复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (10): 56-62.DOI: 10.19936/j.cnki.2096-8000.20221028.009

• 应用研究 • 上一篇    下一篇

碳化蚕丝织物/PDMS/Fe3O4复合柔性应变/磁双模式传感器的制备与性能研究

贡永青1,2, 刘玉慧1,2, 闫蕾1,2, 赵雪1,2, 吴琪琳1,2*   

  1. 1.东华大学 纤维材料改性国家重点实验室,上海201620;
    2.东华大学 材料科学与工程学院,上海201620
  • 收稿日期:2021-11-02 出版日期:2022-10-28 发布日期:2022-11-01
  • 通讯作者: 吴琪琳(1970-),女,博士,研究员,主要从事碳材料方面的研究,wql@dhu.edu.cn。
  • 作者简介:贡永青(1997-),男,硕士研究生,主要从事碳基柔性传感器方面的研究。
  • 基金资助:
    国家自然科学基金重大项目(52090033/52090030)

Preparation and performance study of carbonized silk/PDMS/Fe3O4 composite flexible strain/magnetic dual-mode sensors

GONG Yong-qing1,2, LIU Yu-hui1,2, YAN Lei1,2, ZHAO Xue1,2, WU Qi-lin1,2*   

  1. 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;
    2. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
  • Received:2021-11-02 Online:2022-10-28 Published:2022-11-01

摘要: 本文以双绉丝绸为原料,通过高温热处理得到具有导电性的碳化蚕丝布,并与聚二甲基硅氧烷(PDMS)弹性体和Fe3O4纳米颗粒复合,制备了一种柔性应变/磁双模式传感器。该传感器应变范围为0%~60%,表现出可拉伸性,其应变灵敏度(GF)最高为9.49,并且在200多次拉伸/回复过程中具有良好的稳定性。Fe3O4的添加赋予了传感器对50 mT以下小磁场的响应,当Fe3O4的添加量为25wt%时,其磁场灵敏度(GFm)可达39.73%/T。该传感器能够准确地监测手指弯曲和磁场大小,实现了双模式传感。最终成功制备了一种非接触式的磁电开关,实现了可视化的磁场检测。

关键词: 蚕丝, 碳化织物, 应变传感, 磁性传感, 双模式传感器, 复合材料

Abstract: The high electrical conductivity carbonized silk fabrics were prepared by using crepe de chine silk as raw materials under high temperature heat treatment, and were combined with polydimethylsiloxane (PDMS) elastomer and Fe3O4 nanoparticles to prepare a flexible magnetic/strain dual-mode sensor. The sensors exhibited stretchability in a strain range of 0%~60%, with a maximum strain sensitivity (GF) of 9.49, and good stability over 200 stretching/recovery process. The addition of Fe3O4endowed the sensor with a response to a small magnetic field below 50 mT. When the addition of Fe3O4was 25wt%, its magnetic field sensitivity (GFm) could reach to 39.73%/T. The sensor could accurately monitor finger bending and magnetic field, realizing dual-mode sensing. Finally, a non-contact magneto-electrical switch was successfully prepared, making the visual magnetic field detection possible.

Key words: silk, carbonized fabric, strain sensing, magnetic sensing, dual-mode sensor, composites

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