Polypropylene (PP) foams are commercially manufactured in four ways, with each method producing different characteristics. The aim of this paper was to examine the properties of each PP-based foam and compare their thermal behaviors and conductivities. A thermal constant analyzer was used to measure the thermal conductivity of the foam samples with the transient plane source (TPS) technique. Results showed that thermal conductivity varied for each production method, but density ...
Thermophysical and structural properties of sintered ore particles (SOPs) were determined to expand upon the little documented information there is regarding the properties of these materials. In addition to this, a fractal model was also developed for the prediction of thermal conductivity in SOPs as a function of porosity. The experimental results revealed that the specific heat capacity increased with increasing temperature and that the thermal conductivity decreased with increasing ...
The potential of the transient plane source (TPS) technique for the testing of thermo-physical properties of hydrogen storage materials is evaluated. To do this, stacks of interleaved samples of stainless steel 316L, Teflon, and Lexan were tested for thermal conductivity using the anisotropic module in the TPS software. It was determined that the axial and radial thermal conductivities were as expected with the exception of the presence of some deviation ...
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 ...
In order to test the protective capabilities of body armor, a clay box is placed behind the armor during testing and the penetration depth into the clay is measured after firing. Procedures for the preparation of the Plastilina clay used to make these boxes require that the clay be pre-conditioned in an oven prior to testing. The objectives of this work were to determine if the cooling of the clay ...
