Publication: Tungsten Trioxide Reinforced Epoxy Composites with Increased Dielectric Permittivity and Conductivity
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2022-09-04
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Abstract
This study focuses on the improvement of ac electrical properties of epoxy polymer
matrix for energy storage applications by reinforcing it with WO3 micro particles. The
Bragg diffraction peaks represents to the triclinic structure of WO3 particles. The particle
dimensions are between 600 and 800 nm. The samples have been prepared by using the
mixture of liquid bisphenol A-epichlorohydrin epoxide resin and isophorone diamine in
2:1 ratio. To prepare composites, µ-WO3 have been added at a rate of 5%, 10%, 20%,
and 30% by mass. Electrical investigation of epoxy composites containing WO3 included
the real and imaginary components of complex permittivity function, loss tangent, the real
and imaginary components of complex electrical modulus, and conductivity in the
frequency range of 20 Hz-15 MHz. As a result, it has been determined that among other
composites, the composite having 20% WO3 particle addition has the highest Ɛ´ and Ɛ´´
values in the low frequency range. On the other hand, compared to pure epoxy, the highest
conductivity values have been observed in ac conductivity in the mid and low frequency
regions with 20% and 30% WO3 additives, respectively
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ŞAHİN N., KARABUL Y., KILIÇ M., GÜVEN ÖZDEMİR Z., ESMER K., \"Tungsten Trioxide Reinforced Epoxy Composites with Increased Dielectric Permittivity and Conductivity
\", TURKISH PHYSICAL SOCIETY 38 th INTERNATIONAL PHYSICS CONGRESS, Türkiye, 31 Ağustos - 04 Eylül 2022