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首页> 外文期刊>The Journal of the Textile Institute >Development of 3D auxetic structures using para-aramid and ultra-high molecular weight polyethylene yarns
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Development of 3D auxetic structures using para-aramid and ultra-high molecular weight polyethylene yarns

机译：使用对芳族芳纶和超高分子量聚乙烯纱线的3D辅助结构的研制

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摘要

In recent times, auxetic woven structures gained considerable attention from the researchers due to their excellent impact properties in high-performance areas. Researchers have done much work on the auxetic behavior of the natural and low-performance yarns in two-dimensional structures. Keeping in view the structural application of auxetic structures, in this work, three-dimensional (3D) woven auxetic fabrics were developed on conventional weaving machines with high-performance yarns. Effect of high-performance yarns (Para-aramid and UHMWPE) as the main structure and binding threads on the auxeticity of 3D fabric structures and the impact properties of their corresponding composites were discussed. For this purpose, eight different orthogonal 3D woven structures were produced with para-aramid filament yarn as warp and weft, whereas ultra-high molecular weight polyethylene (UHMWPE) filament yarn was used as a binder. The tensile load was applied to the 3D fabrics to check their auxeticity, and a change in thickness was recorded. The results showed that as the float length of binder yarn and warp yarn increases with the equal and same ratio, the auxeticity also increases. While auxeticity decreases as the difference between the float length of binder yarn and warp yarn increases. The Negative Poisson's Ratio (NPR) of 3D woven fabrics ranged from -0.9 to -2.98. In the second step, these 3D woven fabrics were fabricated into their composites using unsaturated polyester resin, and the hand-layup technique. Their impact strength was measured using the Charpy test method. Auxetic woven composites made of high-performance yarns structures showed impact strength ranging from 55.64 kJ/m(2)to 158.46 kJ/m(2).
机译：最近，由于它们在高性能区域的出色影响特性，辅助编织结构从研究人员获得了相当大的关注。研究人员在二维结构中对天然和低性能纱线的辅助行为做了很多工作。保持看来，在这项工作中，在这项工作中的辅助结构的结构应用，在具有高性能纱线的常规编织机器上开发了三维（3D）编织的辅助织物。讨论了高性能纱线（Para-Aramid和UHMWPE）作为主结构和结合线对3D织物结构的辅助性的影响及其相应复合材料的冲击性能。为此目的，八种不同的正交3D编织结构用Para-芳纶长丝纱线作为经纱和纬纱制备，而超高分子量聚乙烯（UHMWPE）长丝纱线用作粘合剂。将拉伸载荷施加到3D织物上以检查它们的辅助性，并记录厚度的变化。结果表明，随着粘合剂纱线和经纱的浮法长度随着相同且相同的比率而增加，辅助性也会增加。虽然粘合剂纱线和翘曲纱的浮子长度之间的差异增加，但辅助性降低。 3D编织织物的负泊松比率（NPR）范围为-0.9至-2.98。在第二步中，使用不饱和聚酯树脂和手持式技术将这些3D编织织物制成它们的复合材料。使用夏比试验方法测量它们的冲击强度。由高性能纱线结构制成的辅助编织复合材料显示出影响强度，范围为55.64 kJ / m（2）至158.46 kJ / m（2）。

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