Magnetic field-induced enhancement of thermal conductivities in polymer composites by linear clustering of spherical particles

We developed linearly linked spherical fillers in polymer composites with incorporating Al2O3-Fe3O4 hybrid particles under a magnetic field to form thermal networks for high thermal conductivity. The Al2O3-Fe3O4 hybrid particles were prepared by a simple precipitation method and their magnetic prope...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2018-03, Vol.136, p.215-221
Main Authors: Chung, Jae-Yong, Lee, Jung-Goo, Baek, Youn-Kyung, Shin, Pyung-Woo, Kim, Young-Kuk
Format: Article
Language:English
Subjects:
Al2O3
Assembly
Composites
Magnetic field
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Summary:We developed linearly linked spherical fillers in polymer composites with incorporating Al2O3-Fe3O4 hybrid particles under a magnetic field to form thermal networks for high thermal conductivity. The Al2O3-Fe3O4 hybrid particles were prepared by a simple precipitation method and their magnetic properties were characterized with magnetic hysteresis. The Al2O3-Fe3O4 hybrid particles were well aligned through direction of magnetic field as confirmed by microscopic observation. The polymer composites obtained with Al2O3-Fe3O4 hybrid particles possessed high thermal conductivity in a parallel magnetic alignment direction at low filler loading, which is more than 240% outperformed the composites with randomly dispersed fillers. [Display omitted]
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2017.10.033