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Silica coating onto graphene for improving thermal conductivity and electrical insulation of graphene/polydimethylsiloxane nanocomposites
Shen, Chaoxuan; Wang, Han; Zhang, Tengxin; Zeng, You
2019
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:1Pages:36-43
AbstractGraphene possess extremely high thermal conductivity, and they have been regarded as prominent candidates to be used in thermal management of electronic devices. However, addition of graphene inevitably causes dramatic decrease in electrical insulation, which is generally unacceptable for thermal interface materials (TIMs) in real electronic industry. Developing graphene-based nanocomposites with high thermal conductivity and satisfactory electrical insulation is still a challenging issue. In this study, we developed a novel hybrid nanocomposite by incorporating silica-coated graphene nanoplatelets (Silica@GNPs) with polydimethylsiloxane (PDMS) matrix. The obtained Silica@GNP/PDMS composites showed satisfactory electrical insulation (electrical resistivity of over 10(13) Omega cm) and high thermal conductivity of 0.497 W m(-1) K-1, increasing by 155% compared with that of neat PDMS, even higher than that of GNP/PDMS composites. Such high thermal conductivity and satisfactory electrical insulation is mainly attributed to the insulating silica-coating, good compatibility between components, strong interfacial bonding, uniform dispersion, and high-efficiency heat transport pathways. There is great potential for the Silica@GNP/PDMS composites to be used as high-performance TIMs in electronic industry. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordGraphene Silica coating Nanocomposites Thermal conductivity Electrical insulations
Indexed BySCI
Language英语
WOS IDWOS:000449263900006
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81513
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Shen, Chaoxuan,Wang, Han,Zhang, Tengxin,et al. Silica coating onto graphene for improving thermal conductivity and electrical insulation of graphene/polydimethylsiloxane nanocomposites[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(1):36-43.
APA Shen, Chaoxuan,Wang, Han,Zhang, Tengxin,&Zeng, You.(2019).Silica coating onto graphene for improving thermal conductivity and electrical insulation of graphene/polydimethylsiloxane nanocomposites.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(1),36-43.
MLA Shen, Chaoxuan,et al."Silica coating onto graphene for improving thermal conductivity and electrical insulation of graphene/polydimethylsiloxane nanocomposites".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.1(2019):36-43.
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