Join us at the International Thermal Conductivity Conference (ITCC) and the International Thermal Expansion Symposium (ITES).
Research found tannins have been successful as monomers to produce organic foams with superior properties for thermal insulation. Norway spruce (Picea abies) tannins were extracted and used to prepare tannin/furanic foams. Thermal conductivity measurements were taken by transient plane source method. Thermal conductivity performance improved with higher closed-cell content in the foam....
This article investigated new macro-cellular carbons, called carbon meringues, formed by whipping an aqueous solution of tannin until liquid foam is obtained. Carbon meringues were fully investigated, and thermal conductivity was analyzed using a transient plane source method. Thermal conductivity of carbon meringues was found to be slightly higher than that of tannin-based CVC foams of low density. Carbon meringues maintained higher mechanical strength in the same range of density....
Porous monoliths, often referred to as polymerised High Internal Phase Emulsions (polyHIPEs), are materials made of polymers that have applications ranging from chemical engineering to biomedicine. In this paper, a TPS instrument measured the thermal conductivity of tannin-based monoliths with the transient plane source (TPS) technique. Results showed that as the porosity of the polyHIPEs increased, the thermal conductivity decreased linearly, a characteristic that could be used for applications in ...
This article discusses the creation and characterization of albumin based rigid and elastic foams. These foams were created using formaldehyde as the hardener for the protein, while camphor was used as the plasticizer. Crosslinking was carried out using a traditional or microwave oven. Samples differed in the amount of water, formaldehyde, and camphor added, and in the amount of time that they spent in the oven. The thermal conductivity was ...
Polymeric tannin/furanic foams fortified with polyurethane (PUR) and 4,4’ diphenylmethane diisocyanate (pMDI) were prepared. The thermo-physical and mechanical properties of the produced foams were investigated experimentally. It was found that since there were a number of active isocyanate groups on the PUR that was used, there was no difference in adding PUR or pMDI to the foams, and so only the results for pMDI were presented. It was found that ...
