To study the effects of characteristic parameters of hydrogen storage material TiH2 on the detonation performance of epoxypropane (PO) cloud

PO-based mixed fuel samples with different particle sizes (5.40

20.72

38.88 and 60.51 μm) and different contents (0

15 mass%

30 mass%

45 mass% and 60 mass%) of TiH2 powders were prepared. Using a 20 L spherical liquid fuel explosion test system and the colorimetric temperature measurement technology

the solid-liquid-gas three-phase deflagration characteristics of TiH2 powders/PO/air mixture were studied and compared with Ti powders/PO/air mixture. The experimental results showed that the flame propagation velocity

shock wave peak pressure and average flame temperature of TiH2 powders/PO/air mixture all increased when compared with Ti powders/PO/air mixture. With the increasing particle size of TiH2 powders

the shock wave peak pressure

maximum pressure rise rate and flame propagation velocity of TiH2 powders/PO/air mixture showed a trend of continuous decline

while the combustion duration continued to increase. With the increase of TiH2 powders content

the shock wave peak pressure

the maximum pressure rise rate and the flame propagation velocity of the TiH2 powders/PO/air mixture increased at first and then decreased

while the combustion duration showed an opposite trend. Hydrogen storage material TiH2 could significantly improve the damage performance of PO. However

the influence of its characteristic parameters on detonation parameters and combustion duration is opposite

so it is necessary to take overall consideration in the formulation design of cloud explosive weapons.