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Dielectric properties of aluminum-epoxy composites

DSpace at IIT Bombay

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Title Dielectric properties of aluminum-epoxy composites
 
Creator SINGH, V
KULKARNI, AR
MOHAN, TRR
 
Subject metal-filled polymer
percolation-threshold
electrical-properties
critical-behavior
resin composites
permittivity
conductivity
mixtures
constant
composites
dielectric properties
interfacial polarization
metal-polymer complexes
microstructure
 
Description 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 .
 
Publisher JOHN WILEY & SONS INC
 
Date 2011-08-04T13:25:11Z
2011-12-26T12:54:44Z
2011-12-27T05:42:58Z
2011-08-04T13:25:11Z
2011-12-26T12:54:44Z
2011-12-27T05:42:58Z
2003
 
Type Article
 
Identifier JOURNAL OF APPLIED POLYMER SCIENCE, 90(13), 3602-3608
0021-8995
http://dx.doi.org/10.1002/app.13085
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9375
http://hdl.handle.net/10054/9375
 
Language en