Preparation of rGO@Fe3O4 nanocomposite and its application to enhance the thermal conductivity of epoxy resin

Jiaqi Geng; Yuanli Men; Chen Liu; Xiang Ge; Caideng Yuan

doi:10.1039/d1ra02254g

Preparation of rGO@Fe₃O₄ nanocomposite and its application to enhance the thermal conductivity of epoxy resin

RSC Adv. 2021 May 5;11(27):16592-16599. doi: 10.1039/d1ra02254g. eCollection 2021 Apr 30.

Authors

Jiaqi Geng¹, Yuanli Men¹, Chen Liu¹, Xiang Ge², Caideng Yuan¹

Affiliations

¹ Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University Tianjin 300350 P. R. China cdyuan@tju.edu.cn.
² Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University Tianjin 300354 China gexiang.hkust@gmail.com.

Abstract

In this study, we report a simple method to improve the thermal conductivity of epoxy resin by using new magnetic composites as fillers. The rGO@Fe₃O₄ nanocomposite has been prepared by a solvothermal method, and its morphology and chemical structure were characterized and analyzed by various characterization methods. Afterwards, the rGO@Fe₃O₄/EP composite material was obtained in an external magnetic field, in which the rGO@Fe₃O₄ is uniformly dispersed in the epoxy resin matrix, arranged along the direction of the magnetic field. In addition, the orientation of rGO@Fe₃O₄ increases with the magnetic field intensity. After doping 30% (wt) rGO@Fe₃O₄ into epoxy resin and curing under a 500 Gs magnetic field, the rGO@Fe₃O₄/EP composite material is anisotropic and has a higher thermal conductivity (increased by 196.60%) parallel to the direction of the magnetic field compared to a pure ring oxygen resin.