Improving the dielectric and piezoelectric properties of screen-printed Low temperature PZT/polymer composite using cold isostatic pressing

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Almusallam, A.^1 ; Yang, K.^1 ; Cao, Z.^1 ; Zhu, D.^1 ; Tudor, J.^1 ; Beeby, S.P.^1

Electronics and Computer Science (ECS), University of Southampton, SO17 1BJ, United Kingdom^1

关键词: Cold isostatic pressing;    Dielectric and piezoelectric properties;    Electronics applications;    Low temperatures;    Optimized conditions;    Poling conditions;    Processed materials;    Relative dielectric constant;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012083/pdf
DOI  :  10.1088/1742-6596/557/1/012083

来源: IOP

【 摘 要 】

This paper reports an improvement in dielectric and piezoelectric properties of screen-printed PZT/polymer films for flexible electronics applications using Cold Isostatic Pressing (CIP). The investigation involved half and fully cured PZT/polymer composite pastes with weight ratio of 12:1 to investigate the effect of the CIP process on the piezoelectric and dielectric properties. It was observed that the highest dielectric and piezoelectric properties are achieved at pressures of 5 and 10 MPa for half and fully cured films respectively. The relative dielectric constants were 300 and 245 measured at 1 kHz for the half and fully cured samples. Using unoptimised poling conditions, the initial d33 values were 30 and 35 pC/N for the half and fully cured films, respectively. The fully cured sample was then poled using optimized conditions and demonstrated a d33of approximately 44 pC/N which is an increase of 7% compared with non-CIP processed materials.