INVESTIGATIONS ON THE MANUFACTURING AND MECHANICAL PROPERTIES OF SPUN YARNS MADE FROM STAPLE CF FOR THERMOSET COMPOSITES
INVESTIGATIONS ON THE MANUFACTURING AND MECHANICAL PROPERTIES OF SPUN YARNS MADE FROM STAPLE CF FOR THERMOSET COMPOSITES
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DOI：
10.1515/aut-2016-0034
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发表时间：
2017-12-01
影响因子：
1.1
通讯作者：
Cherif, Chokri
中科院分区：
文献类型：
--
作者：
Hasan, Mir Mohammad Badrul;Hengstermann, Martin;Cherif, Chokri
本文报道了生产由从工艺废料中获得的短碳纤维（CF）组成的纱线的研究结果，该纱线用于制造特别适用于热固性应用的复合材料。为此，对100%短纤维CF和60%短纤维CF与40% PVA纤维在梳理、并条和纺纱过程中的加工性能进行了对比分析。通过改变捻度水平来生产混合纱线。然后使用热水处理溶解混合纱线的PVA纤维。研究了100%短纤维和短纤维与PVA混纺纱经热水处理前后的力学性能。此外，还通过用环氧树脂浸渍100%短纤维CF纱线和混合纱线（PVA溶解后）来制备测试样品。在固结状态下的纱线的拉伸测试的结果表明，在热水处理后以80 T/m生产的混杂纱线表现出原始长丝丝束的拉伸强度的约75%，并且预期混杂纱线可以应用于制造用于承载结构的热固性基复合材料。
This article reports the results of investigations carried out to produce yarns consisting of staple carbon fiber (CF) obtained from process waste for the manufacturing of composites suitable especially for thermoset applications. For this purpose, a comparative analysis is done on processability between 100% staple CF and 60 weight% staple CF mixed with 40 weight% PVA fibers in carding, drawing and spinning process. The hybrid yarns are produced by varying twist level. The PVA fibers of the hybrid yarn are then dissolved using hot water treatment. The mechanical properties of yarns consisting of 100% staple CF and hybrid yarns consisting of staple CF and PVA before and after hot water treatment are investigated. Furthermore, test specimen is also prepared by impregnating 100% staple CF yarn and the hybrid yarns (after the dissolving of PVA) with epoxy resin. The results of the tensile test of the yarns in consolidated state reveals that the hybrid yarn produced with 80 T/m after hot water treatment exhibits approximately 75% of the tensile strength of virgin filament tow, and it is expected that the hybrid yarns can be applied for the manufacturing of thermoset based composites for load bearing structures.