▎ 摘　　要

Energetic materials, such as 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane(HMX), are known for their high energy output but low safety. Theapplication of fluorine-containing materials in energetic materialscan yield extraordinary results. This paper presents a gas-phase syntheticmethod for preparing perfluoroalkyl-functionalized graphene (PFG)and examines its desensitizing effect on HMX. PFG was synthesizedunder mild and safe conditions, and its structure was characterized.For comparison, alkyl-functionalized graphene (RG) was prepared usingthe same method. Seven composites of HMX with varying fluorine contentsof PFG, as well as graphene, graphene oxide, amino-functionalizedgraphene, and RG were prepared by a solvent/nonsolvent method. HMXcrystals grow as ellipsoids without sharp angles in PFG dispersions,which facilitate the reduction of mechanical sensitivity. Thermalanalyses were conducted to determine the apparent activation energyand physical model of the thermal decomposition process. The resultsshow that PFG inhibits the decomposition of HMX at low temperaturesbut accelerates its rapid decomposition rate at high temperatures.Mechanical sensitivity and thermal analysis studies suggest that 15%PFGis a promising coating agent to improve the safety of energetic materials.