Compression Property of Three-dimensional Honeycomb-structured Fabric Composites
Compression Property of Three-dimensional Honeycomb-structured Fabric Composites
复制标题
三维蜂窝结构织物复合材料的压缩性能
DOI：
10.1007/s10443-021-09965-0
复制
发表时间：
2021
影响因子：
2.3
通讯作者：
Morikawa Hideaki
中科院分区：
文献类型：
--
作者：
Zhu Chunhong;Mori Tokio;Miyamoto Tatsuhiro;Osaki Sae;Shi Jian;Morikawa Hideaki
研究了一种蜂窝结构机织物，探讨了纱线尺寸和织物层数对织物增强聚氨酯弹性体复合材料压缩性能的影响。从正六边形单元组合的横截面角度对蜂窝结构织物进行了分析。采用三种不同细度的纬纱设计并制备了三层织物和四层织物。然后以聚氨酯弹性体为基体树脂，制备了三维蜂窝结构织物。通过面内压缩试验研究了复合材料的缓冲性能。对于具有双纬纱的样品，例如3L-2 W，当压缩到其初始厚度的65%时的应力值（CV65%）、能量吸收（EA）和比能量吸收（SEA）显示出比3L-1 W和3L-1.5W更高的值。结果表明，纬纱细度对织物复合材料的压缩性能有重要影响。纱线越粗，蜂窝壁越厚，蜂窝结构复合材料越轻，压缩性能越差。对于织物层，三层复合材料比四层复合材料表现出更高的压缩性能。其原因被认为是纤维体积含量，这是影响复合材料力学性能的关键参数。由于三层织物复合材料的真实的纤维体积含量高于四层织物复合材料，因此三层织物复合材料具有更高的许用安全应力和能量吸收能力。结果表明，纱线细度和织物层数对蜂窝结构织物的压缩性能有影响，可作为蜂窝结构织物的设计参数。
In this study, a kind of honeycomb-structured woven fabric was investigated and the effect of yarn size and fabric layer on the compression property of the fabric-reinforced polyurethane elastomer composites was discussed. The honeycomb-structured fabric was analyzed from the cross-sectional view of combined regular hexagonal cells. The three-layer fabric and four-layer fabric were designed and fabricated using three different finenesses of weft yarns. After that, polyurethane elastomer was used as matrix resin and the 3D honeycomb-structured fabrics were composited. In-plane compression test was conducted to investigate the cushioning property. For samples with doubled weft yarns, such as 3L-2W, the stress value when compressed to 65% of its initial thickness (CV65%), energy absorption (EA), and specific energy absorption (SEA) showed higher values than 3L-1W and 3L-1.5W. It was concluded that the weft yarn fineness had an important effect on the compression property of fabric composites. The thicker yarn size, the stronger cell wall, and the lightweight honeycomb-structure composite was difficult to be compressed. As to the fabric layers, three-layer composites showed a higher compression property than four-layer ones. The reason for this was considered to be the fiber volume content, which was the key parameter affecting composite mechanical properties. As the real fiber volume content in a three-layer fabric composite was higher than that of a four-layer fabric composite, it was resulted in a higher allowable safe stress and energy absorption ability. It can be concluded that the yarn fineness and fabric layers had an influence on the compression property, which can be seemed as the design parameters of honeycomb-structured fabrics for cushion applications.