Paper Titles
Influence of Temperature on Fracture Mechanisms of Magnesium Composites
p.375
Influence of Surface Skin on the Fatigue Properties of Die-Cast Magnesium Alloy AS21X
p.379
Crack Growth Anomalies in Base Steel P91 and in HAZ
p.383
Damping Measurements of the Magnesium Wrought Alloys AZ31, AZ61 and AZ80 after Indirect and Hydrostatic Extrusion
p.387
Electrical Properties of Polymer Composites
p.391
Application of Giant Magnetostrictive Material into Construction of Broad Spectrum Vibration Generator
p.395
On a Testing of Mechanical Properties of Material Surfaces
p.399
Experimental Identification of Magnetorheological Composites and Elastomers Properties
p.403
Relation between Uniaxial and Equi-Biaxial Creep and Creep Fracture Behaviour in P91 Steel
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Electrical Properties of Polymer Composites

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Abstract:

Permittivity of about 1 µm thin films prepared from polymethylmetactrylate (PMMA) solution doped with 20 % of diphenyl sulfoxide was studied. Permittivity of the films was measured as a function of the temperature. The measurement of the dependence of polarization on electrical field was performed using a standard Sawyer-Tower circuit. The presence of the dopant increases the composite permittivity namely above the PMMA glass transition temperature. Hysteresis loops observed on the measured polarization vs. electrical field dependence indicate easier and more pronounced polarizability of the composite comparing to pristine PMMA.

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Periodical:

Materials Science Forum (Volume 482)

Pages:

391-394

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.482.391

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Online since:

April 2005

Authors:

T. Podgrabinski, Petr Slepička, V. Rybka, Václav Švorčík

Keywords:

Composite Material, Dielectric, Polymer, Thin Film

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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