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

作　　者：李建娜 陈玺 邵慧奇 邵光伟[1,2,3] 蒋金华 陈南梁[1,2,3] LI Jianna;CHEN Xi;SHAO Huiqi;SHAO Guangwei;JIANG Jinhua;CHEN Nanliang(Engineering Research Center of Technical Textiles,Ministry of Education,Donghua University,Shanghai 201620,China;College of Textiles,Donghua University,Shanghai 201620,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China)

机构地区：[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

出　　处：《纺织学报》2022年第10期45-52,共8页Journal of Textile Research

基　　金：上海市自然科学基金项目(20ZR1401600,20ZR1400600);中央高校基本科研业务费专项资金资助项目(2232020D-09,2232020G-06)。

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。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.

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 

分 类 号：TS181[轻工技术与工程—纺织材料与纺织品设计]