Carbon fiber and magnetite (Fe3O4)-doped epoxy memory shape polymers were prepared with 2.5% volume fraction of each dopant. These materials were doped in the hope of increasing the thermal performance of the polymers. Using the Thermal Constants Analyzer, thermal conductivity, thermal diffusivity and specific heat of the doped polymers were measured. Specifically, the researchers were looking into changes exhibited near the transition temperature of the shape memory polymer of ...
The researchers used an instrument to measure the thermal properties (thermal conductivity and specific heat) of anisotropic thermally insulating foams produced by the mixing of nanocellulose, graphene oxide and sepiolite nanorods via the freeze-casting method. These anisotropic foams showed superior thermal properties when compared to expanded polystyrene (a common insulation material), and had a thermal conductivity value of 0.015 W/mK which is half the value for expanded polystyrene. Not only ...
Using the transient plane source (TPS) technique, the effect of addition of pine tree particles to styrene butadiene rubber is studied. Thermal conductivity, thermal diffusivity, specific heat capacity and density were all investigated. Varying amounts of the pine tree filler particles were added to the polymer matrix in order to form composites. Increasing amounts of the pine tree filler resulted in higher thermal conductivity and thermal diffusivity, with decreasing specific ...
The authors set out to prepare cellular vitreous carbon (CVC) foams with varying thermal and physical properties. This was accomplished by using tannin-based resin modified by different isocyanates in varying amounts. Three different experimental procedures were used to prepare foams with different physical and thermal properties. Physical properties of the foams studied include density, as well as pore volume, pore size and cell diameter. The transient plane source (TPS) technique ...
Two series of nanofluids were prepared by the researchers, using water as the carrier fluid, and Al2O3 and TiO2 as the nanoparticles; up to 6% particle volume fraction was used. The thermal conductivity and thermal diffusivity of the nanofluids were measured using the transient plane source (TPS) technique, and dynamic viscosity was also measured. The amount of nanoparticle volume fraction affected the value of thermal conductivity, but the nanoparticle cluster ...
