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Conductive carbon fillers (carbon black, carbon fiber, and synthetic graphite particles) were added to Vectra A950RX liquid crystal polymer and the axial and radial thermal conductivities were determined experimentally for each composite. The addition of Thermocarb TC-300 synthetic graphite caused the largest increase in thermal conductivity, with in-plane thermal conductivity values reaching greater than 20 W/m K which is the minimum value for use in fuel cells. Mathematical models ...
Traditionally, white LED's are made by mixing phosphor with an epoxy resin. But, the phosphor is not always evenly distributed, and the epoxy resin has a low thermal conductivity resulting in accelerated thermal aging during operation. This article studies the effects of implementing a ceramic phosphor plate with varying concentrations of magnesium oxide, and silicon dioxide. It was found that as the magnesium oxide concentration increased so did the thermal ...
In this study, various filler loadings of thin graphite sheets were added to epoxy adhesives to improve thermal conductivity. Natural graphite powder and graphite nanoflakes were used as reference fillers in the same resin, and the thermal conductivity of each filler was measured with a TPS thermal constants analyzer based on the transient plane source (TPS) method. Results showed that the graphene sheets enhanced the thermal conductivity by more than 22 ...
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)...
