Explosion Power and Pressure Desensitization Resisting Property of Emulsion Explosives Sensitized by MgH<sub>2</sub>

Cheng, Yi; Ma, Honghao; Liu, Rong; Shen, Zhaowu

doi:10.1080/07370652.2013.818078

Cited by 19 publications

(14 citation statements)

References 8 publications

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“…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%

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: 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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“…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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“…By comparing the influence of aluminum, magnesium and their hydride powders on the properties of nitramine explosives and pyrotechnics, Selezenev and Ward [9,10] concluded that the explosion characteristics in the compositions with hydride powders were superior to that with metal powders. Cheng et al [11] introduced MgH 2 to emulsion explosives and found that MgH 2 plays a dual role as a sensitizer and an energetic material. As a hydrogen storage material with the largest hydrogen gravimetric density, LiBH 4 has a strong chemical reactivity and is able to provide great heat of combustion, which is expected to be a candidate of high-energy combustible agent.…”

Section: Introductionmentioning

confidence: 99%

Study on Thermal Behaviour of AP/LiBH₄ Energetic System

Ding

Shu

et al. 2018

Propellants Explo Pyrotec

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Ammonium perchlorate(AP) and LiBH 4 can form an oxidation-fuel energetic system, which provides a new development direction in designing novel mixed explosive formula. The microcalorimetry and self-designed slow cookoff setup were used to study thermal performance of AP/ LiBH 4 energetic powders and grains respectively. Experimental results show that heat release in micro-calorimetry method for the mixed system at low temperature was due to the reaction between LiBH 4 and residual water vapour. The oxidant gases from AP decomposition participate in the oxidation of LiBH 4 at high temperature.The ignition temperature for the AP/LiBH 4 grain was 270 8C and the explosion reactions were violent in slow cook-off test.

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Explosion Power and Pressure Desensitization Resisting Property of Emulsion Explosives Sensitized by MgH₂

Cited by 19 publications

References 8 publications

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 an Aluminized Explosive Added with Boron and Magnesium Hydride

Study on Thermal Behaviour of AP/LiBH₄ Energetic System

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Explosion Power and Pressure Desensitization Resisting Property of Emulsion Explosives Sensitized by MgH2

Cited by 19 publications

References 8 publications

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 an Aluminized Explosive Added with Boron and Magnesium Hydride

Study on Thermal Behaviour of AP/LiBH4 Energetic System

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Explosion Power and Pressure Desensitization Resisting Property of Emulsion Explosives Sensitized by MgH₂

Study on Thermal Behaviour of AP/LiBH₄ Energetic System