▎ 摘　　要

Thermal conductivity of UV-crosslinked pressure sensitive adhesives (PSAs) using SiC microparticle as a main filler and SiC nanoparticle grafted graphene oxide (mSiC(nano)-GO) as an auxiliary filler have been investigated. The introduction of mSiC(nano)-GO resulted in a homogeneous distribution of fillers without the sedimentation of SiC microparticle. The thermal conductivity and initial tack of PSAs was significantly increased with substituting 0.5-2.0 wt% of mSiC(nano)-GO filler for SiC microparticle at a fixed total weight fraction of fillers in PSAs, however, the peel strength of PSAs decreased with increasing the mSiC(nano)-GO fillers. The PSAs showed the thermal conductivity of 0.68 W/m K at 40 wt% of hybrid filler content which is a 325% improvement compared to the bare-PSA. It is speculated that the enhancement is due to the auxiliary filler chemically bonded with matrix and the facile formation of heat paths between SiCmicro and mSiC(nano)-GO.