In this paper, the physical characteristics of concretes containing three types of aggregates were examined under high temperatures. A thermal analyzer measured the thermal conductivity of the concrete samples using the transient plane source (TPS) method. Results showed that the thermal conductivity of well-crystallized concretes had a stronger inverse relationship with temperature than the poorly-crystallized samples did. As well, high-performance concretes retained their thermally conductive properties better than normal concretes....
This paper examined the synthesis of hyperbranched polymers (HBPs) and how their hydroxyl end groups help form networks in tannin-based foams. A thermal analyzer (TPS) measured the thermal conductivity of the foam samples using the transient plane source (TPS) method. Results showed that modified foams retained their thermal insulation properties even with the addition of oligomeric precursors. This gives good indication that the addition of hydroxyl-terminated oligomeric precursors to tannin ...
Phase change materials have supercooling characteristics that would benefit long-term latent heat thermal energy storage. This paper studied the physical and chemical properties associated with the growth rate of crystallization in disodium hydrogenphosphate dodecahydrate (DHD) as a function of a degree of supercooling. The transient plane source (TPS) technique was used to measure the thermal conductivity of the DHD samples. Results of the thermal conductivity test showed that the solid ...
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 ...
Polyflavenoid tannin-furanic rigid foams have widespread industrial applications. The chemical and physical properties of the five main tannin-based foams are tested and compared in this paper. A TPS instrument measured the thermal conductivity of the tannin-based foams using the transient plane source (TPS) method. Results showed that the tannin foam containing formaldehyde and a low-boiling blowing agent (STD) had the highest thermal conductivity, and the foams without formaldehyde and surfactant (...
