Electrical properties of PVDF films fabricated by direct ink writing

In this study, direct ink writing (DIW) was applied to preparing polyvinylidene fluoride (PVDF) film. The rheological properties of inks were studied, and the influence of process parameters on material properties was systematically investigated by SEM, FTIR, DSC, dielectric, ferroelectric and piezo...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Central South University 2023-05, Vol.30 (5), p.1477-1489
Main Authors: Yang, Hong, Zhao, Lian-zhong, Zhang, Yan, Luo, Hang, Wang, Ri-chu, Zhang, Dou, Wang, Xiao-feng
Format: Article
Language:English
Subjects:
Beta phase
Electric polarization
Electrical properties
Engineering
Ferroelectricity
Inks
Material properties
Metallic Materials
Molecular chains
Piezoelectricity
Polyvinylidene fluorides
Printing
Process parameters
Rheological properties
Shear forces
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, direct ink writing (DIW) was applied to preparing polyvinylidene fluoride (PVDF) film. The rheological properties of inks were studied, and the influence of process parameters on material properties was systematically investigated by SEM, FTIR, DSC, dielectric, ferroelectric and piezoelectric properties testing. The results show that effective β -phase content of PVDF film prepared by printing parameters with printing needle size of 27G and printing speed of 20 mm/s was 52.38%, which was improved by 51.47% compared with the film prepared by solution casting. The high β -phase content improved the electrical properties of film. This is attributed to the orientation of PVDF molecular chains by the drawing force generated at printing needle and the shear force generated during extrusion. The piezoelectric output voltage increases approximately linearly with increasing finger height from the sensor. The sensitivity of the sensor is 78 mV/N, which is comparable to the performance of one prepared by solution casting and treated with electric polarization. The excellent piezoelectric performance of PVDF film demonstrates application potential in small deformation monitoring.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-023-5340-6