聚丙烯腈纳米纤维基压电声学传感器的制备及性能  

Preparation and Performance of Polyacrylonitrile Nanofiber-Based Piezoelectric Acoustic Sensors

作　　者：杨天哲 柯弈名 明晓娟 李沐芳[1] 王栋[1] 钟卫兵[1] Tianzhe Yang;Yiming Ke;Xiaojuan Ming;Mufang Li;Dong Wang;Weibing Zhong(Key Laboratory of Textile Fiber and Products,Ministry of Education,Wuhan Textile University,Wuhan 430200,China;College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China)

机构地区：[1]武汉纺织大学纺织纤维及制品教育部重点实验室,湖北武汉430200 [2]东华大学化学与化工学院,上海201620

出　　处：《高分子材料科学与工程》2024年第9期128-135,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金青年科学基金资助项目(52103063);湖北省自然科学基金计划(2023AFB728)。

摘　　要：为提高柔性声学传感器的声电转换能力,采用静电纺丝技术制备不同纺丝液浓度和不同厚度的聚丙烯腈(PAN)纳米纤维膜,构筑“三明治”结构柔性声学传感器。研究了纺丝液浓度和纤维膜厚度对膜谐振特性和声学传感器输出电压的影响,以及薄膜谐振特性与传感器输出电压响应之间的关联性。结果表明,纺丝液浓度直接影响分子链构象、纤维直径及其均匀度;其中构象会影响薄膜的压电性能和声学传感器的声电转换过程、纤维直径和均匀度会影响膜的谐振特性,从而影响器件的输出电压。当纺丝液浓度为12%、PAN纳米纤维膜厚度为60μm时,构筑的声学传感器的输出电压最高可达2.7 V。In order to improve the acoustic conversion ability of flexible acoustic sensors,polyacrylonitrile nanofiber films with different spinning liquid concentrations and thicknesses were prepared by electrospinning technology,and a"sandwich"structure flexible acoustic sensor was constructed.The influence of spinning fluid concentration and fiber membrane thickness on the resonance characteristics of the fiber membranes and output voltage of the acoustic sensor,as well as the correlation between the resonance characteristics of the films and output voltage response of the sensor were studied.The results show that the concentration of spinning fluid directly affects the molecular chain conformation,fiber diameter and its uniformity;among them,conformation will affect the piezoelectric performance of the films and acoustic conversion process of the acoustic sensor,fiber diameter and uniformity affect the resonance characteristics of the membranes,thus affecting the output voltage of the device.When the concentration of spinning liquid is 12%and thickness of PAN nanofiber film is 60μm,the output voltage of the constructed acoustic sensor can reach up to 2.7 V.

关 键 词：聚丙烯腈 静电纺丝 声电转换 压电 谐振特性 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]