness swell, water swelling, tensile strength, and impact energy. Deinking sludge produced the toughest and the most dimensionally stable WPC. Panel industry residues formed roughly similar WPC to those made with clean wood. Bark led to poorest WPC in terms of mechanical properties. High correlation coefficients were found between cellulose content, wood content, and all WPC properties except impact energy. However, the correlations between aspect ratio and the WPC were insignificant.
机译：这项研究评估了木材残留物作为木塑复合材料（WPC）的纤维来源的潜力，并研究了固有纤维特性对强度发展的影响。采样了锯木厂的锯末，未充分利用的木材，树皮，复合板以及纸浆和造纸污泥的残留物。表征纤维的纤维素含量，灰分含量和纤维长径比。 WPC样品是通过双螺杆挤出复合成型，然后以三种纤维比例进行注塑成型而形成的。 WPC的机械性能，吸水率和水溶胀度随纤维比例的增加而增加，而韧性则下降。除了一些例外，用残留物制成的WPC的机械和物理性能比用干净的木材制成的WPC低。就厚度膨胀，水溶胀，拉伸强度和冲击能而言，牛皮纸污泥生产出最好的WPC配方之一。脱墨污泥产生了最坚韧，尺寸最稳定的WPC。面板行业的残留物形成的WPC与用清洁木材制成的残留物大致相似。就机械性能而言，树皮导致最差的WPC。在纤维素含量，木材含量和除冲击能以外的所有WPC特性之间发现了高相关系数。但是，纵横比与WPC之间的相关性微不足道。

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