含能材料2022，Vol.30Issue(9)：886-896,11.DOI:10.11943/CJEM2022067
制备梯度结构来提高HMX/Al复合材料的燃烧和压力输出性能
Preparation of Graded Structured HMX/Al to Enhance Combustion and Pressure Output Performance
摘要
Abstract
Aluminized explosives have been widely applied due to their high energy density and pressure output. To further en-hance the secondary combustion reaction and pressure output of aluminized explosives,graded structure is designed inspired by the microstructure of bamboo. In this work,the radially-graded structured HMX/Al(RGS-HMX/Al)cylinders with three layers containing different sizes and content of Al were prepared through 3D direct writing technology. The effects of Al distribution on combustion and pressure output properties of graded HMX/Al were fully studied. For the RGS-HMX/Al cylinder with Al content of 10％,20％,and 30％ distributed from inner to outer layer,the combustion reaction and flame propagation of inner layer were faster than that of outer layer. And the pressure(2337.61 kPa)was higher than that of RGS-HMX/Al cylinder with Al content in the reverse distribution. For the RGS-HMX/Al cylinder containing Al of 10μm,5μm,and 160 nm distributed from inner to outer lay-er,a slow combustion process with sparse bright Al droplets was observed. Moreover,the highest peak pressure(1512.65 kPa) was obtained for the RGS-HMX/Al cylinders with nAl in the middle layer,which exhibited much higher pressure output than that homogeneous HMX/Al cylinder. More importantly,bimodal pressure was observed for the RGS-HMX/Al cylinders with Al of 10μm in the middle layer.关键词
仿生结构/径向梯度结构/HMX/Al复合物/燃烧反应/压力输出Key words
bio-inspired/radially-graded structure/HMX/Al composites/combustion reaction/pressure output分类
军事科技引用本文复制引用
贺倩倩,毛耀峰,王军,聂福德..制备梯度结构来提高HMX/Al复合材料的燃烧和压力输出性能[J].含能材料,2022,30(9):886-896,11.基金项目
National Natural Science Foundation of China(11872341 and 22075261)国家自然科学基金资助(11872341和22075261) （11872341 and 22075261）
