The authors outline a method of enhancing the thermal properties of a paraffin phase change material through the addition of herringbone-style graphite nanofibers (HGNFs). It was found that the solid-phase thermal conductivity increased exponentially with the presence of HGNFs; however, a significant increase in the liquid-phase thermal conductivity was not observed until the concentration of HGNFs in the composite PCM reached a point above the percolation threshold. The volumetric heat ...
Recycled tyre rubber was used to replace varying fractions of limestone as filler in asphalt in order to determine the effect that the added rubber would have on the thermal and physical properties of the asphalt. The properties of interest were the penetration, soft point, and ductility of the asphalt binder, as well as the moisture sensitivity, thermal conductivity, thermal diffusivity, and volumetric thermal capacity of the asphalt mixtures. It ...
The development of higher power chips in the electronics industry has led to the requirement of high performance thermal interface materials (TIMs) due to the increased heat output by these chips. Desirable features of a high performance TIM include that the material be highly thermally conductive, and that it should have a relatively low viscosity. Companies can spend long periods of time trying to find the amount of filler content ...
Seven different types of nanocrystals were used as additives in aluminosilicate bricks to determine if this is a valid method of decreasing the thermal diffusivity of the bricks for use as plant coating in the iron and steel industries. Each type of nanocrystal was added in concentration percentages of 0.5, 1, and 2 wt. % to determine the effect of concentration on thermal transport and physical properties. It was found that all of the ...
Using the transient plane source (TPS) technique, researchers measured the thermal conductivity, thermal diffusivity and specific heat capacity of an electrically insulating ceramic material prepared from kaolin and feldspar. The electroceramic was tested at multiple temperature points to see how it affected thermal conductivity. Thermal properties were strongly affected by temperature, and the ceramic material studied had the highest thermal conductivity and thermal diffusivity at the highest temperature tested. The ...
