Multi-walled carbon nanotube (MWCNT)/poly (methyl methacrylate) composites were prepared and their mechanical and physical properties were examined. An amphiphilic copolymer was used to aid in dispersing the MWCNTs throughout the composite. It was found that the use of this copolymer resulted in a good dispersal of the MWCNTs without drastically affecting the molecular weights of the composites, so it was concluded that the observed improvements in mechanical properties of ...
This paper proposes conducting carbon aerogels, composed of graphene and multi-walled carbon nanotubes, as an option for a thermoelectric material. The researchers found that this combination of materials increased the electrical conductivity and the Seebeck coefficient due to bridging effects, and decreased the thermal conductivity through high porosity and a uniquely structured 3-D skeleton. Atomic force microscopy and X-ray diffraction were used to quantify the physical structure of the aerogels. ...
Carbon nanotubes (CNTs) have extremely high thermal conductivity and can raise the thermal conductivity of a polymer matrix when used as an additive. Previous research has shown that random CNT orientation in polymer matrices gives a much lower thermal conductivity value than a specific alignment direction. This project tested the thermal conductivity of oils and polymers. Results were encouraging, with the thermal conductivity of the composites increasing linearly with the ...
This study is investigating how the thermal conductivity of a PMMA polymer filled with multi walled carbon nano tubes (MWNT) changes with temperature, and wt % MWNT. Also, the series, parallel, Lewis/Neilson and empirical formula models were used to quantify how well the measured values correlate with the calculated values. The thermal conductivity was measured with a transient plane source (TPS) method. The thermal conductivity of the polymer increased with ...
The purpose of this study was to develop adhesive epoxy resins that used multiwalled carbon nanotubes (MWCNTs) to enhance thermal conductivity and dispersion in the polymer matrix. An analyzer measured the thermal conductivity of the MWCNTs-based epoxy adhesives using the transient plane source (TPS) method. Results showed that the addition of MWCNTs improved the coefficient of thermal conductivity of the epoxy resin in comparison to pristine epoxy and epoxy (EP)...
