期刊
RSC ADVANCES
卷 7, 期 32, 页码 19662-19673出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra01930k
关键词
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资金
- Anhui Provincial Natural Science Foundation [1708085ME113]
- National Key Technology RD Program [2013BAJ01B05]
A hybrid with MgAl-layered double hydroxide loaded graphene (RGO-LDH) was synthesized by a coprecipitation method, and then dihydrogen phosphate anion (H2PO4-) modified RGO-LDH hybrid (RGO-LDH/P) was prepared through an ion exchange method. X-ray diffraction, Fourier transform infrared spectra, and transmission electron microscope-energy-dispersive X-ray spectroscopy results showed that RGO-LDH/P was synthesized successfully. RGO-LDH/P was added into epoxy resin (EP) to investigate the effect on flame retardancy and smoke suppression. Results showed that the limit oxygen index and char yield of EP with RGO-LDH/P increased, reaching 24.8% and 19.7%, respectively, compared with EP. Meanwhile, peak heat release rate, total heat release, smoke production rate and total smoke production of the EP composite decreased by 37.9%, 30.6%, 27.5%, and 38.4%, respectively. Improved flame retardancy and smoke suppression were attributed to the physical barrier of graphene and LDH, and the catalytic carbonization effect of LDH. In addition, H2PO4- had a role in promoting carbonization and further improving flame retardancy and smoke suppression.
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