Synergistic improvement of thermal conductivity of thermoplastic composites with mixed boron nitride and multi-walled carbon nanotube fillers

The thermal conductivity of composites with a polyphenylene sulfide (PPS) matrix and a mixture of boron nitride (BN) power and multi-wall carbon nanotube (MWCNT) fillers was investigated. Synergistic improvement in thermal conductivity of the composite was observed due to the generation of three-dim...

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Bibliographic Details
Published in:Carbon (New York) 2012-11, Vol.50 (13), p.4830-4838
Main Authors: Pak, Seong Yeol, Kim, Hyung Min, Kim, Seong Yun, Youn, Jae Ryoun
Format: Article
Language:English
Subjects:
Boron nitride
Chemistry
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fillers
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Heat transfer
Materials science
Multi wall carbon nanotubes
Physics
Polymer matrix composites
Polyphenylene sulfides
Specific materials
Surface physical chemistry
Thermal conductivity
Three dimensional
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Summary:The thermal conductivity of composites with a polyphenylene sulfide (PPS) matrix and a mixture of boron nitride (BN) power and multi-wall carbon nanotube (MWCNT) fillers was investigated. Synergistic improvement in thermal conductivity of the composite was observed due to the generation of three-dimensional thermal transfer pathways between the BN and MWCNT. The improvement strongly depended on surface treatment of the MWCNTs, such as hydrogen peroxide and acid treatments. The thermal conductivity of the composite was affected by the interaction and interfacial thermal resistance between the PPS matrix and the MWCNTs. The maximum thermal conductivity achieved was 1.74W/mK for a composite that was pelletizable, injection moldable, and thermally conductive with low electrical conductivity and good mechanical properties.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2012.06.009