Copper Shell Networks in Polymer Composites for Efficient Thermal Conduction

Title
Copper Shell Networks in Polymer Composites for Efficient Thermal Conduction
Authors
유승건이장우한태희박철민Youngdon Kwon홍순만구종민
Keywords
percolation; composites; electroless plating; core-shell; thermal conductivity; electrical conductivity
Issue Date
2013-10
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 5, 11618-11622
Abstract
Thermal management of polymeric composites is a crucial issue to determine the performance and reliability of the devices. Here, we report a straightforward route to prepare polymeric composites with Cu thin film networks. Taking advantage of the fluidity of polymer melt and the ductile properties of Cu films, the polymeric composites were created by the Cu metallization of PS bead and the hot press molding of Cu-plated PS beads. The unique three-dimensional Cu shell-networks in the PS matrix demonstrated isotropic and ideal conductive performance at even extremely low Cu contents. In contrast to the conventional simple melt-mixed Cu beads/PS composites at the same concentration of 23.0 vol %, the PS composites with Cu shell networks indeed revealed 60 times larger thermal conductivity and 8 orders of magnitude larger electrical conductivity. Our strategy offers a straightforward and high-throughput route for the isotropic thermal and electrical conductive composites.
URI
http://pubs.kist.re.kr/handle/201004/46552
ISSN
19448244
Appears in Collections:
KIST Publication > Article
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