Artigo
Piezoelectric effect in composite polyurethane-ferroelectric ceramics
Fecha
1999-03-01Registro en:
Physica Status Solidi (A) Applied Research, v. 172, n. 1, p. 265-271, 1999.
0031-8965
10.1002/(SICI)1521-396X(199903)172:1<265::AID-PSSA265>3.0.CO;2-N
2-s2.0-0033098247
0896348165708140
4802713321439692
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal de São Carlos (UFSCar)
Universidade de São Paulo (USP)
Resumen
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.
Materias
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