Using few-layer graphene (FLG) flakes the authors are able to create graphene composites (where graphene is a filler) and measure the thermal properties of these composites using a laser flash technique. In some cases, the thermal conductivity was increased by ten times while only using 5 vol.% graphene as filler. Graphene would make a good filler for thermal interface materials....
This study looked at the use of two different fillers to improve the thermal properties of an epoxy resin. The two fillers were multi-walled carbon nanotubes (MWCNTs) and aluminum nitride (AlN). Through the use of poly(glycidyl methacrylate) (PGMA) and a zirconate coupling agent the MWCNTs and AlN particles respectively were added to the epoxy resin. Through the use of 1 vol.% MWCNT and 25 vol.% AlN the researchers were able to ...
Five different glasses were created in the present study with varying compositional ratios in a CaO-B2O2-SiO2 (CBS) System and the thermal and dielectric properties of these glasses were studied. A glass was found that had high thermal conductivity and promising dielectric properties, with a low sintering temperature that allows for the addition of fillers to adjust thermal and dielectric properties further....
Two different types of polyacrylonitrile carbon fibers (Fortafil 243 and Panex 30) were added to thermoplastic matrix (Vectra A950RX Liquid Crystal Polymer) in order to generate carbon fiber/liquid-crystal polymer composites. The in plane and through-plane thermal conductivities of these composites were then evaluated and compared to values generated from a theoretical model, with good agreement. Panex 30 gave higher in-plane thermal conductivity than Fortafil 243 for all volume fractions studied....
The authors observed a remarkable synergistic effect when they used multi-graphene platelets (MGPs) and multi-walled carbon nanotubes (MWCNTs) together in an epoxy composite. The use of these two fillers together increased the tensile strength, thermal conductivity, solubility and compatibility relative to the various individual components. The 1D nanotubes inhibit the aggregation/stacking of the platelets and thus result in high contact area between MGP/MWCNT and the polymer matrix....
