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Magnesium hydride type hydrogen-stored emulsion explosive

A technology of emulsified explosives and magnesium hydride, which is applied in explosives, non-explosive/non-thermal agent components, offensive equipment, etc., can solve problems that have not been discovered, and achieve the effect of light weight, large impulse, and wide application

Inactive Publication Date: 2012-05-02
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the use of hydrogen storage materials magnesium metal hydrides as sensitization materials in emulsion explosive technology

Method used

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  • Magnesium hydride type hydrogen-stored emulsion explosive
  • Magnesium hydride type hydrogen-stored emulsion explosive
  • Magnesium hydride type hydrogen-stored emulsion explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The total mass of magnesium hydride type hydrogen storage emulsion explosive (magnesium hydride + emulsion matrix) is 50 g, and the magnesium hydride content is 0.5% (=0.25 g) of the total mass. After adding magnesium hydride to the emulsified base, it was continuously stirred with a stirrer for 30 minutes, and the underwater explosion test was carried out after standing for 8 hours.

[0020] The specific formulation of the emulsifying base used is the same as in the prior art, see Table 1.

[0021] Table 1 Emulsifying base formula used in Example 1

[0022] component Nitrate water Span-80 Complex oil phase other content 78 15 2 4 1

[0023] In order to carry out a comparative experiment, the emulsion explosive matrix was sensitized by using the conventional sensitizer glass microspheres produced in the prior art to prepare an emulsion explosive. Since the existing experiments show that when the content of glass microspheres is 4%, th...

Embodiment 2

[0031] The total mass of the emulsion explosive (magnesium hydride and emulsion matrix) is 50g, of which the magnesium hydride content is 3% (=1.5 g) of the total mass. After adding magnesium hydride to the emulsified base, use a stirrer to continuously stir for 25 minutes, and perform an underwater explosion test after standing for 30 hours.

[0032] The formulation of the emulsification base used is the same as in the prior art, see Table 3.

[0033] Table 3 Emulsifying base formula used in Example 2

[0034] component Nitrate water LZ2731 Complex oil phase other content 77 16 2 4 1

[0035] In the underwater explosion test, the shock wave curve obtained is shown in image 3 . In the figure: the abscissa represents time (unit: s), the ordinate represents pressure (unit: MPa), and the underwater explosion shock wave curve is recorded by an oscilloscope. The test parameters are shown in Table 4, and the data in Table 4 are all read ...

Embodiment 3

[0040] The total mass of the emulsion explosive (magnesium hydride + emulsion base) is 50 g, of which the magnesium hydride content is 5% (=2.5 g) of the total mass. After adding magnesium hydride to the emulsified base, use a stirrer to continuously stir for 25 minutes to make it evenly mixed, and then perform an underwater explosion test after standing for 25 days.

[0041] The emulsification base formulation used is the same as in the prior art, see Table 5.

[0042] Table 5 Emulsifying base formula used in Example 3

[0043] component Nitrate water LZ2731 Complex oil phase other content 77 16 2 4 1

[0044] In the underwater explosion test, the shock wave curve obtained is shown in Figure 4 . In the figure: the abscissa represents time (unit: s), the ordinate represents pressure (unit: MPa), and the underwater explosion shock wave curve is recorded by an oscilloscope. The test parameters are shown in Table 6, and the data in Table 6 a...

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Abstract

The invention belongs to the technical field of explosive preparation, in particular to a magnesium hydride type hydrogen-stored emulsion explosive. The components comprise an emulsion base and a sensitized material, wherein the sensitized material is magnesium hydride; the mass of the magnesium hydride takes up 0.2-6% of the total mass of the emulsion explosive; the magnesium hydride is powders with purity not smaller than 95%. The added magnesium hydride is uniformly distributed in the emulsion base such that a part of magnesium hydride has a chemical reaction with water in the emulsion base, and a little amount of hydrogen is released, and foaming effect is performed on the emulsion base, and the detonator sensitivity is improved. When the emulsion base of the mixed magnesium hydride is initiated, the hydrogen bubbles under the function of shock waves produced in emulsion base detonation generate detonation reaction, and at the same time, the rest magnesium hydride quickly releaseshydrogen under the denotation waves of the emulsion base, and the hydrogen joins the detonation reaction of the emulsion base such that the emulsion explosive has characteristics of a high output shock wave peak value, a high impulse and a high energy. The detonation energy of the emulsion explosive is better than that of the common emulsion explosive.

Description

technical field [0001] The invention belongs to the technical field of explosive preparation, in particular to an emulsion explosive prepared by using a hydrogen storage substance. Background technique [0002] In the production process of emulsion explosives, the W / O type emulsion is called emulsion matrix, which is the basic body of emulsion explosives and has good stability and potential detonation performance. The ammonium nitrate aqueous phase solution (oxidant) in the emulsification matrix is ​​dispersed into extremely small particles in the oil phase solution (flammable agent). Shows a higher viscosity. The emulsion matrix is ​​an unsensitized emulsion explosive, which has a high density, requires a large amount of detonation energy, and is very difficult to propagate. Therefore, in the process of preparing the emulsion explosive, it must be sensitized by physical or chemical methods. The adiabatic compression and "hot spot" characteristics of the air in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06B31/02C06B23/00
Inventor 马宏昊程扬帆沈兆武杜建国
Owner UNIV OF SCI & TECH OF CHINA
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