Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide

Polymer composites have attracted considerable attention due to their easy processability, low cost, and various applications. However, intrinsic poor thermal, electrical properties of polymer always have been the bottlenecks of multifunctional technical development. In this study, fabrication of lo...

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Autores principales:	Wondu Lee, Jooheon Kim
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Polymer-matrix composites (PMCs) 3D network Silane treatment Thermal conductivity Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/5f2216d140074c0ca64a5a29b172faf4
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spelling	oai:doaj.org-article:5f2216d140074c0ca64a5a29b172faf42021-11-14T04:28:06ZImproved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide0142-941810.1016/j.polymertesting.2021.107402https://doaj.org/article/5f2216d140074c0ca64a5a29b172faf42021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941821003469https://doaj.org/toc/0142-9418Polymer composites have attracted considerable attention due to their easy processability, low cost, and various applications. However, intrinsic poor thermal, electrical properties of polymer always have been the bottlenecks of multifunctional technical development. In this study, fabrication of low dielectric loss and highly thermal conductive composites was investigated through hybridization of silane-treated reduced graphene oxide (rGO) and boron nitride (BN), sintering of silver nanoparticles (AgNPs) on the surface of two-dimensional fillers, and infiltration of poly(dimethylsiloxane) (PDMS). The well-ordered filler structure was achieved by aligned BN on the rGO surface. The aligned PDMS/BNA-SrGOA composites, which form heat transfer paths along the filler orientation of two-dimensional BN and GO, exhibited high thermal conductivities of 10.91 and 1.27 W/mK according to in-plane and through-plane direction in a 1:2 ratio of BN and rGO. In addition, the dielectric loss was decreased by interaction with BN compared to that with only the rGO composites. Finally, the treatment of a silane coupling agent on the rGO surface reduced the interface resistivity between the filler and matrix, which reinforced the thermal, electrical, mechanical properties.Wondu LeeJooheon KimElsevierarticlePolymer-matrix composites (PMCs)3D networkSilane treatmentThermal conductivityPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 104, Iss , Pp 107402- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Polymer-matrix composites (PMCs) 3D network Silane treatment Thermal conductivity Polymers and polymer manufacture TP1080-1185
spellingShingle	Polymer-matrix composites (PMCs) 3D network Silane treatment Thermal conductivity Polymers and polymer manufacture TP1080-1185 Wondu Lee Jooheon Kim Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
description	Polymer composites have attracted considerable attention due to their easy processability, low cost, and various applications. However, intrinsic poor thermal, electrical properties of polymer always have been the bottlenecks of multifunctional technical development. In this study, fabrication of low dielectric loss and highly thermal conductive composites was investigated through hybridization of silane-treated reduced graphene oxide (rGO) and boron nitride (BN), sintering of silver nanoparticles (AgNPs) on the surface of two-dimensional fillers, and infiltration of poly(dimethylsiloxane) (PDMS). The well-ordered filler structure was achieved by aligned BN on the rGO surface. The aligned PDMS/BNA-SrGOA composites, which form heat transfer paths along the filler orientation of two-dimensional BN and GO, exhibited high thermal conductivities of 10.91 and 1.27 W/mK according to in-plane and through-plane direction in a 1:2 ratio of BN and rGO. In addition, the dielectric loss was decreased by interaction with BN compared to that with only the rGO composites. Finally, the treatment of a silane coupling agent on the rGO surface reduced the interface resistivity between the filler and matrix, which reinforced the thermal, electrical, mechanical properties.
format	article
author	Wondu Lee Jooheon Kim
author_facet	Wondu Lee Jooheon Kim
author_sort	Wondu Lee
title	Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
title_short	Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
title_full	Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
title_fullStr	Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
title_full_unstemmed	Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
title_sort	improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5f2216d140074c0ca64a5a29b172faf4
work_keys_str_mv	AT wondulee improvedthermalconductivityofpolydimethylsiloxanecompositesfilledwithwellalignedhybridfillernetworkofboronnitrideandgrapheneoxide AT jooheonkim improvedthermalconductivityofpolydimethylsiloxanecompositesfilledwithwellalignedhybridfillernetworkofboronnitrideandgrapheneoxide
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Improved thermal conductivity of poly(dimethylsiloxane) composites filled with well-aligned hybrid filler network of boron nitride and graphene oxide

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