为了研究凝聚炸药在不同热烤温度下的热分解情况及相应规律,文中采用以RDX为基的高能炸药,以1℃/min的升温速率并采用恒温控制技术,进行了不同温度下的热烤试验,利用FLUENT软件对不同温度下的热爆炸延滞期进行了数值模拟。结果表明,烤燃温度对凝聚炸药的热分解有重要影响,在1℃/min的升温速率条件下,当恒定温度达到178℃后,实验用高能炸药发生自加热反应,最终导致点火;随着炸药装药量的增加,炸药热起爆临界温度在逐渐降低。

In order to study the response of explosive under different heat temperature and the corresponding law, in this article, it adopted RDX as the base of high explosive with the heating rate of 1 °C/min, the thermostat control technology was used for different environment temperature heat test and carried out the numerical simulation with software FLUENT. It turned out that the cook-off temperature had important effect on thermal decomposition of explosives. Under the heating rate condition of 1 °C/min, when the constant temperature reached 178 °C, experiments with high explosives occurred the self-heated reaction, eventually leading to the ignition; with the increase of explosive charge, explosive heat detonation critical temperature was gradually reduced.