College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University
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DOI:
10.7502/j.issn.1674-3962.2016.11.05
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Abstract:
Graphene is a two-dimensional sheet material with honeycomb-like lattice structure formed by sp2 hybrid carbon atoms. Due to its excellent mechanical, electrical, optical and thermal properties, graphene has been widely used as nanofiller to improve the performances of polymer materials. In this review, the updated progress of graphene and its modified derivatives as a new type of additives in improving the flame retardant properties and the anti-aging properties of polymers were summarized. Based on the physical structure characteristics and surface chemical composition of graphene sheets, corresponding mechanisms including the promotion effect on the formation of char layer, the barrier effect of oxygen or degradation products, and the trapping effect of the peroxide free radicals produced by degradation were discussed. The synergistic effect and mechanism between graphene and other additives were also considered. The advantages and disadvantages of graphene in the field of flame retardant and anti-aging of polymers were summarized by comparing with the existing additives, and its development prospects and scientific issues to be resolved were also discussed.