▎ 摘　　要

To improve the thermal decomposition property of cyclotrimethylenetrinitramine (RDX), a new nano-energetic combustion catalyst nitrated graphene oxide (NGO), which was synthesized by nitrifying graphene oxide with nitro-sulfuric acid, is introduced to RDX via a solvent-antisolvent method. A scanning electron microscope was used to investigate the morphology of RDX, NGO and the 2% NGO/RDX nano-energetic composite. The properties and the mechanisms of thermal decomposition of the NGO/RDX nano-energetic composites in different blend ratios were analyzed through thermogravimetry-differential scanning calorimetry and thermogravimetry-mass spectra, respectively. In comparison with RDX, the thermal decomposition temperature of 2%NGO/RDX decreased from 246 to 224 degrees C, and the apparent decomposition heat enhanced from 761 to 1651 J g(-1). The tests of impact sensitivity and friction sensitivity were carried out by a standard method. The value of h(50) of 2%NGO/RDX increased from 24 to 40 cm and the friction sensitivity of 2%NGO/RDX reduced from 86 to 12% compared with RDX. These results indicated that NGO had an excellent catalytic property upon the thermal decomposition of RDX and it can also improve its impact sensitivity and friction sensitivity.