Fabrication of polymethylphenylsiloxane decorated C₆₀ via π-π stacking interaction for reducing the flammability of silicone rubber

Jiedong Qiu, Xuejun Lai *, Hongqiang Li, Xingrong Zeng * and Yiyou Wu

Abstract: The free-radical trapping capability of buckminsterfullerene (C₆₀) 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 C₆₀(PMPS-d-C₆₀) was fabricated via π-π stacking interaction and incorporated into HTVSR. It was found that PMPS-d-C₆₀not only overcame the negative effect of C₆₀on HTVSR vulcanization, but also effectively enhanced the flame retardancy of HTVSR. By adding only 4.0 phr PMPS-d-C₆₀, the limiting oxygen index of HTVSR was increased to 29.0%, and its peak of heat release rate was reduced more than 32%.

论文链接：https://doi.org/10.1016/j.matlet.2018.06.120