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首页> 外文期刊>Composite Structures >Hybrid cork-polymer composites containing sisal fibre: Morphology, effect of the fibre treatment on the mechanical properties and tensile failure prediction
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Hybrid cork-polymer composites containing sisal fibre: Morphology, effect of the fibre treatment on the mechanical properties and tensile failure prediction

机译：含有剑麻纤维的软木-聚合物杂化复合材料：形态，纤维处理对机械性能的影响和拉伸破坏的预测

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摘要

In this study, we investigated the use of short sisal fibre with and without polyethylene-graft-maleic anhydride (PE-g-MA) as a strategy to reinforce cork-polymer composite (CPC) materials. The use of alkali treatment of sisal to improve fibre-matrix adhesion was evaluated. High density polyethylene (HDPE) was used as matrix and the composites were produced in a two-step process using twin-screw extruder followed by compression moulding. FTIR, TGA and XRD were used to confirm the sisal fibre modification. Additionally, morphology, density, diameter and tensile properties of the fibres were evaluated before processing. The hybrid composites containing cork powder (40wt.%) and randomly distributed sisal fibres were evaluated in terms of morphology and mechanical properties. The use of a 10 wt.% sisal fibre in the presence of a 2 wt.% coupling agent based on maleic anhydride, has shown to improve the tensile and flexural properties of the composites. The higher mechanical properties were achieved by using alkali treated sisal fibres and PE-g-MA. In the presence of the coupling agent the composite morphology revealed good interfacial adhesion between the natural components and the polypropylene matrix, being in accordance with the mechanical results. Weibull cumulative distribution was successfully used to accurately predict the tensile strength failure of the hybrid CPC materials.
机译：在这项研究中，我们调查了短剑麻纤维在有无聚乙烯-接枝-马来酸酐（PE-g-MA）的使用中作为增强软木-聚合物复合材料（CPC）材料的策略。评价了剑麻的碱处理方法，以改善纤维基质的粘附性。使用高密度聚乙烯（HDPE）作为基质，并使用双螺杆挤出机，然后进行压塑，以两步法生产复合材料。 FTIR，TGA和XRD用于确认剑麻纤维的改性。另外，在加工之前评估了纤维的形态，密度，直径和拉伸性能。包含软木粉（40wt。％）和随机分布的剑麻纤维的杂化复合材料的形态和机械性能进行了评估。在基于马来酸酐的2重量％的偶联剂的存在下使用10重量％的剑麻纤维已显示出改善了复合材料的拉伸和挠曲性能。通过使用碱处理过的剑麻纤维和PE-g-MA，可以获得更高的机械性能。在偶联剂的存在下，复合物形态显示出天然组分与聚丙烯基质之间的良好界面粘合性，这与机械结果一致。 Weibull累积分布已成功用于准确预测杂化CPC材料的拉伸强度破坏。

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  • 来源
    《Composite Structures》 |2013年第11期|153-162|共10页
  • 作者

    Emanuel M. Fernandes; Joao F. Mano; Rui L. Reis;

  • 作者单位

    3B's Research Croup - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, GuimarSes, Portugal ICVSfiB's - PT Government Associate Laboratory, Braga/GuimarSes, Portugal;

    3B's Research Croup - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, GuimarSes, Portugal ICVSfiB's - PT Government Associate Laboratory, Braga/GuimarSes, Portugal;

    3B's Research Croup - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, GuimarSes, Portugal ICVSfiB's - PT Government Associate Laboratory, Braga/GuimarSes, Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Polymer-matrix composites (PMCs); Hybrid composites; Extrusion; Mechanical behaviour; Fibre reinforced plastic; Cork;

    机译：聚合物基复合材料（PMC）;混合复合材料;挤压;机械性能;纤维增强塑料;软木;

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