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Open Access Influence of PZT piezoelectric ceramics on the structure and electric properties of piezoelectric lead zirconate titanate/poly(vinylidene fluoride) composites

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In the paper, piezoelectric lead zirconate titanate/poly(vinylidene fluoride) composites were prepared by hot pressing method, and influences of changing types, volume fraction and particle size of piezoelectric lead zirconate titanate (PZT) on the dielectric constant (ε r ), dielectric loss (tan δ), the piezoelectric strain constant (d 33) and piezoelectric voltage constant (g 33) of this composites were also studied. The results showed that the influence of PZT types on the ε r of the composites was not obvious, while (when) the tan δ varied a lot, and when the volume fraction of PZT was larger than 50%, there were larger differences between the composites of the g 33 and d 33. The ε r , tan δ, d 33 and g 33 of piezoelectric composites increased along with the increase of the volume fraction of the ceramic phase. With the particle size of PZT increased, the ε r of composites showed a trend of increasing first and then decreasing, and the tan δ decreased at first, then increased and decreased at last. When grain size of ceramic particle was 150∼180 μm, the piezoelectric composite had the best comprehensive performance (ε r = 54.48, tan δ = 0.029, d 33 = 17.9 pC/N, g 33 = 37.11 mV ยท m/N).

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Keywords: DIELECTRIC; PARTICLE SIZE; PIEZOELECTRIC; PZT/PVDF; VOLUME FRACTION

Document Type: Research Article

Publication date: December 1, 2016

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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