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首页> 外文期刊>Journal of Wood Chemistry and Technology >Effects of Defibration Conditions on Mechanical and Physical Properties of Wood Fiber/High-Density Polyethylene Composites
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Effects of Defibration Conditions on Mechanical and Physical Properties of Wood Fiber/High-Density Polyethylene Composites

机译：除纤条件对木纤维/高密度聚乙烯复合材料力学性能的影响

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摘要

Defibration conditions influence wood fiber characteristics and thereby properties of fiber-based materials. In this study, the effects of several defibration conditions on mechanical and physical properties offiber-based wood-plastic composites (WPCs) are illustrated. Various WPCs were tested containing different thermo-mechanical pulps (TMPs) or groundwood pulp (GWP), whereby material composition (50 wt% wood fibers, 47 wt% polymer, 3 wt% coupling agent) and the production process (internal mixer, injection molder) were kept consistent. The data from the experiment revealed that differing defibration conditions led to statistically significant differences in the tested flexural, tensile, and impact properties as well as in the water absorption of WPC. Overall, the GWP and the TMP which was produced under the mildest defibration conditions performed best in fiber-based WPCs. Therefore, grinders and refiners may be equally suitable to produce pulp for WPC usage. As a side-effect within this study, the reinforcing effect of fiber application on flexural and tensile properties was on an extraordinarily high level.
机译：除纤条件会影响木纤维的特性，进而影响基于纤维的材料的特性。在这项研究中，说明了几种解纤条件对基于纤维的木塑复合材料（WPC）的机械和物理性能的影响。测试了各种WPC，其中包含不同的热机械纸浆（TMP）或磨木浆（GWP），从而确定了材料成分（50 wt％的木纤维，47 wt％的聚合物，3 wt％的偶联剂）和生产工艺（内部混合器，注塑成型者）保持一致。实验数据表明，不同的解纤条件导致测试的挠曲，拉伸和冲击性能以及WPC的吸水率具有统计学上的显着差异。总体而言，在最温和的解纤条件下生产的GWP和TMP在基于纤维的WPC中表现最佳。因此，研磨机和磨浆机可能同样适合生产用于WPC的纸浆。作为这项研究的副作用，纤维对弯曲和拉伸性能的增强作用非常高。

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