二硫化钼掺杂改性FOX-7含能复合材料的热分解特性OACSTPCD

The achievement of rapid energy release at a low activation energy is vital for the improvement of the thermal decom-position characteristics of 1,1-diamino-2,2-dinitroethylene(FOX-7).Herein,MoS2 doped FOX-7(FOX-7/MoS2)energetic com-posites were prepared by the solvent-antisolvent method.Scanning electron microscopy(SEM),energy dispersive spectrometer(EDS),X-ray powder diffraction(XRD),X-ray photoelectron spectroscopy(XPS),thermogravimetric-differential scanning calo-rimeter(TG-DSC)were employed to investigate the morphology,phase composition,thermal decomposition characteristics,and decomposition activation energy of composites.The doped FOX-7/MoS2 energetic composites displayed improved decompo-sition temperature at low temperatures and fastened decomposition heat release at high temperatures.Compared with the raw material FOX-7,the decomposition temperature and activation energy of FOX-7/MoS2-5%during the low-temperature stage in-creased by 6.8℃and 78.6 kJ·mol-1,respectively.The decomposition temperature and activation energy at the high temperature decreased by 23.4℃and 340.4 kJ·mol-1,respectively.The TG-MS results showed that the proportion of CO2 in the FOX-7/MoS2-5%increased from 7.3%to 16.8%at the high-temperature stage,indicating a promoted and completed decomposi-tion of FOX-7 using the MoS2 dopant.