石墨烯/微球导电纳米纤维传感纱线的制备及性能

Preparation and properties of graphene/microsphere conductive nanofiber sensing yarn

为制备高灵敏的柔性纱线型压力传感器,利用共轭静电纺纱和静电喷雾技术一步制备出嵌入氧化石墨烯(GO)片和聚苯乙烯(PS)微球的纳米纤维传感纱线,进一步结合化学还原工艺得到石墨烯/微球导电纳米纤维传感纱线,并组装成纱线型压力传感器。试验表征了传感纱线的形貌、力学性能和导电性能,并测试了传感器的压力传感性能和应用性能。结果表明:该传感器具有良好的柔性和可拉伸性,在0.01~0.05 N、0.05~0.50 N和0.50~2.00 N三个压力范围内的灵敏度分别为32.51 N^(-1)、16.485 N^(-1)和2.712 N^(-1),具有良好的压力响应循环稳定性和可靠性,可应用于监测呼气、手指运动等信号和摩斯电码,在智能纺织品、健康监测、人工智能等领域具有广阔的应用前景。

In order to obtain a flexible yarn pressure sensor with high sensitivity,a nanofiber sensing yarn embedded with graphene oxide(GO) sheets and polystyrene(PS) microspheres is prepared in one step by using conjugated electrospinning and electrospraying technology.Subsequently,the graphene/microsphere conductive nanofiber sensing yarns are prepared by chemical reduction process and assembled into a yarn pressure sensor.The sensing yarn′ s morphology,mechanical properties,and electrical conductivity are characterized,and the sensor′s pressure sensing performance and application performance are tested.The results show that the sensor has good flexibility and stretchability.The sensitivity in the three pressure ranges of 0.01-0.05 N,0.05-0.50 N and 0.50-2.00 N is 32.51 N^(-1),16.485 N^(-1)and 2.712 N^(-1),respectively.It has good pressure response cycle stability and reliability,and can be applied to monitor signals such as exhalation and finger movement and Moss code.It has versatile applications in the fields of intelligent textiles,health monitoring,and artificial intelligence.