RDX粒度对机械感度的影响

Effect of Particle Size of RDX on Mechanical Sensitivity

系统研究了RDX粒度对撞击感度和摩擦感度的影响,实验测试的RDX平均粒径为1.5～124μm,并在此粒度范围内分为5个粒度等级。其中撞击感度用特性落高法表示,摩擦感度用特性正压力表示。结果表明:炸药的撞击感度、摩擦感度均随粒度的减小而降低。从理论上分析了炸药粒度变化对机械感度影响的机理。

Effect of particle size of RDX on impact sensitivity and friction sensitivity is systematically studied. The particle size tested ranges from 1.5 to 124 μm and is divided into 5 grades. The impact sensitivity and friction sensitivity are characterized with 50% drop height and 50% normal pressure respectly. The results show that impact and friction sensitivities of RDX decrease with the reduction of particle size of RDX. The mechanism and factors of particle size affecting mechanical sensitivity are theoretically analyzed. The results are significant in the research and application of explosives.