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A comparative study on the effect of carbon fillers on electrical and thermal conductivity of a cyanate ester resin

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journal contribution
posted on 11.05.2017 by Xiao Wang, Yuntao Zhao, Jie Jin, Mo Song
Carbon fillers including multi-walled carbon nanotubes (MWCNTs), carbon black (CB) and graphite were introduced in a cyanate ester (CE) resin, respectively. The effects of the fillers on the electrical and thermal conductivity of the resin were measured and analyzed based on the microscopic observations. MWCNTs, CB and graphite exhibited percolation threshold at 0.1 wt%, 0.5 wt% and 10 wt%, respectively. The maximal electrical conductivity of the composites was 1.08 S/cm, 9.94 × 10−3 S/cm and 1.70 × 10−5 S/cm. MWCNTs showed the best enhancement on the electrical conductivity. The thermal behavior of the composites was analyzed by calorimetry method. Incorporation of MWCNTs, CB and graphite increased the thermal conductivity of CE resin by 90%, 15% and 92%, respectively. Theoretical models were introduced to correlate the thermal conductivity of the CE/MWCNTs composite. The interfacial thermal resistance between CE resin and MWCNTs was 8 × 10−8 m2K/W and the straightness ratio was 0.2. The MWCNTs were seriously entangled and agglomerated. Simulation results revealed that thermal conductivity of the CE/MWCNTs composites can be substantially elevated by increasing the straightness ratio and/or filler content of MWCNTs.

Funding

This work was supported by the National Natural Science Foundation of China [grant number 51503205]; and the Chinese Academy of Sciences [2015.90] “Light of West China” Program.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Polymer Testing

Citation

WANG, X. ... et al, 2017. A comparative study on the effect of carbon fillers on electrical and thermal conductivity of a cyanate ester resin. Polymer Testing, 60, pp. 293–298.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

10/04/2017

Publication date

2017

Notes

This paper was accepted for publication in the journal Polymer Testings and the definitive published version is available at https://doi.org/10.1016/j.polymertesting.2017.04.013

ISSN

0142-9418

Language

en

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