Synthesis of modified graphene oxide and its improvement on flame retardancy of epoxy resin |
| |
| Authors: | Wenqian Wu Yiting Xu Haiyang Wu Jinmei Chen Min Li Ting Chen Jing Hong Lizong Dai |
| |
| Affiliation: | Fujian Provincial Key Laboratory of Fire Retardant Materials, College of Materials, Xiamen University, Xiamen University, Xiamen, Fujian, 361005 People's Republic of China |
| |
| Abstract: | In this work, the small molecule with double-phosphaphenanthrene structure was successfully grafted on the surface of graphene oxide (GO), which is called functionalized graphene oxide (FGO). The introduction of FGO improved the poor interfacial compatibility between graphene and epoxy matrix. And FGO could be used as the highly effective flame retardant. The thermogravimetric analysis results showed a significant improvement in the char yield of cured FGO/EP. When the content of FGO was 3 wt %, the limiting oxygen index value reached 30.4%. At the same time, the three-point bending and thermomechanical tests confirmed that the mechanical properties of the epoxy resin composites were improved. Based on the char analyses of SEM images and Raman spectroscopy, the flame retardant could promote the formation of a stable carbon layer. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 47710. |
| |
| Keywords: | flame retardancy mechanical properties thermal properties |
|
|
