期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 91, 期 -, 页码 30-40出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.09.013
关键词
Graphene; Polymer-matrix composites; Flame retardancy; Thermal properties
资金
- Anhui Jianzhu University
- National Key Technology RD Program [2013BAJ01B05]
A MgAl-layered double hydroxide loaded graphene hybrid (RGO-LDH) was prepared through the co-precipitation method, and then heptaheptamolybdate (Mo7O246-) modified RGO-LDH hybrid (RGO-LDH/Mo) was synthesized by the ion exchange method. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectra, Laser Raman spectroscopy (LRS) and Transmission electron microscop (TEM) micrograph results showed the RGO-LDH/Mo was synthesized successfully. RGO-LDH/Mo was added into the polyurethane elastomer (PUE) for improving the flame retardancy and smoke suppression properties. The results showed that the char yield of PUE with RGO-LDH/Mo was increased significantly compared with pure PUE. The peak heat release rate and the maximum smoke density of the PUE composites decreased drastically. The reasons were attributed to the physical barrier of graphene and LDH, and the metal oxide generated from LDH could restrain the diffusion of inflammable gas. Meanwhile, MoO3 formed in the decomposition process of RGO-LDH/Mo promoted the catalytic carbonization and smoke suppression effect. (C) 2016 Elsevier Ltd. All rights reserved.
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