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Effect of Coupling Agent Content and Water Absorption on the Mechanical Properties of Coir-Agave Fibers-Reinforced Polyethylene Hybrid Composites

机译：偶联剂含量和吸水率对椰纤维-龙舌兰纤维增强聚乙烯杂化复合材料力学性能的影响

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摘要

In this study, high-density polyethylene/agave-coir composites with two fiber contents (20 and 30 wt%) and different coir-agave fiber ratios (1-0, 0.8-0.2, 0.60.4, 0.4-0.6, 0.2-0.8, and 0-1) were produced in a two-step process using twin-screw extrusion followed by injection molding. The effect of mixing two different natural fibers and the addition of coupling agent on water absorption, mechanical properties, and morphology is reported. The rule of hybrid mixture was used to predict the properties of the composites, showing a good agreement with the experimental data. The results obtained showed that the combination of different fibers produces composites with unique characteristics as coir fibers absorb less water than agave fibers, while at the same time increase more tensile and flexural strengths. On the other hand, agave fibers were found to improve the impact strength of coir composites. Also, the effect of water absorption on the mechanical properties was studied. Finally, the use of a coupling agent had a positive effect on mechanical properties, while lowering water uptake. (C) 2015 Society of Plastics Engineers
机译：在这项研究中，高密度聚乙烯/龙舌兰纤维复合材料具有两种纤维含量（20和30 wt％）和不同的椰壳-龙舌兰纤维比率（1-0、0.8-0.2、0.60.4、0.4-0.6、0.2-分别使用双螺杆挤出和注塑成型的两步法生产0.8和0-1）。据报道混合两种不同的天然纤维和添加偶联剂对吸水率，机械性能和形态的影响。杂化混合法则用于预测复合材料的性能，与实验数据吻合良好。所得结果表明，不同纤维的组合产生的复合材料具有独特的特性，因为椰壳纤维比龙舌兰纤维吸收更少的水分，同时增加了更多的拉伸强度和弯曲强度。另一方面，发现龙舌兰纤维改善了椰壳纤维复合材料的冲击强度。此外，研究了吸水率对机械性能的影响。最后，偶联剂的使用对机械性能有积极影响，同时降低了吸水率。 （C）2015年塑料工程师学会

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