含能材料微结构调控与释能特性研究进展OA

Based on the relevant domestic and international research progress,the research status of microstructures in ener-getic materials were reviewed,and the regulation mechanisms,controllable preparation methods and energy release character-istics of two typical microstructures,namely core-shell structure and three-dimensional(3D)network structure were summa-rized.Researches demonstrate that microstructure regulation can effectively promote the efficient conversion of the chemical potential energy of energetic materials via targeted design of material interface,pore and scale characteristics.Specifically,through precise control of the core-shell structure interface,the problem of high sensitivity of CL-20 and the oxidation and ag-glomeration of aluminum powder are effectively alleviated,realizing the synergistic optimization of high energy density and low sensitivity.Through the collaborative design of continuous skeleton and hierarchical pores in 3D network structure,the disper-sion uniformity of energetic components and the thermal conduction continuity of the system are improved,achieving the simul-taneous enhancement of energy release efficiency and mechanical properties.It is pointed out that the current field still faces following challenges:the unclear quantitative structure-property relationship between microstructures and energy release char-acteristics,the difficulty in precise and controllable preparation,and the insufficient large-scale engineering application.In the future,further efforts should be devoted to deepen the research on the mechanism of microstructure regulation,optimize the preparation process,and promote the development of energetic materials towards higher energy output,better safety perform-ance,and more controllable energy release process.139 References were attached.