Piezoelectric effect in composite polyurethane-ferroelectric ceramics
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Data
1999-03-01
Autores
Sakamoto, W. K. [UNESP]
Shibatta-Kagesawa, S. [UNESP]
Kanda, D. H F [UNESP]
Fernandes, S. H. [UNESP]
Longo, Elson [UNESP]
Chierice, G. O.
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Resumo
Flexible and free-standing films of piezoelectric composites made up of lead zirconate titanate (PZT) ceramic powder dispersed in a castor oil-based polyurethane (PU) matrix were obtained by spin coating and characterized as materials for sensor applications. The piezoelectric coefficients d 31 and d 33 were measured with the usual technique. The piezoelectric charge constant d 33 yields values up to ≤24 pC/N, even at lower PZT content (33 vol%). Some desirable properties like piezoelectricity, flexibility and good mechanical resistance show this new material to be a good alternative for use as sensors and actuators.
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Palavras-chave
Ceramic materials, Coating techniques, Electric charge, Lead compounds, Nonmetallic matrix composites, Piezoelectric materials, Piezoelectricity, Polyurethanes, Powders, Lead zirconate titanate, Mechanical resistance, Piezoelectric charge constant, Piezoelectric coefficients, Spin coating, Dielectric films
Como citar
Physica Status Solidi (A) Applied Research, v. 172, n. 1, p. 265-271, 1999.