Electrical Properties of Powders of Thermally Reduced Graphite Oxide and Epoxy Composites Based on Them

The effect of annealing thermally reduced graphite oxide powders on their electrical conductivity and density at pressures up to 7 MPa is considered. The specific surface area of ​​the powders is determined at various temperatures of annealing. The complex permittivity of epoxy composites based on t...

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Bibliographic Details
Published in:Russian journal of physical chemistry. B 2020-11, Vol.14 (6), p.980-985
Main Authors: Simbirtseva, G. V., Piven’, N. P., Babenko, S. D.
Format: Article
Language:English
Subjects:
Annealing
Chemistry
Chemistry and Materials Science
Complex permittivity
Dielectric loss
Electrical and Magnetic Properties of Materials
Electrical properties
Electrical resistivity
Frequency ranges
Graphite
Graphite fiber reinforced plastics
Graphite-epoxy composites
Physical Chemistry
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Summary:The effect of annealing thermally reduced graphite oxide powders on their electrical conductivity and density at pressures up to 7 MPa is considered. The specific surface area of ​​the powders is determined at various temperatures of annealing. The complex permittivity of epoxy composites based on these powders used as fillers is measured at frequencies of 1.7, 2.9, and 9.8 GHz. The obtained average value of the dielectric loss tangent of the investigated composites in the specified frequency range exceeded the corresponding average value for epoxy composites based on natural graphite by 5–6 times.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793120060287