Journal
MATERIALS LETTERS
Volume 210, Issue -, Pages 239-242Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.09.027
Keywords
Hindered phenol; Graphene oxide; Nanocomposites; Thermal properties; Thermo-oxidative aging resistance
Funding
- National Natural Science Foundation of China [51703028]
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Hindered phenol functionalized graphene oxide (HPFGO) was prepared by grafting 2,6-Di-tert-butyl-4-hydroxymethyl phenol (DBHMP) onto graphene oxide (GO) using isophorone diisocyanate as bridging agent. FT-IR, XPS, XRD and TGA results confirmed the chemical structure of HPFGO. By latex-mixing method, HPFGO was uniformly dispersed in natural rubber (NR) matrix and obviously enhanced the thermal stability. Importantly, HPFGO significantly improved the thermo-oxidative aging resistance of NR vulcanizate, which was attributed to not only the synergistic antioxidative effect between hindered phenol and urethane groups, but also the barrier role of HPFGO sheets to oxygen. (C) 2017 Elsevier B.V. All rights reserved.
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