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柔性可拉伸硅橡胶@多壁碳纳米管/硅橡胶可穿戴应变传感纤维

魏阿静 李运涛 马忠雷

魏阿静, 李运涛, 马忠雷. 柔性可拉伸硅橡胶@多壁碳纳米管/硅橡胶可穿戴应变传感纤维[J]. 复合材料学报, 2020, 37(8): 2045-2054 doi:  10.13801/j.cnki.fhclxb.20200103.002
引用本文: 魏阿静, 李运涛, 马忠雷. 柔性可拉伸硅橡胶@多壁碳纳米管/硅橡胶可穿戴应变传感纤维[J]. 复合材料学报, 2020, 37(8): 2045-2054 doi:  10.13801/j.cnki.fhclxb.20200103.002
Ajing WEI, Yuntao LI, Zhonglei MA. Flexible stretchable and highly sensitive silicone rubber@multiwalled carbon nanotubes/silicone rubber wearable strain sensing fibers[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 2045-2054. doi: 10.13801/j.cnki.fhclxb.20200103.002
Citation: Ajing WEI, Yuntao LI, Zhonglei MA. Flexible stretchable and highly sensitive silicone rubber@multiwalled carbon nanotubes/silicone rubber wearable strain sensing fibers[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 2045-2054. doi: 10.13801/j.cnki.fhclxb.20200103.002

柔性可拉伸硅橡胶@多壁碳纳米管/硅橡胶可穿戴应变传感纤维

doi: 10.13801/j.cnki.fhclxb.20200103.002
基金项目: 国家自然科学基金(51903145);陕西省科学技术厅自然科学基础研究计划(2018JQ5060);陕西省教育厅专项科研计划项目(17JK0100);陕西科技大学科研启动基金(2016GBJ-08)
详细信息
    通讯作者:

    李运涛,硕士,教授,硕士生导师,研究方向为纳米材料的表面及界面 E-mail:liyt@sust.edu.cn

    马忠雷,博士,副教授,硕士生导师,研究方向为功能性聚合物基复合材料及发泡材料 E-mail: mazl@sust.edu.cn

  • 中图分类号: TB332

Flexible stretchable and highly sensitive silicone rubber@multiwalled carbon nanotubes/silicone rubber wearable strain sensing fibers

  • 摘要: 基于核-壳结构设计,采用简便、低成本的浸涂-固化法制得柔性、可拉伸、高灵敏且稳定的聚二甲基硅氧烷硅橡胶@多壁碳纳米管/聚二甲基硅氧烷硅橡胶(PDMS@MWCNTs/PDMS)压阻式应变传感纤维。通过FTIR、XRD、TG、TEM对硅烷偶联剂改性多壁碳纳米管(MWCNTs-KH570)的化学结构、热稳定性和微观形貌进行了分析,深入研究了核-壳结构与MWCNTs-KH570质量分数对PDMS@MWCNTs/PDMS复合纤维导电性能、传感性能及力学性能的影响规律与机制。结果表明:羟基化MWCNTs(MWCNTs—OH)表面接枝KH570使其在壳层PDMS基体中具有良好的分散性和界面相互作用;核-壳结构的设计使PDMS@MWCNTs/PDMS复合纤维在低填充下具有高电导率和传感性能;PDMS@MWCNTs/PDMS复合纤维的导电性能与传感性能随着MWCNTs-KH570质量分数增加而提高,且在人体关节运动监测中表现出良好的可重复性和工作稳定性。
  • 图  1  核-壳结构聚二甲基硅氧烷硅橡胶@多壁碳纳米管/聚二甲基硅氧烷硅橡胶(PDMS@MWCNTs/PDMS)复合纤维的制备示意图

    Figure  1.  Schematic illustration for fabrication of polydimethylsiloxane silicone rubber@multiwalled carbon nanotubes/polydimethylsiloxane silicone rubber(PDMS@MWCNTs/PDMS) composite fibers with a core-shell structure

    图  2  羟基化MWCNTs(MWCNTs—OH)和硅烷偶联剂改性MWCNTs(MWCNTs-KH570)的FTIR图谱(a)、TG曲线(b)和XRD图谱(c)

    Figure  2.  FTIR patterns(a), TG curves(b), XRD pattern(c) of hydroxylation MWCNTs(MWCNTs—OH) and silane coupling agent modified MWCNTs(MWCNTs-KH570)

    图  3  MWCNTs-KH570的微观形貌及MWCNTs—OH与MWCNTs-KH570的分散性

    Figure  3.  Micromorphology of MWCNTs-KH570 and dispersibility of MWCNTs—OH and MWCNTs-KH570

    图  4  复合纤维的光学显微镜图像与横断面SEM图像

    Figure  4.  Optical photographs and transverse section SEM images of the composite fibers ((a), (a') MWCNTs—OH/PDMS composite fibers; (b), (b') MWCNTs-KH570/PDMS composite fibers; (c), (c'), (c''), (c''') MWCNTs-KH570/PDMS composite fibers with a core-shell structure

    图  5  MWCNTs-KH570质量分数对PDMS@MWCNTs/PDMS复合纤维拉伸强度和断裂伸长率的影响

    Figure  5.  Effect of MWCNTs-KH570 mass fraction on the tensile strength and elongation at break of PDMS@MWCNTs/PDMS composite fibers

    图  6  PDMS@MWCNTs/PDMS复合纤维的导电性能

    Figure  6.  Electrical conductivities of PDMS@MWCNTs/PDMS composite fibers

    图  7  PDMS@MWCNTs/PDMS复合纤维的压阻特性和传感性能

    Figure  7.  Piezoresistive behaviors and sensing properties of PDMS@MWCNTs/PDMS composite fibers

    图  8  PDMS@MWCNTs/PDMS复合纤维的应变传感机制

    Figure  8.  Strain sensing mechanism for PDMS@MWCNTs/PDMS composite fibers

    图  9  PDMS@MWCNTs/PDMS复合纤维在LED灯照明和人体运动监测中的应用

    Figure  9.  Applications of PDMS@MWCNTs/PDMS composite fibers in LED lighting and human motion detection

    表  1  聚二甲基硅氧烷(PDMS)的配方

    Table  1.   Formula of poly (dimethylsiloxane) (PDMS)

    ComponentAB
    Designation Poly (dimethyl-methyl vinyl siloxane) Poly (dimethyl-methylhydro siloxane), Pt catalyst
    Mass ratio mAmB=10∶1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-10-10
  • 录用日期:  2019-11-30
  • 网络出版日期:  2020-01-03
  • 刊出日期:  2020-08-31

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