Magnetic field-induced enhancement of thermal conductivities in polymer composites by linear clustering of spherical particles. (1st March 2018)

• Record Type: Journal Article
• Authors: Chung, Jae-Yong; Lee, Jung-Goo; Baek, Youn-Kyung; Shin, Pyung-Woo; Kim, Young-Kuk
• Is Part Of: Composites. Number 136(2018)
• Page Start: 215
• Page End: 221
• Publication Date: 2018-03-01
• Subjects: Al2O3 -- Magnetic field -- Assembly -- Composites; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2017.10.033
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: We developed linearly linked spherical fillers in polymer composites with incorporating Al2 O3 -Fe3 O4 hybrid particles under a magnetic field to form thermal networks for high thermal conductivity. The Al2 O3 -Fe3 O4 hybrid particles were prepared by a simple precipitation method and their magnetic properties were characterized with magnetic hysteresis. The Al2 O3 -Fe3 O4 hybrid particles were well aligned through direction of magnetic field as confirmed by microscopic observation. The polymer composites obtained with Al2 O3 -Fe3 O4 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. Graphical abstract: