纺织学报 ›› 2019, Vol. 40 ›› Issue (11): 32-37.doi: 10.13475/j.fzxb.20181103806

• 纤维材料 • 上一篇    下一篇

纳米纤维膜基柔性压力传感器的优化设计制备

王杰1,2, 周茗玮1, 汪滨1,2,3(), 李秀艳1   

  1. 1.北京服装学院 材料设计与工程学院, 北京 100029
    2.北京服装学院 服装材料研究开发与评价北京市重点实验室, 北京 100029
    3.北京服装学院 北京市纺织纳米纤维工程技术研究中心, 北京 100029
  • 收稿日期:2018-11-01 修回日期:2019-05-15 出版日期:2019-11-15 发布日期:2019-11-26
  • 通讯作者: 汪滨
  • 作者简介:王杰(1994—),男,硕士生。主要研究方向为纳米纤维膜基柔性传感器。
  • 基金资助:
    国家自然科学基金项目(51503005);国家自然科学基金项目(21274006);北京市自然科学基金项目(2182014);科技北京百名领军人才培养工程项目(Z161100004916168);北京市优秀人才项目(2017000020124G089);北京服装学院高水平教师队伍建设专项资金资助项目(BIFTQG201807)

Optimization design and preparation of nanofiber membrane based flexible pressure sensor

WANG Jie1,2, ZHOU Mingwei1, WANG Bin1,2,3(), LI Xiuyan1   

  1. 1. School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Institute of Fashion Technology,Beijing 100029, China
    3. Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2018-11-01 Revised:2019-05-15 Online:2019-11-15 Published:2019-11-26
  • Contact: WANG Bin

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摘要：

为获得一种灵敏度高、制备工艺简单、轻薄透气的柔性压力传感器,采用静电纺丝热塑性弹性体聚氨酯(TPU)纳米纤维膜为基底和介电层,以碳纳米管导电油墨为电极涂料,通过超声波焊接方式制备三明治结构的纳米纤维膜基柔性压力传感器,并研究其压力传感性能与纳米纤维膜厚度和微观结构之间的关系。结果表明:随着纺丝时间增加,TPU纳米纤维膜厚度增加,拉伸应力增大,断裂伸长率减小;在9.8~49 000 Pa压力范围内,TPU纳米纤维膜基柔性压力传感器灵敏度随纺丝时间增加而减小,当纺丝时间为1 h时,其灵敏度高达4.97 kPa-1,该纳米纤维膜基柔性压力传感器具有灵敏度高、响应范围广的特点。

关键词: 柔性压力传感器, 纳米纤维膜, 静电纺丝, 热塑性弹性体, 聚氨酯

Abstract:

In order to obtain a flexible pressure sensor with high sensitivity, simple preparation process, light weight and air permeability, thermoplastic elastomer polyurethane (TPU) electrospun nanofiber membrane was used as a substrate and a dielectric layer and carbon nanotube conductive ink was used as an electrode coating to prepare a sandwich-structured nanofiber membrane-based flexible pressure sensor by ultrasonic welding. The relationship between pressure sensing properties and nanofiber membrane thickness and microstructure was studied. The results show that with the increasing of spinning time, the thickness and the tensile stress of the nanofiber membrane increase, while the elongation at break decreases. In the pressure range of 9.8-49 000 Pa, the sensitivity of the device decreases with the increase of the spinning time. When the spinning time is 1 h, the sensitivity of the device is up to 4.97 kPa-1. The nanofiber membrane-based flexible pressure sensor has the characteristics of high sensitivity and wide response range.

Key words: flexible pressure sensor, nanofiber membrane, electrospinning, thermoplastic elastomer, polyurethane

中图分类号: 

  • TQ340

图1

柔性压力传感器器件组装示意图"

图2

不同纺丝时间的TPU纳米纤维膜的扫描电镜照片"

图3

不同纺丝时间条件下TPU纳米纤维直径分布图"

图4

不同纺丝时间所得TPU 纳米纤维膜厚度"

图5

TPU纳米纤维膜的应力-应变曲线"

图6

纺丝时间为5 h的TPU纳米纤维膜水接触角"

图7

不同纺丝时间条件下TPU纳米纤维膜为介电层时器件灵敏度随压力的变化趋势"

表1

以不同纺丝时间条件下TPU纳米纤维膜为介电层时器件的灵敏度"

纺丝
时间/h		 灵敏度/kPa-1
第1阶段 第2阶段 第3阶段
1 4.97 0.38 0.03
2 3.58 0.25 0.03
3 1.74 0.14 0.02
4 1.11 0.14 0.01
5 0.69 0.08 0.01
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