Zhang Qian, Chen Jiaqi, He Ziqin, Liu Wenfu, Kritchenkov Andreii S, Wang Lu, Liu Wanjun, Gao Jing
Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
Engineering Research Center of Technical Textiles, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
Polymers (Basel). 2024 Aug 30;16(17):2476. doi: 10.3390/polym16172476.
Elastic yarns are the key component of high-performance compression garments. However, it remains a challenge to fabricate anti-fatigue yarns with high mechanical force and long elongation for generating compression garments with prolonged wear. In this paper, we report the development of anti-fatigue double-wrapped yarns with excellent mechanical properties by wrapping high-denier Spandex with nylon filaments in opposite twists. In particular, high-denier (560 D) Spandex as the core was untwisted, which can maximally reduce the interaction between the core and wrapping filaments, enabling high elongation of double-wrapped yarns. In addition, we chose 70 D nylon filaments with a tensile force of 3.87 ± 0.09 N as the wrapping materials to provide sufficient force for double-wrapped yarns. Notably, opposite twists were induced for the inner and outer wrapping filaments to achieve a balanced stable yarn structure. By systematically optimizing manufacturing parameters, including inner wrapping density, outer wrapping density, take-up ratio, and drafting ratio, we obtained double-wrapped yarn with excellent tensile stress (32.59 ± 0.82 MPa) and tensile strain (357.28% ± 9.10%). Notably, the stress decay rate of optimized yarns was only 12.0% ± 2.2%. In addition, the optimized yarn was used as the weft-lining yarn for generating weft-lined fabrics. The elastic recovery rate of the obtained fabric was decreased by only 2.6% after five cyclic stretches, much lower than the control fabric. Our design of anti-fatigue double-wrapped yarns could be widely used for fabricating high-performance compression garments.
弹性纱线是高性能压缩服装的关键组成部分。然而，制造具有高机械力和长伸长率的抗疲劳纱线以生产可长时间穿着的压缩服装仍然是一个挑战。在本文中，我们报告了通过用尼龙长丝以相反捻度包裹高旦氨纶来开发具有优异机械性能的抗疲劳双包纱。特别是，作为芯线的高旦（560 D）氨纶未加捻，这可以最大程度地减少芯线与包裹长丝之间的相互作用，从而使双包纱具有高伸长率。此外，我们选择了拉伸力为3.87±0.09 N的70 D尼龙长丝作为包裹材料，为双包纱提供足够的力。值得注意的是，对内外包裹长丝施加相反的捻度以实现平衡稳定的纱线结构。通过系统地优化制造参数，包括内包裹密度、外包裹密度、卷取比和牵伸比，我们获得了具有优异拉伸应力（32.59±0.82 MPa）和拉伸应变（357.28%±9.10%）的双包纱。值得注意的是，优化纱线的应力衰减率仅为12.0%±2.2%。此外，将优化后的纱线用作纬衬纱来生产纬衬织物。所得织物在五次循环拉伸后弹性回复率仅下降2.6%，远低于对照织物。我们对抗疲劳双包纱的设计可广泛用于制造高性能压缩服装。
