Enhanced thermal conductivity of graphene nanoplatelets epoxy composites
Journal article, 2017

This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. Efficient heat dissipation from modern electronic devices is a key issue for their proper performance. An important role in the assembly of electronic devices is played by polymers, due to their simple application and easiness of processing. The thermal conductivity of pure polymers is relatively low and addition of thermally conductive particles into polymer matrix is the method to enhance the overall thermal conductivity of the composite. The aim of the presented work is to examine a possibility of increasing the thermal conductivity of the filled epoxy resin systems, applicable for electrical insulation, by the use of composites filled with graphene nanoplatelets. It is remarkable that the addition of only 4 wt.% of graphene could lead to 132 % increase in thermal conductivity. In this study, several new aspects of graphene composites such as sedimentation effects or temperature dependence of thermal conductivity have been presented. The thermal conductivity results were also compared with the newest model. The obtained results show potential for application of the graphene nanocomposites for electrical insulation with enhanced thermal conductivity. This paper also presents and discusses the unique temperature dependencies of thermal conductivity in a wide temperature range, significant for full understanding thermal transport mechanisms.

Epoxy resin

Graphene nanoplatelets

Thermal conductivity

High-shear exfoliation

Electrical resistivity

Author

Lukasz Jarosinski

AGH University of Science and Technology

Andrzej Rybak

ABB Group, Poland

Karolina Gaska

AGH University of Science and Technology

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Grzegorz Kmita

ABB Group, Poland

Renata Porebska

ABB Group, Poland

Czeslaw Kapusta

AGH University of Science and Technology

Materials Science-Poland

2083-1331 (ISSN) 2083-134X (eISSN)

Vol. 35 2 382-389

Subject Categories

Polymer Chemistry

Ceramics

Textile, Rubber and Polymeric Materials

DOI

10.1515/msp-2017-0028

More information

Latest update

10/7/2019