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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)-low molecular weight polyamide (LWPA) resin. Overall, the thermal properties of the amine functionalized-MWCNTs/EP-LWPA were better than the acid-treated MWCNTs/EP-LWPA.
As nanotechnology becomes increasingly important, researchers are investigating methods to decrease the size of electronics. Carbon nanotubes (CNTs) have potential applications in nanoelectronics because of their high thermal conductivity and miniscule size. This study had many focuses, but a TPS used the transient plane source method to specifically measure the thermal conductivities of CNT-fabricated thermal pastes. Results showed that the thermal conductivities varied depending on filler content, but were comparable to commercial pastes.
Conductive polymer composites (CPCs) contain high concentrations of carbon nanotubes (CNTs) to maximize electrical conductivity. However, high nanoparticle concentrations degrade other important properties of CPCs. This study produced CPCs using ultrahigh molecular weight polyethylene (UHMWPE) fillers in place of CNTs in an attempt to maintain important physical and mechanical properties. A thermal analyzer measured the thermal conductivity of the CPC samples using the transient plane source (TPS) method. Results showed that the altered CPCs maintained the desired levels of electrical conductivity, but thermal conductivity levels did not meet the theoretical expectations, likely because UHMWPEs have a higher porosity than CNTs.
Li-ion battery electrodes are typically mixed with carbon black materials which have low thermal conductivity in high-power-density battery applications. In this study, multi-walled carbon nanotubes (MWCNTs) were added to Li-ion battery electrodes to improve thermal conductivity. A measured the thermal conductivity of the electrode samples at room temperature using the transient plane source (TPS) method. Results showed that the addition of MWCNTs enhanced the thermal conductivity of the electrodes by up to two orders of magnitude compared to the conventional mode of synthesis. The success of this research can be applied to the thermal management of commercial electrode-active products in the future.
The purpose of this this study was to graft polymer chains onto the surface of carbon nanotubes (CNTs) to examine the morphology and thermal properties of the epoxy composites in comparison to multiwalled carbon nanotubes (MWCNTs). A thermal analyzer measured the thermal conductivity of the nanocomposites using the transient plane source (TPS) technique. Results showed that the addition of Glycidyl methacrylate (GMA) to the MWCNTs/epoxy composites significantly enhanced thermal conductivity compared to the pristine MWCNTs/epoxy composites.
