This article investigated the effects of incorporating silica layers into polypropylene nanocomposites. The influence of the silica layers on the thermal conductivity of the material is compared to the influence of other fillers to determine which is superior. The authors found that particle size and number affect the thermal conductivity in addition to content percentage. The silica layers produced a more impressive increase in thermal conductivity than other fillers on ...
This article investigated the thermal properties of methane hydrates to understand their potential in energy applications and how they could affect the climate. The thermal analyzer was used in a high pressure situation to accurately measure the thermal properties of the methane hydrates. This system was modified by the researchers in order to perform in the high pressure situation. Additionally, an uncompacted methane hydrate sample was created in the sample ...
Single phase, orthohombic structured Ca0.98Bi0.02Mn1−xSixO3−delta (x = 0.00, 0.02 and 0.03) samples were prepared using solid state reaction. The authors investigated whether they could improve the thermoelectric properties of the product by substituting calcium and manganese with bismuth and silicon, respectively. The resulting products had an increase in electrical resistivity and thermopower and a decrease in thermal conductivity as the amount of silicon added increased. Magnetic moments decreased in the ...
The Transient Plane Source thermal constants analyzer stands out in the field of thermal conductivity testing equipment due to its ability to measure anisotropic materials. In this paper, the mathematical derivation of the equation used in the anisotropic software module of the TPS is used to calculate the thermal conductivity and thermal diffusivity of three Italian tree species; larch, oak, and spruce. Axial thermal conductivity was found to be much ...
This article focused on determining the extinction coefficient of polyolefin foams. A combination of experimental and theoretical methods were used to accomplish this goal. Samples differed from each other in terms of thickness, chemical composition, colour, density, and structural characteristics. Fourier transform infrared spectroscopy was used to measure transmittance spectra. Thermal conductivity of the foams was also measured. The researchers concluded that cell size was the primary factor affecting the ...
