三维非织造材料基压阻式传感器的制备与性能  

Preparation and Performance of Piezoresistive Sensors Based on Three-Dimensional Nonwovens

作　　者：李玲 刘庆生[1] 李大伟[1] 李昊轩 邓炳耀[1] LI Ling;LIU Qingsheng;LI Dawei;LI Haoxuan;DENG Bingyao(Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《服装学报》2023年第6期502-507,520,共7页Journal of Clothing Research

基　　金：中国纺织工业联合会应用基础研究项目(J202008);宿迁市产业前瞻与共性关键技术项目(H202212)。

摘　　要：以聚乙酸乙烯酯(PVAc)为分散剂和黏合剂,将碳纳米管(CNT)均匀地分散在乙酸乙酯溶剂中,制得CNT分散液,同时对三维气流成网非织造材料(NW)进行处理,制得三维非织造材料基压阻式传感器(NW-PVAc-CNT);对NW-PVAc-CNT压阻式传感器的传感性能、透气性能以及潜在应用进行探讨。研究表明:该传感器在0~100 kPa工作范围内的灵敏度为1.07714,电流-电压曲线呈线性关系,并且在不同水平外力压缩-释放下的电流响应都具有良好的重复性,在200次的压缩-释放循环中的稳定性良好;NW-PVAc-CNT孔隙率为97.40%,透气率高达2970 mm/s;该传感器对手指按压、手指和手腕弯曲活动均能够响应,并可监测人体活动,在智能服装方面具有良好的应用价值。Using polyvinyl acetate(PVAc)as dispersant and binder,carbon nanotubes(CNT)were uniformly dispersed in ethyl acetate solvent to prepare the CNT dispersion.Three-dimensional(3D)air-laid nonwovens(NW)was treated with the CNT dispersion and thus 3D nonwovens-based piezoresistive sensor(NW-PVAc-CNT)was prepared.The sensing performance,air permeability and potential application of the NW-PVAc-CNT piezoresistive sensor were discussed.The results show that the sensitivity of the sensor is 1.07714 in the sensing range of 0~100 kPa and the current-voltage curves shows a linear relationship.The current response under different levels of external compression-release is well repeatable,and the stability is good in 200 compression-release cycles.In addition,the porosity of NW-PVAc-CNT is 97.40%,and the air permeability is as high as 2970 mm/s.The sensor can monitor human activities,responding to finger pressing,finger bending and wrist bending,which has good application value in smart clothing.

关 键 词：三维气流成网非织造材料 聚乙酸乙烯酯 碳纳米管 压阻式传感器 透气 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]