Polystyrene/multi-walled carbon nanotube (PS/MWCNT) nanocomposite foams were prepared in order to determine if these foams exhibited a reduced thermal conductivity in comparison to pristine polystyrene foam. The thermal conductivity of foams can be broken down into three modes of conduction: gas conductivity, solid conductivity, and radiative conductivity. The PS/MWCNT foams had decreased gas and radiative conductivities in comparison to the pristine PS foam; however, the solid conductivity ...
The authors prepared a series of carbon nanotube (CNT) nanorefrigerants with varying size and amount of nanotubes to determine how these properties affect thermal conductivity. A TPS Instrument was used to measure thermal conductivity of the nanorefrigerants; R113 was used as a host nanorefrigerant. It was determined that higher concentrations of smaller diameter CNTs results in higher nanofrigerant thermal conductivity. A few theoretical models were also used to compare to ...
In this paper, a thermally conductive insulated inorganic nanolayer of AlO(OH) was coated onto the surface of multi-walled carbon nanotubes (MWCNTs) to create a novel thermally conductive material. The coating of MWCNTs with this inorganic layer can effectively avoid the formation of electrically conductive networks in the Pi matrix and provides excellent thermal (conductivity) properties....
Ni-coated single-walled carbon nanotubes (SWNTs) were dispersed in four fluids (of varying viscosities) to create four different nanofluids. Due to the magnetic properties of the coated nanotubes the researchers induced a magnetic field to increase the thermal conductivity of the nanofluids. The increase in thermal conductivity was due to the alignment of the carbon nanotubes into chains due to the magnetic field. A Thermal Constants Analyzer was used to measure ...
Nanocomposites were prepared by the mixing of multi-walled carbon nanotubes (MWCNTs) with nitrile and hydrogenated nitrile elastomers (NBR and HNBR). A variety of methods including TEM, SEM, and XRD were used in order to investigate the morphology of the nanocomposites. Many mechanical properties of the nanocomposites were measured and reported. A machine was used to measure the thermal properties of the synthesized nanocomposites....
