棉/不锈钢丝包芯纱针织电路制备及其导电稳定性能  

Preparation and conductive stability of knitted circuit using cotton/stainless steel wire core-spun yarn

作　　者：王开 王瑾 牛丽 陈超余 马丕波 WANG Kai;WANG Jin;NIU Li;CHEN Chaoyu;MA Pibo(Engineering Research Center for Knitting Technology,Ministry of Education,Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]江南大学针织技术教育部工程研究中心,江苏无锡214122

出　　处：《纺织学报》2023年第7期64-71,共8页Journal of Textile Research

基　　金：江苏省自然科学基金项目(BK20221094);中国博士后科学基金项目(2022TQ0123)。

摘　　要：为提高金属丝作为电路用导线的柔性及导电稳定性,将赛络纺技术与针织技术结合,制备了基于针织结构的柔性电路。通过探究不同纺纱参数及针织工艺的影响,对纱线强度、包覆性、柔性针织电路的电学与力学性能及导电稳定性进行了表征和分析。结果表明:以不锈钢丝为导电芯层、棉为绝缘外层制成的导电包芯纱,纱线强力与纱线细度呈正相关,强力相较于裸不锈钢丝可提升2倍,且编织性能优异;在针织电路中添加弹性锦纶/氨纶包覆纱以增强其在二维及三维平面的弹性回复性,证明所制备的针织电路均具有良好的导电稳定性;当三维曲面平均应变达到150%时,针织电路电阻变化率低于0.38%,且在20%应变下纵向循环拉伸5000个周期,电阻变化率低于0.61%。通过导电包芯纱所制备的柔性针织电路可同时具备良好的拉伸回复性及导电稳定性,为全柔性智能可穿戴传感网络的建立提供了新思路。Objective The development of intelligent wearable products has put forward new requirements for conductive circuit,in which high flexibility and outstanding adaptation to the human body are essential.Flexible textile circuit made with metal wire guarantees reliable electric conduction,but faces challenges in processibility,wearing comfort,safety and conductive stability.The purpose of this paper is to improve the flexibility and stability of textile circuit made from cotton/metal wire core yarns to establish a flexible wearable sensing network.Method This paper proposed a flexible circuit based on knitting structure that integrates sirospun technology with knitting technology.By exploring different spinning parameters including stainless steel wire diameter,twist factor and draft ratio,siro core-spun yarns were prepared from stainless steel wire and cotton.The non-conductive part of flexible knitted circuit was fabricated with polyamide/spandex yarn as plating yarn and polyester yarn as ground yarn.The conductive part was integrated by intarsia knit with polyamide/spandex yarn as plating yarn and conductive core-spun yarn as ground yarn.Then,mechanical properties,electrical stability under various mechanical conditions and conductive durability of flexible knitting circuit were characterized and analyzed.Results The yarn used stainless steel wire as core and cotton fibers as the sheath(Fig.3).Research on spinning parameters showed that increase in stainless steel wire diameter,reduction in draft ratio and proper twist factor have positive effects to conductive core-spun yarn appearance(Tab.3).Considering the exposed core length and strength of the yarn,the twist factor of 400,the draft ratio of 17.28 and the stainless steel wire diameter of 0.05 mm were selected as the final spinning parameters.The break strength of the prepared conductive core-spun yarn is about 7.6 times that of bare stainless steel wire,but the elongation at break decreases about 2.8-3.6 times(Fig.4).It was confirmed that the resistance of the

关 键 词：棉 不锈钢丝 赛络纺技术 嵌花组织 包芯纱 柔性针织电路 导电稳定性 

分 类 号：TS186.9[轻工技术与工程—纺织材料与纺织品设计]