Development of a new hybrid yarn construction from recycled carbon fibers (rCF) for high-performance composites. Part-II: Influence of yarn parameters on tensile properties of composites
Development of a new hybrid yarn construction from recycled carbon fibers (rCF) for high-performance composites. Part-II: Influence of yarn parameters on tensile properties of composites
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DOI：
10.1177/0040517516658511
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发表时间：
2017-08-01
影响因子：
2.3
通讯作者：
Cherif, Ch
中科院分区：
文献类型：
--
作者：
Hengstermann, M.;Hasan, M. M. B.;Cherif, Ch
本文报道了用40或60 mm的新鲜短纤维CF或再生短纤维CF与一定长度的PA 6纤维混合，成功地生产出混合纱。采用优化的梳理、并条、锭翼工艺路线生产混纺纱。此外，CF长度，CF类型（即处女或rCF），CF体积含量，和纱线的捻度的影响也研究了单向铺设（UD）热塑性复合材料的拉伸性能。结果表明，碳纤维长度、纱线捻度和碳纤维含量对热塑性复合材料的拉伸性能有很大影响。从40和60 mm原生短纤维CF生产的UD复合材料的拉伸强度的比较中可以看出，纱线捻度的增加降低了拉伸强度。然而，扭转对由40 mm原始短纤维CF制造的UD复合材料的拉伸性能的影响是不显著的。由具有40和60 mm原始短纤维CF和rCF的混合纱线制造的UD热塑性复合材料的拉伸强度被发现分别为771 +/- 100、838 +/- 81和801 +/- 53.4MPa，在87 T/m含有50体积% CF的情况下。
This article reports the successful manufacturing of hybrid yarns from virgin staple CF (40 or 60mm) or recycled staple CF (rCF) by mixing with polyamide 6 (PA 6) fibers of defined length. The hybrid yarns are produced using an optimized process route of carding, drawing, and flyer machine. Furthermore, the influence of CF length, CF type (i.e. virgin or rCF), CF volume content, and twist of the yarn are also investigated regarding the tensile properties of unidirectionally laid (UD) thermoplastic composites. The results show that CF length, yarn twist, and CF content of composites play a big role on the tensile properties of thermoplastic composites. From the comparison of tensile strength of UD composites produced from 40 and 60mm virgin staple CF, it can be seen that the increase of yarn twist decreases the tensile strength. However, the effect of twist on the tensile properties of UD composites manufactured from 40mm virgin staple CF is insignificant. The tensile strength of UD thermoplastic composites manufactured from the hybrid yarn with 40 and 60mm virgin staple CF and rCF is found to be 771 +/- 100, 838 +/- 81, and 801 +/- 53.4MPa, respectively, in the case of 87T/m containing 50 volume% CF.