PAN/rGO纤维膜应变传感器的制备及性能

Preparation and Performance of PAN/rGO Fiber Membrane Strain Sensor

石墨烯材料被广泛用于应变传感器的制备中,但是如何使其具备更高的灵敏度一直是研究人员的一个困扰。基于石墨烯优异的导电性和拉伸性,结合质量轻且多孔的聚丙烯腈(PAN)纳米纤维膜制备一种高灵敏度柔性应变传感器。通过设置定量的PAN与三个梯度质量的石墨烯形成对照实验,探究石墨烯含量对复合材料的性能影响。结果表明,石墨烯质量分数增加,会促使PAN/rGO复合材料的孔隙结构变大且均匀,石墨烯含量越高,复合材料电阻变化率越大,电导率越大,在吹气实验中,2 s内就可以完成一次气体压力检测,是制备高灵敏度形变传感器的理想材料。

Graphene material has been widely used in the preparation of strain sensors,but how to make it more sensitive has always been a concern for researchers.In this paper,based on the excellent conductivity and stretchability of graphene,a highly sensitive flexible strain sensor was prepared by combining with lightweight and porous polyacrylonitrile(PAN)nanofiber membrane.By setting up controlled experiments with quantitative PAN and three gradient masses of graphene,the influence of graphene content on the performance of the composite material was investigated.The results showed that as the graphene mass fraction increased,the pore structure of the PAN/rGO composite material became larger and more uniform.Moreover,the higher the graphene content,the greater the resistance change rate and the conductivity of the composite material.In the blowing experiment,gas pressure detection could be completed within 2 seconds,making it an ideal material for preparing highly sensitive strain sensors.