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CNT包覆三维聚乙烯-聚丙烯(ES)/PET非织造基柔性压力传感器的制备及性能

高星 张蕊 应迪 郑莹莹 王建 邹专勇

高星, 张蕊, 应迪, 等. CNT包覆三维聚乙烯-聚丙烯(ES)/PET非织造基柔性压力传感器的制备及性能[J]. 复合材料学报, 2024, 42(0): 1-10.
引用本文: 高星, 张蕊, 应迪, 等. CNT包覆三维聚乙烯-聚丙烯(ES)/PET非织造基柔性压力传感器的制备及性能[J]. 复合材料学报, 2024, 42(0): 1-10.
GAO Xing, ZHANG Rui, YING Di, et al. Preparation and performance of CNT impregnating 3D Ethylene-Propylene Side By Side (ES)/PET nonwoven-based flexible pressure sensors[J]. Acta Materiae Compositae Sinica.
Citation: GAO Xing, ZHANG Rui, YING Di, et al. Preparation and performance of CNT impregnating 3D Ethylene-Propylene Side By Side (ES)/PET nonwoven-based flexible pressure sensors[J]. Acta Materiae Compositae Sinica.

CNT包覆三维聚乙烯-聚丙烯(ES)/PET非织造基柔性压力传感器的制备及性能

基金项目: 浙江省教育厅一般科研项目(Y202351466);国家级大学生创新创业训练计划(202310349047)
详细信息
    通讯作者:

    王建,博士,讲师,硕士生导师,研究方向为纤维新材料及柔性智能可穿戴纺织品 E-mail: jwang@usx.edu.cn

  • 中图分类号: TB332

Preparation and performance of CNT impregnating 3D Ethylene-Propylene Side By Side (ES)/PET nonwoven-based flexible pressure sensors

Funds: General Scientific Research Project of Zhejiang Education Department (No.Y202351466); National Training Program of Innovation and Entrepreneurship for Undergraduates (No. 202310349047)
  • 摘要: 为克服柔性传感器在灵敏度较低、生产流程复杂以及透气性不足等方面的挑战,本研究通过针刺-热熔技术制备了一种三维聚乙烯-聚丙烯(Ethylene-Propylene Side By Side,ES)/聚酯(PET)纤维非织造材料。随后,利用碳纳米管(CNT)对该材料进行浸渍处理,成功开发了一种性能优异的CNT包覆三维ES/PET非织造基压力传感器,并对比分析了不同CNT浸渍时间和浸渍次数对传感器性能的影响。研究结果显示,该CNT包覆三维ES/PET非织造基柔性压力传感器具有高达0.375 kPa−1的灵敏度和0-214.53 kPa的检测范围。经过2100次压缩循环,传感器展现了优异的稳定性和可重复性,响应时间为48 ms,恢复时间为122 ms。在实际应用中,该传感器能够精确识别如呼吸、吞咽、手指弯曲等人体细微生理活动,在运动、医疗、虚拟现实等多个领域具有潜在的广泛应用。

     

  • 图  1  3 D ES/PET非织造基布制备流程图

    Figure  1.  Flow chart of 3 D ES/PET nonwoven fabric preparation

    图  2  CNT包覆三维ES/PET非织造基压力传感器制备流程图

    Figure  2.  Preparation flow chart of CNT impregnating 3 D ES/PET nonwoven-based pressure sensor

    图  3  三维ES/PET非织造布实物图: (a)浸渍CNT前后非织造布实物图; (b) CNT包覆三维ES/PET非织造布厚度; (c)弯曲状态; (d)挤压状态

    Figure  3.  3 D ES/PET nonwoven physical picture: (a) Physical drawings of the fabric before and after CNT impregnation; (b) Thickness of CNT impregnating 3 D ES/PET nonwoven; (c) Bending; (d) Extrusion

    图  4  非织造材料在CNT溶液中浸渍不同时间的SEM图; ((a1)~(a3))未经过浸渍处理; ((b1)~(b3))浸渍5分钟; ((c1)~(c3))浸渍10分钟; ((d1)~(d3))浸渍15分钟

    Figure  4.  SEM images of nonwoven materials immersed in CNT solution for different durations; ((a1)~(a3)) untreated; ((b1)~(b3)) immersed for 5 minutes; ((c1)~(c3)) immersed for 10 minutes; ((d1)~(d3)) immersed for 15 minutes

    图  5  非织造材料在CNT溶液中浸渍不同次数的SEM图; ((a1)~(a3))浸渍15分钟 1次; ((b1)~(b3))浸渍15分钟 2次; ((c1)~(c3))浸渍15分钟 3次; ((d1)~(d3))浸渍15分钟 4次

    Figure  5.  SEM images of nonwoven materials immersed in CNT solution for different numbers of cycles; ((a1)~(a3)) immersed for 15 minutes, one cycle; ((b1)~(b3)) immersed for 15 minutes, two cycle; ((c1)~(c3)) immersed for 15 minutes, three cycle; ((d1)~(d3)) immersed for 15 minutes, four cycle

    图  6  CNT浸渍不同时间所制备出三维ES/PET非织造基压力传感器的相对电阻变化曲线

    Figure  6.  The relative resistance change curve of the CNT impregnating 3 D ES/PET nonwoven-based pressure sensor prepared by immersing CNT for different durations.

    图  7  CNT浸渍15分钟所制备三维ES/PET非织造基压力传感器的灵敏度曲线图

    Figure  7.  The sensitivity curve of the CNT impregnating 3 D ES/PET nonwoven-based pressure sensor prepared by immersing CNT for 15 minutes.

    图  8  CNT浸渍15分钟 不同循环次数所制备出三维ES/PET非织造基压力传感器的相对电阻变化曲线

    Figure  8.  The relative resistance change curve of CNT impregnating 3 D ES/PET nonwoven-based pressure sensor prepared with CNT immersion for 15 minutes at different cycle numbers.

    图  9  经过三次循环CNT浸渍15分钟处理的三维ES/PET非织造基压力传感器灵敏度曲线图

    Figure  9.  The sensitivity curve of the CNT impregnating 3 D ES/PET nonwoven-based pressure sensor prepared with CNT immersion for 15 minutes at 3 cycle numbers.

    图  10  三维ES/PET非织造基压力传感器的响应和恢复时间曲线图: (a)响应时间; (b)恢复时间

    Figure  10.  Response and recovery time curves of the CNT impregnating 3 D ES/PET nonwoven-based pressure sensor: (a) Response time;(b) Relaxation time

    图  11  三维ES/PET非织造基压力传感器经过2100次压力循环耐久性实验

    Figure  11.  Durability test of the CNT impregnating 3D ES/PET nonwoven-based pressure sensor after 2100 pressure cycles

    图  12  三维ES/PET非织造基压力传感器的机制图

    Figure  12.  Mechanism diagram of CNT impregnating 3 D ES/PET nonwoven-based pressure sensor

    图  13  三维ES/PET非织造基压力传感器在关节弯曲状态下的应用性测试: (a)手指弯曲; (b)膝盖弯曲; (c)握拳; (d)手腕弯曲; (e)手肘弯曲

    Figure  13.  Application test of CNT impregnating 3 D ES/PET nonwoven-basedpressure sensor in joint curvature: (a) Curved fingers; (b) Knee bending;(c) Clench fist; (d) Wrist bending; (e) Elbow bending

    图  14  三维ES/PET非织造基压力传感器在生活常见活动监测中的应用: (a)不同频率手指点击; (b)不同力度手指点击; (c)吞咽; (d)不同频率鼠标点击; (e)摩斯密码; (f)呼吸监测

    Figure  14.  Application of CNT impregnating 3 D ES/PET nonwoven-based pressure sensor in the monitoring of common activities of life: (a) Finger clicks of different frequencies; (b) Finger clicks of varying intensity; (c) Swallowing; (d) different frequency of mouse clicks; (e) Morse Code; (f) Respiratory monitoring

    表  1  三维ES/PET非织造布性能测试

    Table  1.   Performance testing of 3 D ES/PET nonwovens

    Performances Thicknesses/mm Surface density/
    (g/100 cm2)
    Permeability/
    (mm·s−1)
    Breaking
    strength/N
    Elongation
    at break/%
    Breaking strength/
    (cN·cm−2)
    1# 5.63 2.32 1990 53.50 103.20 1.07
    2# 5.69 2.61 2380 63.30 116.50 1.27
    3# 5.62 2.56 2210 70.00 113.90 1.40
    Average value 5.65 2.50 2193.33 62.27 111.20 1.25
    下载: 导出CSV

    表  2  柔性压阻传感器性能对比表

    Table  2.   Performance comparison table of flexible piezoresistive sensors

    Electrode Type Structure Sensitivity/kPa−1 Detect Range/kPa Response time/
    ms
    Ref
    Silver nanowires Piezoresistive 3 D porous microstructured 0.014 0-100 64 [27]
    Expandable graphite Piezoresistive Planar structure 0.15 0.1-110 - [28]
    Reduced graphene oxide Piezoresistive Polyurethane foam 0.17 0-25 300 [29]
    Reduced graphene oxide Piezoresistive 3 D porous microstructured 0.009 0-180 13 [30]
    Reduced graphene oxide Piezoresistive Polyurethane sponge 0.13 0-30 - [31]
    CNT Piezoresistive 3 D nonwoven 5.57% 0-131.32 105 [32]
    CNT Piezoresistive 3 D ES/PET
    network structure
    0.375 0-214.5 48 This work
    下载: 导出CSV
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  • 收稿日期:  2024-04-29
  • 修回日期:  2024-06-12
  • 录用日期:  2024-06-13
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