Dielectric and pyroelectric properties of a composite of ferroelectric ceramic and polyurethane
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
01/05/2002
|
| Resumo |
Flexible piezo- and pyroelectric composite was made in the thin film form by spin coating. Lead Zirconate Titanate (PZT) ceramic powder was dispersed in a castor oil-based polyurethane (PU) matrix, providing a composite with 0-3 connectivity. The dielectric data, measured over a wide range of frequency (10(-5) Hz to 105 Hz), shows a loss peak around 100 Hz related with impurities in the polymer matrix. There is also an evidence of a peak in the range 10(-4) Hz, possibly originating from the glass transition temperature T of the polymer. The pyroelectric coefficient at 34 K is 7.0x10(-5) C(.)m(-2.)K(-1) which is higher than that of P-PVDF (1X10(-5) C(.)m(-2.)K(-1)). |
| Formato |
257-260 |
| Identificador |
http://dx.doi.org/10.1007/s10019-002-0164-8 Materials Research Innovations. New York: Springer-verlag, v. 5, n. 6, p. 257-260, 2002. 1432-8917 http://hdl.handle.net/11449/10024 10.1007/s10019-002-0164-8 WOS:000176213000004 |
| Idioma(s) |
eng |
| Publicador |
Springer |
| Relação |
Materials Research Innovations |
| Direitos |
closedAccess |
| Palavras-Chave | #composites #sensors #dielectric relaxation #pyroelectric coefficient #polyurethane |
| Tipo |
info:eu-repo/semantics/article |
