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Evaluation of the potential of three non-woven flax fiber reinforcements: Spunlaced, needlepunched and paper process mats

机译:评价三种无纺布氟纤维增强件的潜力:循环,针刺和纸张加工垫

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摘要

This paper presents results from an experimental study of three types of non-woven preforms (needlepunched, spunlaced and mat manufactured using a paper-making process) intended as composite reinforcement. These are potentially very attractive for transport applications. First, the influence of processing on elementary fiber tensile properties is shown to be limited. Then the preforms are evaluated in polypropylene matrix composites and mechanical properties are determined. The structure of non-woven reinforcements is strongly dependent on the manufacturing route. By varying the fiber content it is shown that the most efficient reinforcement for flax fibers is the mat produced by paper processing. The new spunlaced reinforced composites are shown to have slightly lower tensile properties (15% lower strength, and 25% lower stiffness) compared to mat composites at equivalent volume fraction, but further optimization is possible for these materials. Based on the measured constituent properties micromechanics models have been used to estimate composite stiffness. A good correlation is obtained between test results and model predictions.
机译:本文呈现来自三种类型的非织造预成型件(针刺,水刺和垫使用造纸工艺制造)的实验研究的结果旨在作为复合材料增强。这些都是潜在的传输应用非常有吸引力。首先,显示在基本纤维拉伸性能处理的影响被限制。然后,将预成型件在聚丙烯基复合材料的评价和机械性能被确定。非织造增强材料的结构在很大程度上取决于制造路线上。通过改变纤维含量,示出了用于亚麻纤维最有效的增强件是由纸加工生产的垫子。新的水刺增强复合材料被示出与在相同体积分数垫复合材料具有稍低的拉伸性能(15%较低的强度和更低的25%硬度),但进一步优化是可能的,这些材料。基于所测量的组分性质微观力学模型已被用于估计复合刚度。被测试结果和模型预测之间获得的良好的相关性。

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