期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 100, 期 -, 页码 106-117出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.04.012
关键词
Polymer-matrix composites (PMCs); Thermal properties; Thermal analysis
资金
- National Key Technologies Research and Development Program of China [2016YFC0802801]
- Natural Science Foundation of China [51374164, 21374111]
- Fundamental Research Funds for the Central Universities [WUT: 2017IVA043]
- Open Research Fund of State Key Laboratory of Coal Mine Safety Technology [sklcmst103]
To improve its dispersion and flame retardant efficiency, graphene oxide (GO) is dually modified with polymeric flame retardant and the nanomaterial with catalytic carbonation ability. Via the reactions between oxygen functional groups in GO and P Cl groups in hexachlorocyclotriphosphazene, phosphazene-based flame retardant is grafted to GO. Due to the strong affinity of Ni2+ with NH2 groups in this phosphazene flame retardant, the decoration of Ni(OH)(2) nanosheets on the graphene is facilitated. Transmission electron microscopy images confirm good dispersion and exfoliation state of graphene in polypropylene (PP) matrix. The incorporation of functionalized graphene oxide (FGO) results in the reduction of peak heat release rate, total heat release and smoke release of PP during the combustion. Flame mechanism of FGO is concluded according to the results of thermal decomposition and char analysis. This work provides a novel modification strategy for enhancing the dispersion and flame retardant efficiency of graphene. (C) 2017 Published by Elsevier Ltd.
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