0000000000170159

AUTHOR

Ieva Kranauskaite

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Dielectric properties of graphite-based epoxy composites

2014

International audience; Composite materials based on epoxy resin filled with various kinds of graphite particles: exfoliated graphite, natural graphite, and coarse, medium and fine artificial graphites have been prepared. Results of broadband dielectric investigations of such materials in wide temperature (25-450 K) and frequency (20 Hz-3 THz) ranges are presented. The dielectric permittivity strongly increases with graphite particle size. The graphite particle size and shape also have a strong impact on freezing temperature, conductivity activation energy and composite electromagnetic absorption properties at room temperature. The lowest percolation threshold is observed for exfoliated gra…

[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]graphite[CHIM.MATE]Chemical Sciences/Material chemistryexfoliationepoxy[SPI.MAT]Engineering Sciences [physics]/MaterialsCondensed Matter::Materials Science[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism[CHIM.POLY]Chemical Sciences/Polymerspercolation threshold[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph][PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci][SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]compositedielectric propertieSettore CHIM/02 - Chimica Fisica
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