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Influence of carbon filler type on thermal conductivity and stability of ester resin

Ester resin has electrical insulating properties and low thermal conductivity. With the addition of nano-sized carbon fillers, a polymer nanocomposite with higher thermal and electrical conductivity can be produced. The interface and adhesive interactions between polymer matrix and filler have a significant impact on the properties of polymer nanocomposites. Five types of carbon fillers were used in this paper: carbon black nanoparticles (CB), long multi-walled (L-MWCNT), short multi-walled (S-MWCNT), long multi-walled functionalized with carboxyl group (L-MWCNT-COOH) and short multi-walled carbon nanotubes with carboxyl group (S-MWCNT-COOH) with mass fractions of 0.5, 1 and 5 wt %. Thermal properties were determined by measuring thermal conductivity by the “hot bridge“ method and the thermal stability of prepared nanocomposites were observed by thermogravimetric method (TGA). The addition of 1 and 5 wt % of carbon nanoparticles increases the thermal conductivity and did not affect the thermal stability.

nanocomposite, carbon filler, thermal stability, thermal conductivity

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