Thermally conductive polymer foams with sodium-dodecyl-benzenesulfonate-surface-modified graphene nanoplatelets and carbon nanotubes: supercritical CO2-induced foaming
Year: 2025
Type: article
Abstract: Lightweight composite foams with high thermal conductivities are difficult to obtain owing to the trade-off between thermal conductivity and porosity. In this study, to improve the dispersion of graphene nanoplatelets (GNP) and multi-walled carbon nanotubes (MWNT) and the uniformity of pore size, sodium dodecyl benzenesulfonate (SDBS) can be used, which acts as a surface modification agent on GNP and MWNT and as a foam stabilizer on supercritical carbon dioxide (scCO2) foaming. The mixed morphology composite (MMC) network leads to improved thermal conductivity, which is not significantly reduced after scCO2 foaming. This may be attributed to the fact that the SDBS-assisted MMC networks of GNP and MWNT in polyamide 6 (PA6) are maintained after foaming with the homogeneous pores by scCO2 and the SDBS stabilizer. Thus, the density of the composite decreases to 1.249g/cm3 after foaming. The resulting high-heat-dissipation composites possess lightweight properties and high thermal conductivities, which are promising for application as battery pack components in next-generation automobiles.
Source: Figshare
Authors: Kim, Dohyeong, Kim, Hyeri, Kim, Yongseok, Koo, Jaseung
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6902311642
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