Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 37, Issue 5, Pages 727-734Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2005.07.006
Keywords
hybrid; thermal properties; thermal analysis; powder processing
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This study aims at investigating package materials based on polymer matrix for microelectronics. The next generation package materials are expected to possess high heat dissipation capability in addition to low coefficient of thermal expansion (CTE) as the accumulated heat from high performance electronic devices should be removed for proper operation. In this study, various inorganic fillers including aluminum nitride (AIN), wollastonite, silicon carbide whisker (SiC) and boron nitride (BN) with different shape and size were used alone or in combination to prepare thermally conductive polymer composites. In case of AIN, titanate Coupling agent was used for the surface treatment of fillers. The use of hybrid filler was found to be effective in increasing thermal conductivity of the composite probably due to the enhanced connectivity offered by structuring filler with high aspect ratio in hybrid filler. For given filler loading, the use of larger particle and surface treated filler resulted in composite materials with enhanced thermal conductivity. The surface treatment of filler also allowed producing the composites with lower CTE. (c) 2005 Elsevier Ltd. All rights reserved.
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