新型三明治结构聚二甲基硅氧烷/聚偏氟乙烯-纳米Ag线/聚二甲基硅氧烷柔性应变传感器的制备与性能

张明艳; 杨振华; 吴子剑; 王登辉; 刘居; 杨镕琛

doi:10.13801/j.cnki.fhclxb.20190923.001

新型三明治结构聚二甲基硅氧烷/聚偏氟乙烯-纳米Ag线/聚二甲基硅氧烷柔性应变传感器的制备与性能

doi: 10.13801/j.cnki.fhclxb.20190923.001

张明艳^{1, 2},
杨振华²,
吴子剑^{1, 2, ,},
王登辉²,
刘居²,
杨镕琛²

1.
哈尔滨理工大学　工程电介质及其应用教育部重点实验室，哈尔滨 150040
2.
哈尔滨理工大学　材料科学与工程学院，哈尔滨 150040

基金项目: 工程电介质及应用教育部重点实验室2017年前沿项目预研基金（2018EDAQY05）；黑龙江省普通本科高等学校青年创新人才培养计划（UNPYSCT-2018214）；哈尔滨市科技创新人才（2017RAQXJ105）

详细信息

通讯作者:
吴子剑，博士，讲师，研究方向为树脂基复合材料、柔性应变传感器　E-mail：zijian.wu@hrbust.edu.cn

中图分类号: TB3383.1
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- 被引次数: 0
出版历程
- 收稿日期: 2019-06-06
- 录用日期: 2019-09-20
- 网络出版日期: 2019-09-23
- 刊出日期: 2020-05-15

Preparation and properties of a novel sandwich structure polydimethylsiloxane/polyvinylidene fluoride-Ag nanowires/polydimethylsiloxane flexible strain sensor

1.
Key Laboratory of Engineering Dielectric and Its Application Technology of Ministry of Education, Harbin University of Science and Technology, Harbin 150040, China
2.
Department of Material Science and Technology, Harbin University of Science and Technology, Harbin 150040, China

摘要

摘要: 为了提升柔性应变传感器性能，采用静电纺丝技术制备聚偏氟乙烯(PVDF)静电纺丝膜后，将自制纳米Ag线(AgNWs)抽滤在PVDF静电纺丝膜表面，作为导电层。采用聚二甲基硅氧烷(PDMS)对导电层进行双面固化，制备了系列导电层中不同AgNWs含量的新型三明治结构的PDMS/PVDF-AgNWs/PDMS柔性应变传感器，并对其性能进行表征和分析。结果表明，静电纺丝膜的引入明显改善了PDMS/PVDF-AgNWs/PDMS柔性应变传感器的各项性能，减少了滞后现象，增加了传感器的灵敏度和可重复性，并大幅提升了使用寿命。当导电层中AgNWs质量为 0.030 g，应变达到10%时，PDMS/PVDF-AgNWs/PDMS柔性应变传感器灵敏度的传感系数可达143.85。对PDMS/PVDF-AgNWs/PDMS柔性应变传感器进行30天可重复试验后，在设定位移为5 mm、每天拉伸20次的条件下，PDMS/PVDF-AgNWs/PDMS柔性应变传感器的初始电阻值仅比初次试验时增加了约2 Ω，较最大位移时的电阻值可忽略不计。
- Ag纳米线 /
- 聚偏氟乙烯 /
- 静电纺丝 /
- 柔性应变传感器 /
- 灵敏度
Abstract: In order to improve the performance of the flexible strain sensor, the polyvinylidene fluoride (PVDF) electrospinning film was prepared by electrospinning, and the self-made Ag nanowires (AgNWs) were suction filtered on the surface of the PVDF electrospinning film as a conductive layer. A multi-layer sandwich polydimethylsiloxane (PDMS)/PVDF-AgNWs/PDMS flexible strain sensor with different content of AgNWs in a series of conductive layers was prepared by using PDMS to cure the conductive layer on both sides. The performance of the PDMS/PVDF-AgNWs/PDMS sensor was characterized and analyzed. The results show that the introduction of the electrospun membrane significantly improves the performance of the PDMS/PVDF-AgNWs/PDMS flexible strain sensor, reduces the hysteresis, increases the sensitivity and repeatability and greatly improves the service life of the PDMS/PVDF-AgNWs/PDMS sensor. When the content of AgNWs in the conductive layer is 0.030 g, and the strain reaches 10%, the guage factor which can directly reflect the sensitivity of the flexible strain sensor can reach 143.85. After 30 days of repeatable test on the self-made sensor, the initial resistance value of the PDMS/PVDF-AgNWs/PDMS flexible strain sensor is only increased by about 2 Ω compared with the initial test under the condition of setting the displacement of 5 mm and stretching 20 times per day. The resistance value of PDMS/PVDF-AgNWs/PDMS flexible strain sensor compared with the maximum displacement value is negligible.
- Ag nanowire /
- polyvinylidene fluoride /
- electrospinning /
- flexible strain sensor /
- sensitivity

HTML全文

图 1 聚二甲基硅氧烷/聚偏氟乙烯-纳米Ag线/聚二甲基硅氧烷 (PDMS/PVDF-AgNWs/PDMS)柔性应变传感器的结构示意图

Figure 1. Schematic diagram of polydimethylsiloxane/polyvinylidene fluoride-Ag nanowires/polydimethylsiloxane (PDMS/PVDF-AgNWs/PDMS) flexible strain sensor

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图 2 PDMS/PVDF-AgNWs/PDMS柔性应变传感器性能测试装置

Figure 2. Performance test device of PDMS/PVDF-AgNWs/PDMS flexible strain sensor

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图 3 AgNWs的SEM图像

Figure 3. SEM images of AgNWs

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图 4 PVDF静电纺丝膜的SEM图像

Figure 4. SEM images of PVDF electrospinning film

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图 5 PVDF-AgNWs的SEM图像

Figure 5. SEM images of PVDF-AgNWs

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图 6 PDMS/PVDF-AgNWs/PDMS柔性应变传感器的SEM图像

Figure 6. SEM image of PDMS/PVDF-AgNWs/PDMS flexible strain sensor

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图 7 PDMS/PVDF-AgNWs/PDMS柔性应变传感器实物图

Figure 7. Physical map of PDMS/PVDF-AgNWs/PDMS flexible strain sensor((a) Original state; (b) Tensile deformation; (c) Tolding deformation; (d) Torsional deformation)

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图 8 PDMS/PVDF-AgNWs/PDMS柔性应变传感器电阻-位移曲线

Figure 8. Resistance-displacement curves of PDMS/PVDF-AgNWs/PDMS flexible strain sensor

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图 9 PDMS/PVDF-AgNWs/PDMS柔性应变传感器拉伸前后导电层中AgNWs排布示意图

Figure 9. Schematic diagram of AgNWs arrangement in conductive layer before and after stretching of PDMS/PVDF-AgNWs/PDMS flexible strain sensor

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图 10 PDMS/PVDF-AgNWs/PDMS柔性应变传感器在不同拉伸速度下的位移-电阻变化曲线

Figure 10. Displacement-resistance curves of PDMS/PVDF-AgNWs/PDMS flexible strain sensor at different tensile speeds

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图 11 不同AgNWs质量的PDMS/PVDF-AgNWs/PDMS柔性应变传感器在拉伸速度为20 mm/min时的时间-电阻曲线

Figure 11. Time-resistance curves of PDMS/PVDF-AgNWs/PDMS flexible strain sensor with different mass of AgNWs at tensile speed of 20 mm/min

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图 12 不同AgNWs质量的PDMS/PVDF-AgNWs/PDMS柔性应变传感器的灵敏度曲线

Figure 12. Sensitivity curves of PDMS/PVDF-AgNWs/PDMS flexible strain sensors with different mass of AgNWs

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图 13 不同应变下PDMS/PVDF-AgNWs/PDMS柔性应变传感器点亮LED灯泡图片

Figure 13. Photograph of PDMS/PVDF-AgNWs/PDMS flexible strain sensor illuminates LED bulb under different strains ((a) ε=0; (b) ε=1%; (c) ε=5%; (d) ε=10%)

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图 14 PVDF-AgNWs-PDMS柔性应变传感器的可重复性测试曲线

Figure 14. Repeatability test curve of PVDF-AgNWs-PDMS flexible strain sensor

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