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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/21009

Title: Material property models for polyethylene-based conductive blends suitable for PEM fuel cell bipolar plates
Authors: Greenwood, Paul S.
Thring, R.H.
Chen, Rui
Keywords: Materials modelling
bipolar plate
carbon black
fuel cell
Issue Date: 2016
Publisher: © Institution of Mechanical Engineers
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.
Abstract: 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.
Description: 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
Version: Submitted for publication
DOI: 10.1177/1464420714550192
URI: https://dspace.lboro.ac.uk/2134/21009
Publisher Link: http://dx.doi.org/10.1177/1464420714550192
ISSN: 1464-4207
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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