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Proceedings Paper

Applications of multifunctional polymer-matrix composites in hybrid heat sinks
Author(s): Siu N. Leung; Omer M. Khan; Hani E. Naguib; Francis Dawson; Vincent Adinkrah
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Paper Abstract

Designers of electronic devices and telecommunications equipment have used three-dimensional chip architecture, comprised of a vertically integrated stack of chips, to increase the number of transistors on integrated circuits. These latest chips generate excessive amount of heat, and thus can reach unacceptably high temperatures. In this context, this research aims to develop thermally conductive liquid crystal polymer (LCP)/hexagonal boron nitride (hBN) composite films to replace the traditionally-used Kapton films that satisfy the electrical insulation requirements for the attachment of heat sinks to the chips without compromising the heat dissipation performance. Parametric study was conducted to elucidate the effects of hBN contents on the heat dissipation ability of the composite. The performance of the hybrid heat sinks were experimentally simulated by measuring the temperature distribution of the hybrid heat sinks attached to a 10 W square-faced (i.e., 10 cm by 10 cm) heater. Experimental simulation show that the maximum temperature of the heater mounted with a hybrid heat sink reduced with increased hBN content. It is believed the fibrillation of LCP matrix leads to highly ordered structure, promoting heat dissipation ability of the electrically insulating pad of the hybrid heat sink.

Paper Details

Date Published: 28 March 2012
PDF: 9 pages
Proc. SPIE 8342, Behavior and Mechanics of Multifunctional Materials and Composites 2012, 834229 (28 March 2012); doi: 10.1117/12.917242
Show Author Affiliations
Siu N. Leung, Univ. of Toronto (Canada)
Omer M. Khan, Univ. of Toronto (Canada)
Hani E. Naguib, Univ. of Toronto (Canada)
Francis Dawson, Univ. of Toronto (Canada)
Vincent Adinkrah, AEG Power Solutions Inc. (Canada)

Published in SPIE Proceedings Vol. 8342:
Behavior and Mechanics of Multifunctional Materials and Composites 2012
Nakhiah C. Goulbourne; Zoubeida Ounaies, Editor(s)

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