期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 72, 期 3, 页码 467-475出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2011.12.010
关键词
Polymer-matrix composites; Transport properties; Mechanical properties; X-ray diffraction
资金
- Morgan AMT
- EPSRC
- EPSRC [EP/E059678/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E059678/1] Funding Source: researchfish
Thermally conducting and highly compliant composites for thermal interface applications were developed by dispersing graphite nanoplatelets (GNPs) in silicone polymer using a three-roll mill process. X-ray diffraction and electron microscopy showed that the roll mill produces composites with better dispersion of GNPs than previously achieved by speed and mechanical mixing. The roll mill also allows production of a composite at 25 wt.% GNP loading. The thermal conductivities of the composites reached 1.03 and 3.15 W/m K at 8 and 25 wt.% of GNPs, respectively, compared to 0.17 W/m K for silicone. Compression testing showed that the composites' moduli increase by 1.5 times up to 20 wt.% loading but the strength and strain to failure decrease. The Shore hardness was similar or slightly lower to that of silicone. The composites are thus promising alternatives to the commercial thermal interface materials currently available. (C) 2011 Elsevier Ltd. All rights reserved.
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