含能材料粉尘爆炸压力和压力上升速率的研究

对比研究了点火延迟时间，粉尘粒度和浓度对梯恩梯粉尘，黑索金粉尘和面粉的影响规律，定性讨论了含能材料和一般工业粉尘的爆炸过程。实验表明：空气中的氧浓度并非是含能材料粉尘爆炸的必要条件，爆炸的压力随浓度的增加而线性增加；粒度在一定范围内对爆炸峰值压力影响不大，压力上升速率随粒度的减小而增大，但增加趋势较一般工业粉尘平缓；点火延迟是一定范围内，对其峰值压力和压力上升速率的影响不明显。

A STUDY ON THE PRESSURE AND RATE OF PRESSURE RISE IN ENERGETIC MATERIAL DUSTS

Effects of ignition delay,particle size and concentration on the characteristics of dust explosion of TNT,RDX and wheat flour are studied,and the procedures of explosion of energetic materials and combustible dusts in general are discussed quantitatively.Experimental results show that the comcentration of oxygen in air is not an essential condition for the energetic material.The explosion pressure of the energetic material varies linearly with the concentration.The effect of particle size on the peak pressure is not noticeable,and with an increase in the particle size,the rate of pressure rise decrease more smoothly when compared with that of combustible dusts in genetal.Effects of ignition delay on the peak pressure and rate of pressure are not noticeable within certain ilimits.