PVDF纳米包芯纱线的连续制备及其无线传感应用  

Continuous preparation of PVDF nanofibers core yarn and the wireless sensing applications

作　　者：魏子君 杨伟峰 侯成义[1] 李克睿 李耀刚[1] 王宏志[1] 张青红[1] WEI Zijun;YANG Weifeng;HOU Chengyi;LI Kerui;LI Yaogang;WANG Hongzhi;ZHANG Qinghong(College of Materials Science and Engineering,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai,China)

机构地区：[1]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海

出　　处：《东华大学学报(自然科学版)》2025年第1期1-7,共7页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金(52073057)。

摘　　要：随着可穿戴领域的发展,满足穿戴设备的能量需求和实现数字信号无线传输技术变得尤为迫切。基于摩擦纳米发电机(TENG)技术的纤维及纤维组件,在能量收集和自供电领域展现出重要的应用前景。采用共轭静电纺丝技术连续制备聚偏二氟乙烯(PVDF)纳米包芯纱线,并通过扫描电镜(SEM)、X射线衍射仪(XRD)、傅里叶红外光谱仪(FTIR)及水接触角等方法对纤维结构和性能进行表征。以所制备的纳米包芯纱线为TENG的能量来源,结合电感电容(LC)谐振电路,构建无线传感织物。试验结果表明,这种摩擦电纱线不仅可数字刺绣,还具备136.2°的疏水接触角,并能与多种织物摩擦产生电荷,展现出优异的电学输出性能。此外,通过调控纤维刺绣图案和并联外部电容,能够区分谐振信号的频率,实现无线电话拨号功能。这种将纳米包芯纱线与LC谐振电路结合的方法为下一代自供电无线传感纺织品的设计提供了新的思考方向。With the advancement of the wearable technology field,there arises a pressing need to meet the energy requiements and wireless transmission technologies for digital signal transmission in wearable applications.Fibers and fiber components leveraging triboelectric nanogenerator(TENG)technology offer promising potential for use in energy harvesting and selfpowering applications.In this study,polyvinylidene difluoride(PVDF)nanofibers core yarn was prepared using the conjugated electrospinning technique.Subsequently,the fiber structure and properties were characterized by using scanning electron microscope(SEM),X-ray diffractometer(XRD),Fourier infrared spectrometer(FTIR)and water contact angle measurements.Furthermore,a wireless sensing fabric was constructed by using the prepared nanofibers core yarn as the energy source for TENG and combined with an inductance and capacitance(LC)resonant circuit.Experimental results show that the nanofibers core yarn is amenable to digital embroidery,possesses a hydrophobic contact angle of 136.2°,as well as being frictionally electrified with a wide range of fabrics used in daily life,exhibiting excellent electrical output properties.Additionally,the frequency of the resonant signal can be differentiated and wireless telephone dialing can be realized by regulating the fiber embroidery pattern and the external shunt capacitor.This combination of triboelectric fiber and LC resonant circuits offers a fresh perspective for the development of next-generation self-powered wireless sensing textiles.

关 键 词：纳米包芯纱线 无线传感 LC谐振电路 可穿戴 

分 类 号：TB34[一般工业技术—材料科学与工程]