The Effect of the Hydrogen Containing Material TiH₂on the Detonation Characteristics of Emulsion Explosives

Abstract

In order to improve the detonation performance of emulsion explosives, a new type of emulsion explosives with TiH 2 powders is developed. The influences of the amount of sensitizers GMs and energetic additives TiH 2 on explosion characteristics of emulsion explosives are studied to determine the optimum compositions. Underwater explosion and brisance testing experiments show that, compared to traditional GMs sensitized emulsion explosives, the shock wave specific impulse I and total energy E of GMs-TiH 2 sensitized emulsion explosives are improved significantly, and the effect of TiH 2 powders on improving the explosion power of emulsion explosives is better than that of Ti powders. The brisance of GMs-TiH 2 emulsion explosives is 23.80 mm compression of lead block, 7.7 mm more than that of the emulsion explosives sensitized by GMs alone. Therefore, the hydrogen containing material TiH 2 could be a promising energetic additive for developing high-power emulsion explosives.

Synthesis and Characterization of Pressure Resistant Agent with Double‐Layer Core/Shell Hollow‐Structure for Emulsion Explosive

“…The delay time to detonate the compressed emulsion explosives was less than 20 min and each sample was tested three times. In order to quantitatively describe the influence of dynamic pressure desensitization on the detonation performance of emulsion explosive, the parameter “desensitization ratio” was introduced . The calculation formula is as follows: …”

“…Many studies had proved that the destruction of sensitization bubbles was the main cause of pressure desensitization for emulsion explosives , therefore, the key issue for improving the pressure resistant ability of emulsion explosive is to reduce the loss of sensitization bubbles. Cenosphere is a kind of hollow fly ash that can float on the water.…”

Detonation Characteristics of an Aluminized Explosive Added with Boron and Magnesium Hydride

“…The addition of metal hydride materials into explosives has also been investigated by many researchers recently. For instance, the detonation properties of ammonium nitrate (AN)/RDX/TNT with AlH 3 /MgH 2 [11], the explosion properties of RDX with MgH 2 /TiH 2 [12][13][14] and emulsion explosives with MgH 2 /TiH 2 [15][16][17], the detonation heat and confined explosion parameters of RDX with TiH 2 /ZrH 2 [18,19], the mechanical sensitivity of AN/TNT/RDX with MgH 2 /Mg(BH 4 ) 2 [20], and the thermal behaviors of TNT with MgH 2 /Mg(BH 4 ) 2 [21] and TNT/RDX with Mg(BH 4 ) 2 [22] were reported. The objective of the present work is to determine the detonation characteristics of a novel aluminized explosive added with B and MgH 2 to explore what role of B and MgH 2 play in the detonation reaction.…”

Investigation on the Reaction Energy, Dynamic Mechanical Behaviors, and Impact-Induced Reaction Characteristics of PTFE/Al with Different TiH2 Percentages

“…All of these advantages make TiH 2 a promising high-energy additive to energetic materials. Xue et al [ 27 ] and Cheng et al [ 28 ] introduced TiH 2 into explosives and found the explosive/TiH 2 mixtures have a better performance on the explosive parameters; the positive time, the peak overpressure, and the specific impulse of the shock wave were all obviously improved. Li [ 25 ] introduced TiH 2 to the propellant, and found that TiH 2 would contribute to accelerate the combustion rate of the propellant.…”