Artigo
Piezoelectric effect in composite polyurethane - Ferroelectric ceramics
Fecha
1999-03-16Registro en:
Physica Status Solidi A-applied Research. Berlin: Wiley-v C H Verlag Gmbh, v. 172, n. 1, p. 265-271, 1999.
0031-8965
10.1002/(SICI)1521-396X(199903)172:1<265
WOS:000079517400028
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 characterised 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 less than or equal 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.