Publicação: Piezoelectric effect in composite polyurethane-ferroelectric ceramics
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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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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
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Inglês
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Physica Status Solidi (A) Applied Research, v. 172, n. 1, p. 265-271, 1999.
