Fabrication and Characterization of Al 2 O 3 -Siloxane Composite Thermal Pads for Thermal Interface Materials.

In this study, Al 2 O 3 -siloxane composite thermal pads were fabricated using a tape-casting technique, and the thermal conductivity effect of the Al 2 O 3 nanoparticle powder synthesized using a flame fusion process on siloxane composite thermal pads was investigated. Furthermore, various case studies were implemented, wherein the synthesized Al 2 O 3 nanoparticle powder was subjected to different surface treatments, including dehydration, decarbonization, and silylation, to obtain Al 2 O 3 -siloxane composite thermal pads with high thermal conductivity. The experimental results confirmed that the thermal conductivity of the Al 2 O 3 -siloxane composite pads improved when fabricated using surface-treated Al 2 O 3 nanoparticle powder synthesized with an optimally spheroidized crystal structure compared to that produced using non-treated Al 2 O 3 nanoparticle powder. Therefore, this study provides guidelines for fabricating Al 2 O 3 -siloxane composite thermal pads with high thermal conductivity in the field of thermal interface materials.