动态力学载荷对超细镀金钼丝力学与电学性能的影响

doi:10.13475/j.fzxb.20210604308

纺织学报 ›› 2022, Vol. 43 ›› Issue (10): 45-52.doi: 10.13475/j.fzxb.20210604308

动态力学载荷对超细镀金钼丝力学与电学性能的影响

李建娜¹^,², 陈玺¹^,², 邵慧奇¹^,²^,³, 邵光伟¹^,²^,³, 蒋金华¹^,²^,³, 陈南梁¹^,²^,³()

1.东华大学产业用纺织品教育部工程研究中心, 上海 201620
2.东华大学纺织学院, 上海 201620
3.东华大学纺织科技创新中心, 上海 201620

收稿日期:2021-06-17 修回日期:2022-05-06 出版日期:2022-10-15 发布日期:2022-10-28
通讯作者: 陈南梁
作者简介:李建娜(1993—),女,博士。主要研究方向为金属基电磁屏蔽用纺织品。
基金资助:
上海市自然科学基金项目(20ZR1401600);上海市自然科学基金项目(20ZR1400600);中央高校基本科研业务费专项资金资助项目(2232020D-09);中央高校基本科研业务费专项资金资助项目(2232020G-06)

Effect of dynamic mechanical load on mechanical and electrical properties of ultra-fine gold coated molybdenum wires

LI Jianna¹^,², CHEN Xi¹^,², SHAO Huiqi¹^,²^,³, SHAO Guangwei¹^,²^,³, JIANG Jinhua¹^,²^,³, CHEN Nanliang¹^,²^,³()

1. Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
2. College of Textiles, Donghua University, Shanghai 201620, China
3. Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China

Received:2021-06-17 Revised:2022-05-06 Published:2022-10-15 Online:2022-10-28
Contact: CHEN Nanliang

摘要/Abstract

摘要：

为探究超细金属纱线在力学循环加载后的弯曲刚度下降和能量耗散行为,对不同结构镀金钼丝纱线进行了50次循环弯曲和200次往复摩擦实验,并对摩擦前后的表观形态、拉伸性能和电学性能进行了比较。基于镀金钼丝纱线的微观形貌和实验结果,结合能量损耗分析方法,研究其在弯曲循环载荷和摩擦往复载荷下的力学及结构响应,定量分析金属丝的可编织性。结果表明:镀金钼丝在循环弯曲和往复摩擦载荷下,微观和宏观结构受到损伤,力学性能下降,接触电阻略有增大;该条件下,双股镀金钼丝刚度和强度下降程度最大,不适合上机织造,单股和三股镀金钼丝动态力学性能稳定,且在动态载荷作用下能保持良好的电学性能,可用做电磁屏蔽织物等功能性材料编织。

关键词: 镀金钼丝, 循环弯曲, 往复摩擦, 可编织性能, 电学性能, 金属纱线

Abstract:

Aiming at the understanding of reduction of bending stiffness and energy dissipation in ultra-fine metal yarns after cyclic loading, yarns made from gold coated molybdenum wires with different structures were studied subject to 50 cycles of bending and 200 cycles of reciprocating friction, followed by the comparison of the morphology, tensile properties and electrical properties. The mechanical and structural responses of the yarns under cyclic bending load and friction reciprocating load were investigated, and the knittability of the yarns from metal wires was quantitatively analyzed. The results show that the micro- and macro-structures of gold coated molybdenum wire are damaged, the mechanical properties are decreased and the contact electrical resistance is slightly increased under the cyclic bending and reciprocating friction loads. The tensile rigidity and strength of double-stranded gold coated molybdenum yarns are greatly decreased under the same conditions, which is not suitable for fabric knitting. The dynamic mechanical properties and electrical properties of mono- and triple-stranded gold-coated molybdenum wires are stable under dynamic load, which can be used as raw materials for knitting electromagnetic shielding fabrics.

Key words: gold coated molybdenum wire, cyclic bending, reciprocating friction, knittability, electrical performance, metallic yarn

中图分类号:

TS181

李建娜, 陈玺, 邵慧奇, 邵光伟, 蒋金华, 陈南梁. 动态力学载荷对超细镀金钼丝力学与电学性能的影响[J]. 纺织学报, 2022, 43(10): 45-52.

LI Jianna, CHEN Xi, SHAO Huiqi, SHAO Guangwei, JIANG Jinhua, CHEN Nanliang. Effect of dynamic mechanical load on mechanical and electrical properties of ultra-fine gold coated molybdenum wires[J]. Journal of Textile Research, 2022, 43(10): 45-52.

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金属丝股数	摩擦前Au 元素占比/%	摩擦后Au 元素占比/%	损耗率/ %
1	92.50	89.49	3.25
2	90.52	78.72	13.04
3	91.17	86.90	4.68

金属丝股数	摩擦前接触电阻/Ω	摩擦后接触电阻/Ω	电阻变化率/%
1	14.43	14.87	3.04
2	10.79	11.37	5.33
3	9.60	10.19	6.21

动态力学载荷对超细镀金钼丝力学与电学性能的影响

Effect of dynamic mechanical load on mechanical and electrical properties of ultra-fine gold coated molybdenum wires

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