In this study, a modification to the transient hot-strip (THS) method demonstrated that the thermal properties of two different materials can be measured simultaneously when placed on either side of the hot-strip sensor. Three experiments tested samples of gabbro with a regular THS sensor, a wood sensor, and a fused quartz sensor, respectively. The accuracy of the results was better than 3% between each measurement. Despite a large difference in the ...
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 ...
Non-isocyanate polyurethane (NIPU) have the potential to replace polyurethane (UP) foams in the future. This study attempts to synthesize non-isocyanate polyurethane (NIPU) at room temperature for the first time. A TPS instrument measured the thermal conductivity of the foams using the transient plane source (TPS) method. Results showed that foams prepared with 10 or 20% of PPOBC640 had the highest thermal conductivities. NIPU foams had a slightly higher thermal conductivity than PU ...
Understanding the thermal properties of soils is important for applications in agronomy and engineering. The aim of this study was to examine the thermal properties of volcanically-derived Chilean soils using the Transient Plane Source (TPS) method. Results showed that thermal conductivity decreased with water content and with increasing amounts of organic carbon. Alternatively, soils with increased concentrations of crystalline compounds exhibited higher thermal conductivities. Results of this paper conclude that ...
In this study, a sensor measured the thermal conductivity of molten indium antimonide (InSb) using the transient plane source (TPS) method. The measurements were taken during a 10 m short-duration microgravity drop. Results showed that the thermal conductivities of molten InSb were higher in normal gravity than in microgravity....
