Study On Launch Safety Of Thermobaric Explosive

In this paper, a research has been made on the launch safety of thermobaric explosive (TBE) by the theoretical analysis and test method. Five aspects of TBE were considered, including the bonding insensitive system, additives, charge density, aluminium (Al) content and Al powder particle size.This paper have studied the influence of different bonding insensitive system and additives on TBE mechanical sensitivity, formability and static mechanical property by relevant experiment of23kinds of TBE. The analysis of the results showed:it was beneficial to reduce the mechanical sensitivity, improve the formability and static mechanical properties when A rubber was chosed as binder, wax insensitive agent and graphite was chosed as insensitive system, tackifier or6#annexing agent was chosed as functional additive.It also have studied the influence of different charge density, bonding insensitive system, Al content and Al powder particle size on TBE dynamic mechanical properties, by Hopkinson experiment of12kinds of TBE. The analysis of the results showed:The dynamic mechanical property was good when the density ratio was96%. The more binder content, the failure stress value of TBE was better; the more insensitive agent content, the plastic of TBE was better; the more bonding insensitive system as a whole, the speed of stress decreases was slower, the plastic of TBE was better. It was good for improving dynamic mechanical properties when particle size distribution of TBE, the better grain size gradation for the formulation, the better dynamic mechanical properties.Finally, the formulation of TBE which based on a baseline test has been verified by the launch safety experiment, the results showed that it was stable and reliable. The results of this paper can offered reference for launch safety.