Speaker
Description
In recent years, polymer/ceramic composites with high thermal conductivity have been widely used in microelectronic devices, superconducting magnets and aviation, and further improving their thermal conductivity is a great challenge. In this study, spherical alumina nanoparticles were modified with 3-aminopropyltriethoxy-silane (APTES) successfully. Furthermore, the modified alumian(M- Al2O3)/Epoxy and graphene/(M- Al2O3)/Epoxy composites were prepared and their properties were tested in the temperature range of 70 K-300 K. The results showed that the thermal conductivity of the composite with 1 wt% graphene and 60 wt% (M- Al2O3)/Epoxy is 13 times higher than that of pure epoxy at 70 K, which indicates its application prospect in thermal interface materials.
Keywords: thermal properties; polymer-matrix composites; low temperatures
