基于镀银锦纶/锦纶/水性聚氨酯复合纱的一维结构柔性电容传感器  

One-dimensional structured flexible capacitive sensors based on silver coated polyamide fiber/polyamide fiber/waterborne polyurethane composite yarns

作　　者：岳欣琰 邵剑波 王小虎 韩潇[1,2] 赵晓曼 洪剑寒 YUE Xinyan;SHAO Jianbo;WANG Xiaohu;HAN Xiao;ZHAO Xiaoman;HONG Jianhan(School of Textile Science and Engineering,Shaoxing University,Shaoxing,Zhejiang 312000,China;Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province,Shaoxing,Zhejiang 312000,China;Zhejiang Jieda New Material Technology Co.,Ltd.,Shaoxing,Zhejiang 312000,China)

机构地区：[1]绍兴文理学院纺织科学与工程学院,浙江绍兴312000 [2]浙江省清洁染整技术研究重点实验室,浙江绍兴312000 [3]浙江洁达新材料科技有限公司,浙江绍兴312000

出　　处：《纺织学报》2025年第3期82-89,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52300167);浙江省自然科学基金探索公益项目(LTGY24E030001);国家级大学生创新创业训练计划项目(202310349025)。

摘　　要：为制备新型电容式柔性传感器,在镀银锦纶(SCN)芯纱表面包覆锦纶拉伸变形丝(PA),并对其浸渍水性聚氨酯(WPU)得到SCN/PA/WPU复合纱,然后利用复合纱设计制备了一维结构电容式柔性传感器。对SCN芯纱、SCN/PA包覆纱、SCN/PA/WPU复合纱进行形貌观察、力学性能测试,分析传感器的应变传感性能,并应用于人体生理活动的监测。结果表明:SCN/PA/WPU复合纱和SCN/PA包覆纱的力学性能较SCN芯纱有明显提升;传感器表现出良好的应变-电容传感性能,具有0%~140%的工作响应范围;在10%的拉伸应变下,其灵敏度系数为0.66,且重复性良好,能够承受1200次以上的拉伸-卸载循环,可用于人体运动与生理活动的实时监控。Objective Wearable flexible sensors have become an important part of smart textiles,and flexible capacitive wearable sensors continue to develop in the direction of flexibility,miniaturization,portability and flexibility.In order to develop new flexible capacitive sensors and promote the continuous production of wearable flexible sensors,low-cost and high-efficiency preparation processes have received attention of researchers.Method Silver coated nylon(SCN)as core yarn and nylon DTY(PA)as outer wrapper were selected to produce SCN/PA wrapped yarn through the automated wrapping yarn production process.The SCN/PA wrapped yarns were obtained by double-layer reverse twisting method,the inner yarns were twisted with S-twist and the outer winding yarns were twisted with Z-twist,with a twist rate of 1000 t/m under the process parameters.The SCN/PA wrapped yarn was impregnated with waterborne polyurethane(WPU)to obtain the SCN/PA/WPU composite yarn,and then the composite yarn was adopted to design and prepare a one-dimensional structured flexible capacitive sensor.The SCN core yarn,SCN/PA wrapped yarn,and SCN/PA/WPU composite yarn were subjected to morphological observation,mechanical property tests,and the strain sensing properties of the sensors were investigated and practically applied to the monitoring of human activities.Results The mechanical properties of both SCN/PA/WPU composite yarn and SCN/PA wrapped yarn were significantly improved compared with SCN core yarn.The design of one-dimensional flexible capacitive sensors using SCN/PA/WPU composite yarns by spiral winding method showed good tensile strain-capacitance sensing performance.The sensor has an operating response range of 0-140%.As the tensile strain was increased sequentially,the capacitance value of the sensor got decreased,and when the strain was small,the sensor exhibited good linearity and sensitivity factor.When the strain continued to increase,the sensor linearity and gauge factor began to weaken.At 10%of the tensile strain,its gauge factor was 0.6

关 键 词：镀银锦纶 锦纶 包覆纱 一维结构 电容式传感器 人体运动监测 水性聚氨酯 

分 类 号：TS104[轻工技术与工程—纺织工程]