Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties

Title
Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties
Authors
오기원김태호이상수임순호김대흠김희숙
Keywords
graphite nanosheets; nanocomposites; dielectric properties; dispersion
Issue Date
2012-11
Publisher
Macromolecular research
Citation
VOL 20, NO 11, 1197-1200
Abstract
Very thin graphite nanosheets (GNSs) with 11 nm thickness and 250 nm in lateral size were simply prepared from bulk graphite via an ultrasonication and centrifugation in N,N-dimethylformamide (DMF) without any chemical treatments such as using surfactants. GNSs/epoxy nanocomposites with 3 wt% GNSs showed a high dielectric constant (710) and relatively low dielectric loss tangent (less than 0.5) at low frequency (100 Hz). This great improvement in the dielectric properties could be attributed to very thin thickness, excellent dispersibility and sheet-like shape of GNSs in comparison with graphite or thick GNSs.
URI
http://pubs.kist.re.kr/handle/201004/43427
ISSN
15985032
Appears in Collections:
KIST Publication > Article
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