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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9375

Title: Dielectric properties of aluminum-epoxy composites
Authors: SINGH, V
KULKARNI, AR
MOHAN, TRR
Keywords: metal-filled polymer
percolation-threshold
electrical-properties
critical-behavior
resin composites
permittivity
conductivity
mixtures
constant
Issue Date: 2003
Publisher: JOHN WILEY & SONS INC
Citation: JOURNAL OF APPLIED POLYMER SCIENCE, 90(13), 3602-3608
Abstract: Dielectric properties of Al-epoxy composites were characterized as a function of composition, frequency, and temperature. The dielectric constant increased smoothly with an increase in the concentration of aluminum. An increase in dielectric constant was also observed with an increase in temperature as well as with a decrease in frequency. In general, dissipation factor values for composites with higher concentrations of aluminum were greater than those with lower volume content of aluminum. Also, the dissipation factor showed an increase both with a decrease in frequency and an increase in temperature. The increase in values of dielectric constant and dissipation factor with an increase in concentration of aluminum was attributed to interfacial polarization. The absence of any discontinuity in the plot of dielectric constant versus composition was ascribed to the absence of continuous aluminum chains in the composition range investigated. The increase in dielectric constant with a rise in temperature was attributed to the segmental mobility of the polymer molecules. (C) 2003 .
URI: http://dx.doi.org/10.1002/app.13085
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9375
http://hdl.handle.net/10054/9375
ISSN: 0021-8995
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