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Titanium hydride-type high-energy composite explosive and preparation method thereof

A technology of mixed explosives and titanium hydride, which is applied in the direction of explosives, etc., can solve the problems of poor compatibility between magnesium hydride and RDX, unstable chemical properties of magnesium hydride, difficulties in storage and transportation of explosives, etc., and achieve good insensitivity effect, Good stability and storability, high thermal decomposition critical temperature effect

Active Publication Date: 2013-05-22
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-energy mixed explosives prepared from magnesium hydride have good energy output characteristics, but the chemical properties of magnesium hydride are unstable, and it is easy to undergo rapid chemical reactions with air or water. The reaction between magnesium hydride and water can release hydrogen, which is a kind of easy Inflammable and explosive gas, the accumulation of hydrogen inside the explosive will bring great difficulties to the storage and transportation of explosives
According to the unpublished literature (Journal of Nanomaterials, Volume 2013, ArticleID864985) published by Yao Miao and Chen Liping of Nanjing University of Science and Technology, which can be viewed from the Internet, "The influence of nano-magnesium hydride on the thermal decomposition behavior of RDX" ( Effect of nanomagnesium hydride on the thermal decomposition behaviors of RDX) shows that the apparent activation energy per mole of RDX is 260.57 kilojoules, while the apparent activation energy per mole of the mixture of magnesium hydride and RDX drops to 202.74 kilojoules, and both The critical temperature of the thermal decomposition of the magnesium hydride is about 230 degrees Celsius, which shows that the thermal stability of the mixture of magnesium hydride and RDX is much lower than that of the simple substance of RDX, and the compatibility of magnesium hydride and RDX is not good.

Method used

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  • Titanium hydride-type high-energy composite explosive and preparation method thereof
  • Titanium hydride-type high-energy composite explosive and preparation method thereof
  • Titanium hydride-type high-energy composite explosive and preparation method thereof

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Experimental program
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Embodiment 1

[0021] The high-energy mixed explosive of this embodiment is made of the following mass percentage components: TiH 1.4 Powder 5%, RDX 90.25%, paraffin 4.75%. where TiH 1.4 The average particle size of the powder is 45 μm.

[0022] The specific preparation method of this high-energy mixed explosive of the present embodiment is as follows:

[0023] ① Weigh each component: TiH 1.4 5g, RDX 90.25g, paraffin 4.75g;

[0024] ② TiH 1.4 The powder is heated at 110°C for 2 hours, dried and passivated;

[0025] ③ Completely passivate RDX and paraffin at 90°C;

[0026] ④The passivated TiH 1.4 The powder is mixed with passivated RDX and stirred uniformly to obtain the high-energy mixed explosive of this embodiment.

[0027] For comparative experiments, 20g of high-energy mixed explosives and 20g of passivated RDX were taken to make cylindrical charges for air explosion test. The size of the drug pack is: diameter 26.5mm, height 22.1mm. Experimental conditions: the sensor and the ...

Embodiment 2

[0031] The high-energy mixed explosive of this embodiment is made of the following mass percentage components: TiH 1.4 20% powder, 76% RDX, 4% paraffin. where TiH 1.4 The average particle size of the powder is 45 μm.

[0032] The specific preparation method of this high-energy mixed explosive of the present embodiment is as follows:

[0033] ① Weigh each component: TiH 1.4 20g, RDX 76g, paraffin 4g;

[0034] ② TiH 1.4 The powder is heated at 110°C for 2 hours, dried and passivated;

[0035] ③ Completely passivate RDX and paraffin at 90°C;

[0036] ④The passivated TiH 1.4 The powder is mixed with passivated RDX and stirred uniformly to obtain the high-energy mixed explosive of this embodiment.

[0037] For comparative experiments, 20g of high-energy mixed explosives and 20g of passivated RDX were taken to make cylindrical charges for air explosion test. The size of the drug pack is: diameter 26.5mm, height 22.1mm. Experimental conditions: The sensor and the drug package...

Embodiment 3

[0041] The high-energy mixed explosive of this embodiment is made of the following mass percentage components: TiH 1.4 Powder 30%, RDX 66.5%, paraffin 3.5%. where TiH 1.4 The average particle size of the powder is 45 μm.

[0042] The specific preparation method of this high-energy mixed explosive of the present embodiment is as follows:

[0043] ① Weigh each component: TiH 1.4 30g, 66.5g of RDX, 3.5g of paraffin;

[0044] ② TiH 1.4 The powder is heated at 110°C for 2 hours, dried and passivated;

[0045] ③ Completely passivate RDX and paraffin at 90°C;

[0046] ④The passivated TiH 1.4 The powder is mixed with passivated RDX and stirred uniformly to obtain the high-energy mixed explosive of this embodiment.

[0047] For comparative experiments, 20g of high-energy mixed explosives and 20g of passivated RDX were taken to make cylindrical charges for air explosion test. The size of the drug pack is: diameter 26.5mm, height 22.1mm. Experimental conditions: The sensor and ...

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Abstract

The invention discloses a titanium hydride-type high-energy composite explosive and a preparation method thereof. The preparation method is characterized by comprising the steps of: by taking titanium hydride as a high-energy additive of the explosive, heating titanium hydride powder at 100-110 DEG C for more than 2 hours, drying and passivating; fusing and passivating a single component explosive and a desensitizing agent, namely wax; and uniformly mixing and stirring 5-30% of titanium hydride, 65%-90% of single component explosive and 3-5% of desensitizing agent, namely wax according to mass percentage, thus obtaining the high-energy composite explosive, wherein the single component explosive is selected from hexogen, trinitrotoluene, pentaerythrite tetranitrate or octogen. The high-energy composite explosive prepared by the method has good compatibility of components and good stability; after exploding, the peak pressure of the high-energy composite explosive is high, and the specific impulse of the high-energy composite explosive is great; and the maximum density of the high-energy composite explosive is 2.3g / cm<3>, and the maximum explosion heat of the high-energy composite explosive is 8.5MJ / kg. According to the preparation method, the titanium hydride is taken as the high-energy additive, so that the energy output of the composite explosive is increased, and the safe long-term storage requirement on the composite explosive can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of explosive preparation, and in particular relates to a titanium hydride type high-energy mixed explosive prepared by using metal hydride as an additive and a preparation method thereof. Background technique [0002] As a special energy source, explosives have important applications in military and national production. There are hundreds of kinds of elemental explosives that have been synthesized in the world, but few of them are directly applied. In order to better play the role of synthetic high-energy explosives and facilitate safe and reliable loading and use, most of them must be made into mixed explosives. In order to improve the energy output performance of explosives, high-energy additives are usually added to explosives. Metal hydrides can be used as high-energy additives for high-power mixed explosives due to their strong reducibility, high oxidation reaction heat, large volume of gas generation...

Claims

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Application Information

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IPC IPC(8): C06B27/00
Inventor 马宏昊薛冰沈兆武
Owner UNIV OF SCI & TECH OF CHINA
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