Abstract
Iron ore tailings which is the waste material derived from the beneficiation of iron ore was dispersed in epoxy as micro scale particle fillers. The effect of particle size and particle loading on the thermal conductivity and impact properties of the composites were then investigated experimentally. A comparison of the experimental results for the former to results obtained from existing theoretical models was also done. It was discovered that the impact resistance increased with increasing volume content of iron ore tailings from 20 vol. % with a maximum toughness of 0.098 kJm-2 recorded for composite with 300 µm at 30 vol. %. Thermal conductivity of epoxy improved with decreasing particle size while the Maxwell, Lewis and Nelson and parallel models gave reasonable predictions for epoxy filled with 212 µm at 10 vol. % and 20 vol. % contents; with least variations of 0.18 % and 1.26 %, respectively. Keywords: Composite, Epoxy, Impact, Iron ore tailings, Particle size, Particle loading, Thermal conductivity
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