Submit version.pdf (2.47 MB)
Download file

Material property models for polyethylene-based conductive blends suitable for PEM fuel cell bipolar plates

Download (2.47 MB)
journal contribution
posted on 21.04.2016, 12:17 by Paul S. Greenwood, Rob Thring, Rui ChenRui Chen
Electrical and thermal conductivity models from Mamunya et al and Kerner’s equation for elastic and flexural modulus have been applied to experimental data to assess model accuracies. Experimental data was gained from a previous study where polyethylene and carbon black, graphite and magnetite composites produced by injection and compression moulding were tested. The electrical conductivity modelling gave accurate fits to the data, though available data was limited and the thermal conductivity modelling produced good fits with R2 values greater than 0.93. The electrical and thermal model exponents were tuned for best fit and used to compare the modelling results with the literature and gain information about conduction mechanisms such as tunnelling and links, nodes and blobs and variations in local filler concentrations. A modified Kerner’s equation to effectively allow for filler type and variations in composite processing was used to improve upon the original equation which modelled modulus behaviour based on the pure matrix. The new equation proved to be a better predictor of elastic modulus than flexural modulus.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS

Volume

230

Issue

1

Pages

131 - 141 (11)

Citation

GREENWOOD, P.S., THRING, R.H. and CHEN, R., 2016. Material property models for polyethylene-based conductive blends suitable for PEM fuel cell bipolar plates. Proceedings of the Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applications, 230(1), pp. 131-141.

Publisher

© Institution of Mechanical Engineers

Version

SMUR (Submitted Manuscript Under Review)

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/

Publication date

2016

Notes

This paper was accepted for publication in the journal Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications and the definitive published version is available at: http://dx.doi.org/10.1177/1464420714550192

ISSN

1464-4207

Language

en