In this study, graphene nanoplatelets (GNP) and multi-walled carbon nanotube fillers (MWCNT) were simultaneously added to a polycarbonate matrix, in an attempt to improve thermal conductivity. Thermal conductivities of the composites were measured at room temperature. Results show that MWCNTs can improve thermal conductivity by filling gaps between GNPs. Additionally, a small amount of well dispersed MWCNTs increased thermal conductivity by 23% compared to composites containing only GNPs....
This study aimed at developing polymer-based dielectric materials with high charge-discharge efficiency and large energy density at high temperatures. A polymer nanocomposite was formed using c-BCB polymer matrix with two-dimensional hexagonal boron nitride nanosheets (BNNS). Using a transient technique, thermal conductivity was measured with a Thermal Analyzer. The incorporation of BNNS into PMMA was found to increase thermal conductivity and enhance properties of the nanocomposites....
In this study, a new type of sorption process was developed using activated carbon (AC) as a porous host to carry LiCl. A silica solution (SS) and expanded natural graphite treated with sulfuric acid (ENG-TSA) were added to increase heat transfer and mechanical strength of the composite. Thermal conductivities of the samples were measured using the Transient Plane Source (TPS) technique. Results found higher thermal conductivities directly correlated to larger ...
With a goal of wider usage of renewable energy sources that are clean and sustainable, effective technologies, such as thermal energy storage (TES), play a vital role in storing thermal energy for future use. In this study, silver nanoparticles were dispersed in paraffin wax, eicosane, as phase change material (PCM). Thermal conductivity was measured following the transient method, using a Thermal Constants Analyzer with transient plane source technique. Thermal conductivity ...
This article aims at assessing the impact of rice husk ash and volcanic ashes on the processing of porous inorganic polymers. The addition of volcanic ash or rice husk ash in porous Inorganic Polymer Composites (IPC) allows for the reduction of sodium silicate necessary, improving the Si/Al ratio. Thermal conductivity was measured using an instrument through the transient plane source method. With the addition of aluminum content and rounded ...
