Fabrication of polymethylphenylsiloxane decorated C_(60) via π-π stacking interaction for reducing the flammability of silicone rubber

摘要

The free-radical trapping capability of buckminsterfullerene (C-60) inevitably inhibits peroxide vulcanization, which is one of the most challenges for its application in high temperature vulcanized silicone rubber (HTVSR). In this work, polymethylphenylsiloxane decorated C-60 (PMPS-d-C-60) was fabricated via pi-pi stacking interaction and incorporated into HTVSR. It was found that PMPS-d-C-60 not only overcame the negative effect of C-60 on HTVSR vulcanization, but also effectively enhanced the flame retardancy of HTVSR. By adding only 4.0 phr PMPS-d-C-60, the limiting oxygen index of HTVSR was increased to 29.0%, and its peak of heat release rate was reduced more than 32%. (C) 2018 Elsevier B.V. All rights reserved.