Category: Hot Disk TPS
Keywords: Carbon nanotubes, CNT-oil combinations, CNTs, composites, Fillers, Hot Disk TPS 2500 S, multi-walled carbon nanotubes, multi-walled carbon nanotubes (MWNTs), MWNTs, Polymer composites, Thermal Conductivity, Transient Plane Source, Transient plane source (TPS) method
Abstract: 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 with the addition of CNTs using the Hot Disk TPS 2500S. Results were encouraging, with the thermal conductivity of the composites increasing linearly with the amount of CNTs added. A spontaneous alignment of the CNTs in liquid crystal polymer matrix caused a large increase in thermal diffusivity. The researchers concluded that CNTs are an effective filler for use in increasing the thermal conductivity of composites and improving their thermal performance.
Reference: Applied Physics A, 105:4, (2011) pp 781-788