纺织学报 ›› 2021, Vol. 42 ›› Issue (08): 64-70.doi: 10.13475/j.fzxb.20201008507

• 纺织工程 • 上一篇    下一篇

长丝喂入位置对赛络纺包芯纱结构与性能影响

吴佳庆1, 王迎1(), 郝新敏2, 宫玉梅1, 郭亚飞2   

  1. 1.大连工业大学 纺织与材料工程学院, 辽宁 大连 116034
    2.军事科学院系统工程研究院 军需工程技术研究所, 北京 100010
  • 收稿日期:2020-10-30 修回日期:2021-04-30 出版日期:2021-08-15 发布日期:2021-08-24
  • 通讯作者: 王迎
  • 作者简介:吴佳庆(1994—),男,硕士生。主要研究方向为新型纺织技术。
  • 基金资助:
    辽宁省科学技术项目工业重大专项(2019JH1/10100010);国家自然科学基金项目(U1808211);北京市科技计划项目(Z181100004118001)

Effect of filament feeding positions on structure and properties of siro-spinning core-spun yarns

WU Jiaqing1, WANG Ying1(), HAO Xinmin2, GONG Yumei1, GUO Yafei2   

  1. 1. School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China
    2. Institute of Quartermaster Engineering & Technology, Systems Engineering Institute, Academy of Military Sciences, Beijing 100010, China
  • Received:2020-10-30 Revised:2021-04-30 Published:2021-08-15 Online:2021-08-24
  • Contact: WANG Ying

摘要:

针对赛络纺包芯纱纺制过程中,长丝不同喂入位置对纱线结构和性能的影响,分别纺制了涤纶长丝在左侧粗纱须条中心、两粗纱须条中间、右侧粗纱须条中心3种结构的短纤/长丝赛络纺包芯纱。对比分析了纱线截面、成纱质量、耐磨性能、拉伸断裂过程和纱线退捻特征。结果表明:3种包芯纱中涤纶长丝均在纱线中心附近,无明显漏丝,条干均匀,毛羽较少;左侧粗纱须条中心喂入纱线拉伸断裂曲线有多峰特征,两粗纱中间喂入纱线拉伸断裂曲线有密集波动特征;右侧粗纱须条中心喂入纱线初始弹性模量最高,拉伸断裂特征为阶梯性断裂,退捻最困难,且在退捻过程中部分纱段被反向加捻,纱线结构最稳定,耐磨性好,纱线强力最高。

关键词: 赛络纺包芯纱, 长丝喂入位置, 纱线断裂特征, 退捻, 纱线质量

Abstract:

To investigate the influence of different filament feeding positions on core-spun yarn performance in siro-spinning, three types of core-spun yarns were spun. Polyester filaments in the spinning process were fed in the center of left roving filament, in the center of two roving filament and in the center of right roving filament, respectively. The cross-section, quality, abrasion resistance, tensile fracture and untwisting characteristics of the prepared core-spun yarns were compared and analyzed. The results show that there are no obvious phenomena of filaments out of yarn surface for all the core-spun yarns, and the inner polyester filament was near the center of the yarn. The yarns were clean and even with less hairiness. For the yarn fed in the left roving center, the tensile fracture of yarn was characterized by multi-peak fracture. For the yarn fed in the two roving center, the tensile fracture of yarn was characterized by dense fluctuation. While for the yarn fed in the center of right roving, its tensile fracture characteristic was in the form of ladder shape. Among the yarns, the initial elastic modulus of the yarn fed in the center of right roving was the highest and the untwisting of this yarn was the most difficult, and during the unwinding process of the yarn, some yarn segments were reversely twisted, which showed a more stable yarn structure and thus provided a good abrasion resistance and the highest yarn strength.

Key words: siro-spinning core-spun yarn, filament feeding position, yarn fracture characteristic, untwisting of yarn, yarn quality

中图分类号: 

  • TS104.1

图1

赛络纺包芯纱粗纱和长丝喂入位置"

表1

赛络纺包芯纱实验方案"

纱线编号 实验方案
YA 涤纶长丝在白色棉粗纱1中心由导丝轮6从L点喂入
YB 涤纶长丝在粗纱1和粗纱2二者的中间由导丝轮6从M点喂入
YC 涤纶长丝在黑色涤纶粗纱2中心由导丝轮6从R点喂入

图2

3种赛络纺包芯纱纱线截面(×200)"

图3

赛络纺包芯纱加捻三角区 1、2—粗纱须条;L—长丝左喂入点;R—长丝右喂入点; O、O'—汇聚点;Ⅰ—无捻区;Ⅱ—弱捻区;Ⅲ—复合区。"

表2

3种赛络纺包芯纱成纱性能指标"

纱线编号 纱线线密
度/tex
初始弹性模量/
(cN·tex-1)
断裂强度/
(cN·tex-1)
断裂伸长
率/%
断裂功/
mJ
条干CV
值/%
毛羽
H
平均摩擦
次数
YA 65.11 92.26 12.62 10.83 101 12.46 3.68 208
YB 65.13 86.02 13.04 12.27 119 11.99 4.13 298
YC 65.13 100.77 13.08 11.85 121 11.79 4.05 302

图4

200次往复摩擦后YA、YC包芯纱外观形貌"

图5

3种包芯纱的拉伸断裂曲线"

图6

包芯纱YC断裂前后的外观形貌"

图7

YC纱线拉伸断裂过程中不同位置的扫描电镜照片"

图8

3种包芯纱解捻后形貌"

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