Applications of multifunctional polymer-matrix composites in hybrid heat sinks

Siu N. Leung; Omer M. Khan; Hani E. Naguib; Francis Dawson; Vincent Adinkrah

doi:10.1117/12.917242

28 March 2012 Applications of multifunctional polymer-matrix composites in hybrid heat sinks

Siu N. Leung, Omer M. Khan, Hani E. Naguib, Francis Dawson, Vincent Adinkrah

Proceedings Volume 8342, Behavior and Mechanics of Multifunctional Materials and Composites 2012; 834229 (2012) https://doi.org/10.1117/12.917242
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

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.

Citation Download Citation

Siu N. Leung, Omer M. Khan, Hani E. Naguib, Francis Dawson, and Vincent Adinkrah "Applications of multifunctional polymer-matrix composites in hybrid heat sinks", Proc. SPIE 8342, Behavior and Mechanics of Multifunctional Materials and Composites 2012, 834229 (28 March 2012); https://doi.org/10.1117/12.917242

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