Dielectric properties of piezoelectric polyvinylidene flouride (PVDF)
作者:
Mark B. Moffett,
James M. Powers,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 76,
issue S1
页码: 82-82
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.2022045
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Measurements were made of the free dielectric constant and the dielectric loss tangent of piezoelectric polyvinylidene fluoride (PVDF) at frequencies between 1 kHz and 5 MHz and temperatures between − 28°C and + 51°C. Samples of nonvoided and voided PVDF were tested. The dielectric constant increases with increasing temperature and/or decreasing frequency, ranging from about 3 to 11 for the voided material and from about 4 to 14 for the nonvoided material. The dielectric loss tangent (dissipation factor) ranged from about 0.02 at low frequencies and high temperatures to about 0.3 at high frequencies and high temperatures. The voided material was not as 1ossy as the nonvoided material, with maximum values 0.2 for the voided material and 0.3 for the nonvoided material. A slight temperature aging effect was observed; an increase of a few percent in dielectric constant resulted from cycling the samples to 51°C.
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