碳纳米管/聚偏氟乙烯纳米纤维膜的制备及其压电性能

为提高聚偏氟乙烯(PVDF)的压电性能,采用静电纺丝法将碳纳米管(CNTs)引入到PVDF纳米纤维膜中制备CNTs/PVDF纳米纤维膜,并组装成三明治结构的柔性压电传感器,探究CNTs质量分数对CNTs/PVDF纳米纤维膜压电性能的影响.借助扫描电子显微镜、X射线衍射仪、傅里叶变换红外光谱仪、万能试验机以及数字示波器对...

Preparation and piezoelectric properties of carbon nanotubes/polyvinylidene fluoride nanofiber membrane

In order to improve the piezoelectric properties of polyvinylidene fluoride(PVDF)nanofiber membrane,carbon nanotubes(CNTs)were introduced in PVDF nanofiber membrane to fabricate CNTs/PVDF nanofiber membrane by electrospinning,and a simple flexible piezoelectric sensor with a sandwich structure was assembled.The effect of the mass fraction of CNTs on the piezoelectric properties of CNTs/PVDF nanofiber membrane was investigated.The morphology,structure,mechanical properties and piezoelectric properties of the nanofibers were characterized by scanning electron microscope,X-ray diffractometer,Fourier transform infrared spectrometer,universal testing machine and digital oscilloscope.The results show that CNTs/PVDF nanofiber membrane has good mechanical properties,and the addition of CNTs into the fiber supports the formation ofβcrystal type in the crystal structure.When the mass fraction of CNTs is 5%,the content ofβcrystal type is the highest in the crystal structure of CNTs/PVDF nanofiber,and the piezoelectric performance is the strongest.Under such conditions,the output voltage of the flexible sensor reached the maximum value of 7.5 V.