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首页> 外文期刊>Journal of Applied Polymer Science >Effect of fiber treatment on the water absorption and mechanical properties of hemp fiber/polyethylene composites
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Effect of fiber treatment on the water absorption and mechanical properties of hemp fiber/polyethylene composites

机译：纤维处理对大麻纤维/聚乙烯复合材料吸水率和力学性能的影响

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摘要

The hemp fiber/polyethylene (PE) composites were prepared by varying the fiber shape (hemp flour and hemp fiber from thermomechanical refining), coupling agent (maleic anhydride grafted and copolymerized onto PE), coupling agent loading method (during fiber treating process in the thermomechanical refiner and compositing process in twin screw extruder), and compositing method (twin screw extruding and batch mixing). The paper firstly measured the moisture absorption properties of the treated fibers. The introduction of coupling agent during fiber treating process decreased effectively the moisture uptake. Then, the water absorption and mechanical properties were investigated on the hemp/PE composites. The loading of coupling agent during fiber treating process decreased the water uptake but also decreased the flexural yield strength, consequently resulted in lower flexural yield strength after water exposure. The composites prepared by batch mixing method were better than by twin screw extruding for the water resistance and mechanical properties.
机译：麻纤维/聚乙烯（PE）复合材料是通过改变纤维形状（麻粉和麻纤维从热机械精制而成），偶联剂（马来酸酐接枝并共聚到PE上），偶联剂加载方法（在纤维的处理过程中）制备的。双螺杆挤出机的热机械精制和复合工艺，以及复合方法（双螺杆挤出和间歇混合）。本文首先测量了处理过的纤维的吸湿性能。在纤维处理过程中引入偶联剂有效地减少了水分吸收。然后，研究了大麻/ PE复合材料的吸水率和力学性能。纤维处理过程中偶联剂的负载量降低了吸水率，但同时也降低了挠曲屈服强度，因此导致水暴露后挠曲屈服强度降低。分批混合法制备的复合材料的耐水性和力学性能均优于双螺杆挤出法。

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