Investigating the effects of fiber surface treatment and alignment on mechanical properties of recycled carbon fiber composites
Investigating the effects of fiber surface treatment and alignment on mechanical properties of recycled carbon fiber composites
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DOI：
10.1016/j.compositesa.2019.01.012
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发表时间：
2019-04-01
影响因子：
8.7
通讯作者：
Tehrani, Mehran
中科院分区：
文献类型：
--
作者：
Van de Werken, Nekoda;Reese, Malcolm S.;Tehrani, Mehran
再生碳纤维的成本只有原始纤维的一小部分，它们的复合材料有可能获得适合广泛应用的机械性能。当被回收时，碳纤维通常会变成毫米到厘米长，并出现像棉花糖一样的纠结块。在本工作中，将回收碳纤维加工成单向取向和二维随机取向的再生碳纤维毡。对再生碳纤维的表面进行了研究，以了解表面特征对再生碳纤维复合材料力学性能的影响。通过拉伸试验确定了纤维表面质量、长径比和取向对复合材料力学性能的影响。结果表明，加工工艺对再生纤维复合材料的性能有显著影响。分析模型得到了验证，并随后用于为提高再生碳纤维复合材料的力学性能提供了可行的方法。
Recycled carbon fibers cost a fraction of virgin fibers and their composites can potentially achieve mechanical properties suitable for a wide range of applications. When recycled, carbon fibers usually become millimeter to centimeter long and emerge as a tangled mass analogous to cotton candy. In this work, recycled carbon fibers were processed into unidirectionally aligned and two-dimensional randomly oriented recycled carbon fiber mats. The surface of the recycled carbon fibers was probed to understand the significance of surface characteristics on the mechanical behavior of recycled carbon fiber composites. Tensile testing was used to determine the influence of fiber surface quality, aspect ratio, and alignment on mechanical properties of the composites. It is concluded that the processing has a significant effect on the properties of recycled fiber composites. An analytical model was validated and subsequently used to provide insight into viable methods for improving mechanical properties in recycled carbon fiber composites.