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首页> 外文期刊>Journal of Applied Polymer Science >Wood-Fiber/High-Density-Polyethylene composites: Compounding process
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Wood-Fiber/High-Density-Polyethylene composites: Compounding process

机译：木纤维/高密度聚乙烯复合材料：复合工艺

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The compounding process directly influenced the compounding quality of wood-polymer blends and finally affected the interfacial-bonding strength and flexural modulus of the resultant composites. With 50 wt % wood fiber, the optimum compounding parameters for the wood-fiber/high-density-polyethylene blends at 60 rpm were a temperature of 180degreesC and a mixing time of 10 min for the one-step process with a rotor mixer. The optimum compounding conditions at 90 rpm were a temperature of 165degreesC and a mixing time of 10 min. Therefore, a short compounding time, appropriate mixing temperatures, and a moderate rotation speed improved the compounding quality of the modified blends and the dynamic mechanical properties of the resultant composites. The melt torque and blend temperature followed a polynomial relationship with the loading ratio of the wood fiber. The highest melt torque and blend temperature were obtained with 50% wood fiber. The coupling treatment was effective for improving the compatibility and adhesion at the interface. The two-step process was better than the one-step process because the coupling agents were more evenly distributed at the interface with the two-step process. (C) 2004 Wiley Periodicals, Inc.
机译：混合过程直接影响木材-聚合物共混物的混合质量，最终影响所得复合材料的界面结合强度和弯曲模量。对于木纤维/高密度聚乙烯混合物，以50 wt％的木纤维为基准，在60 rpm转速下，最佳混合参数为180℃的温度和10分钟的混合时间，适用于转子混合器的一步法生产。 90 rpm时的最佳混合条件为温度165℃，混合时间为10分钟。因此，较短的混合时间，合适的混合温度和适度的旋转速度改善了改性共混物的混合质量和所得复合材料的动态机械性能。熔体扭矩和共混温度与木材纤维的负载比呈多项式关系。使用50％的木纤维可获得最高的熔体扭矩和混合温度。偶联处理对于改善界面的相容性和粘合性是有效的。两步法比一步法更好，因为偶联剂在两步法的界面更均匀地分布。 （C）2004年Wiley Periodicals，Inc.

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