Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated multi-walled carbon nanotubes

Wei Cui; Feipeng Du; Jinchao Zhao; Wei Zhang; Yingkui Yang; Xiaolin Xie; Yiu Wing Mai

doi:10.1016/j.carbon.2010.09.047

Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated multi-walled carbon nanotubes

Wei Cui, Feipeng Du, Jinchao Zhao, Wei Zhang, Yingkui Yang, Xiaolin Xie, Yiu Wing Mai

Research output: Journal article publication › Journal article › Academic research › peer-review

279 Citations (Scopus)

Abstract

Silica-coated multi-walled carbon nanotubes (MWCNT@SiO₂) were synthesized by a sol-gel method and then incorporated into an epoxy matrix. The less stiff silica intermediate shell on the MWCNTs not only alleviates the modulus mismatch between the stiff MWCNTs and the soft epoxy, but also improves the interaction between them. The thermal conductivities of the epoxy/MWCNT@SiO₂ composites increase by 51% and 67% at low filler loadings of 0.5 wt.% and 1 wt.%, respectively. At the same time, the silica shell retains the high electrical resistivity of these composites.

Original language	English
Pages (from-to)	495-500
Number of pages	6
Journal	Carbon
Volume	49
Issue number	2
DOIs	https://doi.org/10.1016/j.carbon.2010.09.047
Publication status	Published - Feb 2011
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1016/j.carbon.2010.09.047

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abstract = "Silica-coated multi-walled carbon nanotubes (MWCNT@SiO2) were synthesized by a sol-gel method and then incorporated into an epoxy matrix. The less stiff silica intermediate shell on the MWCNTs not only alleviates the modulus mismatch between the stiff MWCNTs and the soft epoxy, but also improves the interaction between them. The thermal conductivities of the epoxy/MWCNT@SiO2 composites increase by 51% and 67% at low filler loadings of 0.5 wt.% and 1 wt.%, respectively. At the same time, the silica shell retains the high electrical resistivity of these composites.",

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AU - Cui, Wei

AU - Du, Feipeng

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AU - Zhang, Wei

AU - Yang, Yingkui

AU - Xie, Xiaolin

AU - Mai, Yiu Wing

PY - 2011/2

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AB - Silica-coated multi-walled carbon nanotubes (MWCNT@SiO2) were synthesized by a sol-gel method and then incorporated into an epoxy matrix. The less stiff silica intermediate shell on the MWCNTs not only alleviates the modulus mismatch between the stiff MWCNTs and the soft epoxy, but also improves the interaction between them. The thermal conductivities of the epoxy/MWCNT@SiO2 composites increase by 51% and 67% at low filler loadings of 0.5 wt.% and 1 wt.%, respectively. At the same time, the silica shell retains the high electrical resistivity of these composites.

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Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated multi-walled carbon nanotubes

Abstract

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