Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles
Polymer composites with high thermal conductivity have promising applications for the thermal management of modern electronic devices. Here, a novel strategy is proposed to enhance the thermal conductivity of epoxy composites by employing a hybrid graphene and boron nitride nanoparticle (GBN). In th...
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doaj-d3db024316c6439d88a22feece334d242020-11-25T02:36:39ZengElsevierMaterials & Design0264-12752020-06-01191Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticlesJunwen Ren0Qihan Li1Lei Yan2Lichuan Jia3Xiaolong Huang4Lihua Zhao5Qichao Ran6Mingli Fu7College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Aviation Engineering, Civil Aviation Flight University of China, Guanghan 618307, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, China; Corresponding authors.College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China; Corresponding authors.Electric Power Research Institute, China Southern Power Grid, Guangzhou 510670, ChinaPolymer composites with high thermal conductivity have promising applications for the thermal management of modern electronic devices. Here, a novel strategy is proposed to enhance the thermal conductivity of epoxy composites by employing a hybrid graphene and boron nitride nanoparticle (GBN). In the GBN, boron nitride nanosheets (BNNSs) tightly adsorb onto the surface of graphene via π-π interactions, and act as bridges for conveying phonons as well as barriers for electrons transporting between adjacent graphene particles. The thermal conductivity and dielectric properties of composites containing GBN are then systematically investigated. The thermal conductivity is significantly enhanced (~140%) in GBN/epoxy composites containing only 5 wt% of GBN. High electrical resistivity (3.05 × 1012 Ω·cm) and low dielectric loss (tanδ < 0.08) are also observed. This study provides important insights into the design and fabrication of highly thermally conductive and electrically insulating composites.http://www.sciencedirect.com/science/article/pii/S0264127520301970CompositesThermal conductivityBoron nitride nanosheetsGraphene |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Junwen Ren Qihan Li Lei Yan Lichuan Jia Xiaolong Huang Lihua Zhao Qichao Ran Mingli Fu |
spellingShingle |
Junwen Ren Qihan Li Lei Yan Lichuan Jia Xiaolong Huang Lihua Zhao Qichao Ran Mingli Fu Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles Materials & Design Composites Thermal conductivity Boron nitride nanosheets Graphene |
author_facet |
Junwen Ren Qihan Li Lei Yan Lichuan Jia Xiaolong Huang Lihua Zhao Qichao Ran Mingli Fu |
author_sort |
Junwen Ren |
title |
Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
title_short |
Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
title_full |
Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
title_fullStr |
Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
title_full_unstemmed |
Enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
title_sort |
enhanced thermal conductivity of epoxy composites by introducing graphene@boron nitride nanosheets hybrid nanoparticles |
publisher |
Elsevier |
series |
Materials & Design |
issn |
0264-1275 |
publishDate |
2020-06-01 |
description |
Polymer composites with high thermal conductivity have promising applications for the thermal management of modern electronic devices. Here, a novel strategy is proposed to enhance the thermal conductivity of epoxy composites by employing a hybrid graphene and boron nitride nanoparticle (GBN). In the GBN, boron nitride nanosheets (BNNSs) tightly adsorb onto the surface of graphene via π-π interactions, and act as bridges for conveying phonons as well as barriers for electrons transporting between adjacent graphene particles. The thermal conductivity and dielectric properties of composites containing GBN are then systematically investigated. The thermal conductivity is significantly enhanced (~140%) in GBN/epoxy composites containing only 5 wt% of GBN. High electrical resistivity (3.05 × 1012 Ω·cm) and low dielectric loss (tanδ < 0.08) are also observed. This study provides important insights into the design and fabrication of highly thermally conductive and electrically insulating composites. |
topic |
Composites Thermal conductivity Boron nitride nanosheets Graphene |
url |
http://www.sciencedirect.com/science/article/pii/S0264127520301970 |
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