Preparation and Properties Study of Thermally Conductive Epoxy/Modified Boron Nitride/Graphene Nanosheets Composites

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Chen, Hexiang^1 ; Zhao, Chunbao^1 ; Xu, Suichun^1 ; Yang, Xujie^2

School of Microelectric Engineering, Nanjing College of Information Technology, Nanjing

210046, China^1

School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing

210094, China^2

关键词: Conductive epoxy;    Epoxy composite;    Epoxy resin composites;    Filler particles;    Graphene nanosheets;    Insulating properties;    Octadecyltrimethylammonium bromide;    Stability properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012043/pdf
DOI  :  10.1088/1757-899X/274/1/012043

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A series of thermally conductive and electric-insulating epoxy composites filled with boron nitride (BN) modified by octadecyl trimethyl ammonium bromide and graphene nanosheets (GNP) were prepared. The effects of modified-BN (BNOTAB) and GNP content on thermal conductivity, electric-insulating and thermal stability properties of epoxy composite were investigated. The results indicate that the BNOTAB can homogeneously disperse into epoxy system. When the mass ratio of BNOTAB/GNP is 6:4 (total filler content is 10%), the thermal conductivity of the composites reached 0.48 W/(m•K), which is 108.7% higher than that of the neat epoxy. Meanwhile, the composite retains excellent electric-insulating property. TGA and DSC results showed that the addition of BNOTAB/GNP filler particles can improve the thermal stability of epoxy resin composites.