Effect of the shape and size of conducting particles on the percolation cluster formation in a ceramic composition

Dovzhenko, A. Yu.; Bunin, V. A.

doi:10.1134/1.1607481

Cited by 4 publications

(1 citation statement)

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“…7 Fillers that are non-spherical are subject to orientation during processing such as injection moulding and to some extent compression moulding that tends to produce materials with anisotropic conductivity. 8,9 Chemical properties such as the surface energies of the matrix and filler have a role to play in electrical/ thermal conductivity.…”

Section: Electrical/thermalmentioning

confidence: 99%

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

Greenwood

Thring

Chen

2014

Proceedings of the Institution of Mechanical Engineers, Part L:

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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 were 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 were limited and the thermal conductivity modelling produced good fits with R 2 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.

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Section: Electrical/thermalmentioning

confidence: 99%