采用密闭爆发器实验对微气孔球形药的定容燃烧性能进行了研究.结果表明,随着堆积密度的减小,孔隙率相应提高,压力上升速率加快,孔隙率与表观燃速系数呈指数关系；随着堆积密度的降低,动态活性曲线的峰值逐步提高,并表现出显著的燃烧渐增特性.%The constant-volume combustion characteristics was studied by a closed vessel test. The results show that the porosity increases with decreasing the bulking density of sample. The pressure rises faster with decreasing the bulking density. The relation of apparent burning rate coefficient and the porosity reveals in power function. With decreasing the bulking density,the peak value of dynamic vivacity increases,showing significant progressing characteristics.
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