<p>With the advancement in flexible electronics, research on polyvinylidene fluoride (PVDF)-based films has intensified, driven by their superior piezoelectric properties in flexible electronic material applications. However, the current research on PVDF-based composite films is still in the laboratory stage, and the prepared samples have a small area and poor repeatability. In this paper, a lead zirconate titanate (PZT)/PVDF composite film was prepared using an extrusion-casting process, and the mechanical, dielectric, and piezoelectric properties were characterized. The results show that the PZT ceramic particles are uniformly dispersed in the PVDF matrix, and the addition of PZT ceramic particles improves the dielectric and piezoelectric properties of the composite film, although its breakdown strength is significantly reduced. With the addition of 32 wt.% PZT particles, the piezoelectric coefficient of the composite film reached 13.2 pC/N, which is more than twice that of PVDF film (4 pC/N).</p>

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Preparation and Performance of Large-Area 0-3 Type PVDF/PZT Composite Film

  • Chao Zhang

摘要

With the advancement in flexible electronics, research on polyvinylidene fluoride (PVDF)-based films has intensified, driven by their superior piezoelectric properties in flexible electronic material applications. However, the current research on PVDF-based composite films is still in the laboratory stage, and the prepared samples have a small area and poor repeatability. In this paper, a lead zirconate titanate (PZT)/PVDF composite film was prepared using an extrusion-casting process, and the mechanical, dielectric, and piezoelectric properties were characterized. The results show that the PZT ceramic particles are uniformly dispersed in the PVDF matrix, and the addition of PZT ceramic particles improves the dielectric and piezoelectric properties of the composite film, although its breakdown strength is significantly reduced. With the addition of 32 wt.% PZT particles, the piezoelectric coefficient of the composite film reached 13.2 pC/N, which is more than twice that of PVDF film (4 pC/N).