期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 136, 期 -, 页码 76-84出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2016.10.002
关键词
Nano composites; Polymer-matrix composite (PMCs); Thermal properties; Flame retardancy
资金
- Major State Basic Research Development Program of China (973 Program) [2010CB631105]
- Natural Science Foundation of China [51103108, 11172212]
- Fundamental Research Funds for the Central Universities
In this paper, the graphite oxide was prepared by modified Hummers method, and 9,10-dihydro-9-oxa -phosphaphenanthrene-10-oxide (DOPO) was grafting on the graphene by acylating chlorination method to prevent aggregate and gain synergistic flame retardancy. Graphene-DOPO was characterized by fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Carbon fiber/epoxy resin (CF/ER) composites containing graphene-DOPO were prepared by hot pressing method. And the flammability properties of the composites were investigated. Composites with 3 wt% graphene-DOPO increased the LOI value from 18.5% to 28%and can reach UL-94 V-1rating during the vertical flame tests. Moreover composites with 3 wt% graphene-DOPO reduced the total heat release (THR) from 16.1 to 12 kJ/g. The same tendency was acquired from the peak heat release rate (PHRR) showing positive effect of graphene-DOPO in improving the flame retardancy of CF/ER composites. TGA results demonstrated that the char residues of composites increased with the addition of graphene-DOPO. (C) 2016 Elsevier Ltd. All rights reserved.
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