Synergistic effect of spherical Al 2 O 3 particles and BN nanoplates on the thermal transport properties of polymer composites
| Autor: | Youngkuk Kim, Pyoung-Woo Shin, Jung Goo Lee, Youn-Kyung Baek, Jae-Yong Chung |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology Heat sink 010402 general chemistry 021001 nanoscience & nanotechnology Thermal conduction 01 natural sciences 0104 chemical sciences Thermal transport Mechanics of Materials Thermal Ceramics and Composites Wetting Composite material 0210 nano-technology Anisotropy Electrical conductor |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 98:184-191 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2017.03.030 |
| Popis: | Efficient heat transport along through-plane direction is one of the primary requisites for thermal interface materials (TIMs) to relieve heat accumulation at the interface between chip and heat sinks. We report enhanced thermal conduction of Al 2 O 3 -based polymer composites by surface wetting and texturing of thermally conductive hexagonal boron nitride (h-BN) nanoplatelets with large anisotropy (diameter 2 O 3 macrobeads and surface modified h-BN nanoplatelets. Here, the clustering or assembly of h-BN nanoplatelets is analyzed based on depletion interaction of colloidal particles. In addition, further addition of minimal amount of SiO 2 nanoparticles shows a drastic improvement of thermal transport properties, which is attributed to the depletion interaction between nanoplatelets mediated by spherical nanoparticles. Here, the benefits of surface wetting for thermal management composite materials are illustrated. |
| Databáze: | OpenAIRE |
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