Detonation characteristics of emulsion explosives sensitized by MgH2

Cheng, Yi; H., H.; Shen, Zh.

doi:10.1134/s0010508213050134

Cited by 32 publications

(24 citation statements)

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“…MgH 2 is a kind of ionic metal hydride and decomposes into magnesium and hydrogen at a high temperature, and these decomposition products would be involved in detonation and release of energy in the reaction zone, which delays the attenuation of the shock wave. In addition, our preliminary studies show that MgH 2 can improve the effect of the explosion reaction of emulsion explosives [9], and makes the emulsion explosive explode more completely, thus increasing the detonation pressure.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous research, MgH 2 was used as a chemical sensitizer to sensitize the emulsion matrix with "hydrogen bubbles", and experimental results have shown that MgH 2 -sensitized emulsion explosives have excellent detonation characteristics and anti-pressure ability [9][10][11]. However, emulsion explosives sensitized by MgH 2 also have problems with foaming and safety.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of the Energetic Additive Coated MgH2 on the Power of Emulsion Explosives Sensitized by Glass Microballoons

Cheng

Wang

Feng

et al. 2016

Cent. Eur. J. Energ. Mater.

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Traditional emulsion explosives, in spite of excellent water resistance, safe handling and good storage performance, have low power problems which seriously hinders their use. In order to improve the power of emulsion explosives, a hydrogen based emulsion explosive was devised. Scanning electron microscope pictures and experimental storage results show that the coating effect and stability of coated magnesium hydride (MgH2) are very good. The power of an emulsion explosive sensitized by glass microballoons was significantly increased (24.30 mm compression of lead block) after adding coated MgH2, compared to only 16.10 mm compression when not added. Thus emulsion explosives with coated MgH2 as an energetic additive have many potential applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of the Energetic Additive Coated MgH2 on the Power of Emulsion Explosives Sensitized by Glass Microballoons

Cheng

Wang

Feng

et al. 2016

Cent. Eur. J. Energ. Mater.

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“…As reported by Cheng [10], the emulsion explosives energy is the maximum when the mass ratio of GMs and emulsion matrix is 4 : 100. So emulsion matrix and GMs were mixed in a mass ratio of 100 : 4.…”

Section: Explosives Preparationmentioning

confidence: 99%

“…Hydrogen has a high energy density, which is three times that of liquid hydrocarbon raw materials, and it can increase the explosion power of explosives if added into ex-plosives [10]. GMs can be used as hydrogen storage container in industry and the diameter of which ranges from 15 mm to 135 mm.…”

Section: Introductionmentioning

confidence: 99%

Detonation Characteristics of Emulsion Explosives Sensitized by Hydrogen‐Storage Glass Microballoons

Wang

Shen

et al. 2018

Propellants Explo Pyrotec

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In order to improve the detonation performances of emulsion explosives, a new type of emulsion explosives sensitized by hydrogen‐storage glass microballoons is proposed. The influences of hydrogen in glass microballoons on explosion characteristics of emulsion explosives were studied. Brisance testing and underwater explosion experiments showed that, compared with traditional emulsion explosives, the shock impulse and specific total energy of hydrogen‐storage glass microballoons sensitized emulsion explosives are improved significantly. The brisance (compression of lead block) of hydrogen‐storage emulsion explosives is 23.0 mm, 3.2 mm more than that of traditional emulsion explosives. Therefore, the hydrogen‐storage glass microballoons could be a promising energetic additive for developing high‐power emulsion explosives.

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“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Cao

Song

Gao

et al. 2019

Propellants Explo Pyrotec

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Investigation of the detonation characteristics of an aluminized explosive added with boron (B) and magnesium hydride (MgH 2 ) were undertaken and compared with the aluminized explosive of similar formulation. Firstly, the explosion heat was measured in a vacuumed calorimetric bomb, then the detonation pressure was determined by the interface velocity experiment, and finally the cylinder expansion test was performed. From the calorimetric data, the addition of B and MgH 2 into an aluminized explosive increases the heat of explosion slightly. From the detonation pressure data, the addition of B and MgH 2 appears to have no significant influence to the detonation pressure. From the cylinder test data, the detonation velocity, wall velocity, Gurney energy and detonation energy were determined. The aluminized explosive added with B and MgH 2 shows weak acceleration ability, but exhibits a stronger afterburning potential. Finally the equation of state of the detonation products was determined for different casing conditions. Conclusions about how to use B and MgH 2 in aluminized explosives to generate optimal effects are drawn.

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Detonation characteristics of emulsion explosives sensitized by MgH2

Cited by 32 publications

References 1 publication

The Effect of the Energetic Additive Coated MgH2 on the Power of Emulsion Explosives Sensitized by Glass Microballoons

The Effect of the Energetic Additive Coated MgH2 on the Power of Emulsion Explosives Sensitized by Glass Microballoons

Detonation Characteristics of Emulsion Explosives Sensitized by Hydrogen‐Storage Glass Microballoons

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

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