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Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller

Thermally conductive and electrically insulating composites are important for the thermal management of new generation integrated and miniaturized electronic devices. A practical and eco−friendly electrostatic self−assembly method was developed to prepare boron nitride−multilayer graphene (BN−MG) hy...

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Detalles Bibliográficos
Autores principales: Deng, Bangjun, Shi, Yangyang, Zhang, Xiaowen, Ma, Wenshi, Liu, Hai, Gong, Chunli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9318269/
https://www.ncbi.nlm.nih.gov/pubmed/35889561
http://dx.doi.org/10.3390/nano12142335
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author Deng, Bangjun
Shi, Yangyang
Zhang, Xiaowen
Ma, Wenshi
Liu, Hai
Gong, Chunli
author_facet Deng, Bangjun
Shi, Yangyang
Zhang, Xiaowen
Ma, Wenshi
Liu, Hai
Gong, Chunli
author_sort Deng, Bangjun
collection PubMed
description Thermally conductive and electrically insulating composites are important for the thermal management of new generation integrated and miniaturized electronic devices. A practical and eco−friendly electrostatic self−assembly method was developed to prepare boron nitride−multilayer graphene (BN−MG) hybrid nanosheets. Then, BN−MG was filled into silicone rubber (SR) to fabricate BN−MG/SR composites. Compared with MG/SR composites with the same filler loadings, BN−MG/SR composites exhibit dramatically enhanced electrical insulation properties while still maintaining excellent thermal conductivity. The BN−MG/SR with 10 wt.% filler loading shows a thermal conductivity of 0.69 W·m(−1)·K(−1), which is 475% higher than that of SR (0.12 W·m(−1)·K(−1)) and only 9.2% lower than that of MG/SR (0.76 W·m(−1)·K(−1)). More importantly, owing to the electron blocking effect of BN, the electron transport among MG sheets is greatly decreased, thus contributing to the high−volume resistivity of 4 × 10(11) Ω cm for BN−MG/SR (10 wt.%), which is fourorders higher than that of MG/SR (2 × 10(7) Ω·cm). The development of BN−MG/SR composites with synergetic properties of high thermal conductivity and satisfactory electrical insulation is supposed to be a promising candidate for practical application in the electronic packaging field.
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spelling pubmed-93182692022-07-27 Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller Deng, Bangjun Shi, Yangyang Zhang, Xiaowen Ma, Wenshi Liu, Hai Gong, Chunli Nanomaterials (Basel) Article Thermally conductive and electrically insulating composites are important for the thermal management of new generation integrated and miniaturized electronic devices. A practical and eco−friendly electrostatic self−assembly method was developed to prepare boron nitride−multilayer graphene (BN−MG) hybrid nanosheets. Then, BN−MG was filled into silicone rubber (SR) to fabricate BN−MG/SR composites. Compared with MG/SR composites with the same filler loadings, BN−MG/SR composites exhibit dramatically enhanced electrical insulation properties while still maintaining excellent thermal conductivity. The BN−MG/SR with 10 wt.% filler loading shows a thermal conductivity of 0.69 W·m(−1)·K(−1), which is 475% higher than that of SR (0.12 W·m(−1)·K(−1)) and only 9.2% lower than that of MG/SR (0.76 W·m(−1)·K(−1)). More importantly, owing to the electron blocking effect of BN, the electron transport among MG sheets is greatly decreased, thus contributing to the high−volume resistivity of 4 × 10(11) Ω cm for BN−MG/SR (10 wt.%), which is fourorders higher than that of MG/SR (2 × 10(7) Ω·cm). The development of BN−MG/SR composites with synergetic properties of high thermal conductivity and satisfactory electrical insulation is supposed to be a promising candidate for practical application in the electronic packaging field. MDPI 2022-07-07 /pmc/articles/PMC9318269/ /pubmed/35889561 http://dx.doi.org/10.3390/nano12142335 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Deng, Bangjun
Shi, Yangyang
Zhang, Xiaowen
Ma, Wenshi
Liu, Hai
Gong, Chunli
Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title_full Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title_fullStr Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title_full_unstemmed Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title_short Thermally Conductive and Electrically Insulated Silicone Rubber Composites Incorporated with Boron Nitride−Multilayer Graphene Hybrid Nanofiller
title_sort thermally conductive and electrically insulated silicone rubber composites incorporated with boron nitride−multilayer graphene hybrid nanofiller
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9318269/
https://www.ncbi.nlm.nih.gov/pubmed/35889561
http://dx.doi.org/10.3390/nano12142335
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