| 초록 |
The surfaces of layered expanded graphite (EG) is activated by covalently grafted mercapto groups (-SH), which can readily react with the rubber macromolecular chains, thus forming strong interfacial adhesion between the filler and the rubber matrix. Shear-induced mercapto group-activated graphite nanoplatelets (S@GNPs) were fabricated in situ during the compound mixing in a two-roll mill. A correlation between the interfacial interaction and the thermal conductivity, as well as the thermo-physical properties was comprehensively investigated. The results showed that rubber/S@GNPs composites exhibited higher mechanical performances, thermo-physical properties, and superior thermal conductivity attributing to the stronger interfacial interaction via chemical bonding between S@GNPs and rubber molecular chains compared with the XSBR/GNPs composites connected by weaker physical bonding. |
