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High-energy-density explosive mixture and preparation method thereof

A technology of high energy density and mixed explosives, applied in directions such as explosives, can solve the problems of limitation, slow deflagration speed and energy release rate, etc., and achieve the effect of simple and practical preparation method and strong practical value.

Active Publication Date: 2017-04-26
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation of oxidant and reducing agent particles in traditional thermite leads to slow deflagration velocity and energy release rate, which limits the application of thermite

Method used

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  • High-energy-density explosive mixture and preparation method thereof
  • High-energy-density explosive mixture and preparation method thereof
  • High-energy-density explosive mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Add Al / Fe 2 o 3 TNT-based high energy density explosives

[0022] Formula composition (mass percentage) is as follows:

[0023]

[0024] The explosive preparation process is as follows:

[0025] ① Premix

[0026] Weigh TNT, RDX, Al and thermite Al / Fe in proportion 2 o 3 , mechanical mixing;

[0027] ②Hot pressing

[0028] Spread the explosive powder mixture in the mold, raise the temperature to 45°C (TNT melting point 80°C), vacuumize, the vacuum degree is -0.094MPa, mechanically pressurize to 40MPa, and hold the pressure for 120min;

[0029] ③ post-processing

[0030] Release the pressure at a rate of 2MPa / s, lower the temperature at a rate of 1°C / min to normal temperature and pressure, and open the mold to obtain a high energy density mixed explosive sample. The density and heat of detonation are shown in Table 2.

Embodiment 2

[0031] Embodiment 2: Add the DNAN base high energy density explosive of Al / CuO

[0032] Formula composition (mass percentage) is as follows:

[0033]

[0034] The explosive preparation process is as follows:

[0035] ① Premix

[0036] Weigh DNAN, NTO, AP, zirconium powder and thermite Al / CuO in proportion, and mix them mechanically;

[0037] ②Hot pressing

[0038] Spread the explosive powder mixture in the mold, raise the temperature to 55°C (DNAN melting point 96°C), vacuumize, the vacuum degree is -0.092MPa, mechanically pressurize 80MPa, and hold the pressure for 90min;

[0039] ③ post-processing

[0040] Release the pressure at a rate of 1MPa / s, lower the temperature at a rate of 0.5°C / s, drop to normal temperature and pressure, and open the mold to obtain a high energy density mixed explosive sample. The density and heat of detonation are shown in Table 2.

Embodiment 3

[0041] Embodiment 3: adding Al / WO 2 DNAN-based High Energy Density Explosives

[0042] Formula composition (mass percentage) is as follows:

[0043]

[0044] The explosive preparation process is as follows:

[0045] ① Premix

[0046] Weigh DNAN, NTO, RDX, aluminum powder and thermite Al / WO in proportion 2 , mechanical mixing;

[0047] ②Hot pressing

[0048] Spread the explosive powder mixture in the mold, raise the temperature to 60°C (DNAN melting point is 96°C), vacuumize, the vacuum degree is -0.092MPa, mechanically pressurize to 80MPa, and hold the pressure for 90min;

[0049] ③ post-processing

[0050] Release the pressure at a rate of 0.8MPa / s, lower the temperature at a rate of 0.5°C / s, drop to normal temperature and pressure, and open the mold to obtain a high energy density mixed explosive sample. The density and heat of detonation are shown in Table 2.

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Abstract

The invention discloses a high-energy-density explosive mixture. A low-melting-point single-compound explosive is adopted and comprises, by mass, 5-30% of an adhesive, 15-60% of a main explosive, 15-40% of a combustion agent, 0-25% of an oxidizing agent and 5-50% of a high-density high-energy additive, wherein the adhesive is prepared from trinitrotoluene, 2,4-dimitroanisole and 3,4-dinitrofurazanofuroxan, the main explosive is prepared from RDX, HMX, CL-20, TATB, NTO, NQ, LLM-105 or the mixture thereof, the combustion agent is prepared from aluminum powder, zinc powder, zirconium powder, modified aluminum powder, magnalium powder, boron-aluminum alloy powder, aluminum hydride and magnesium hydride, the oxidizing agent is prepared from ammonium perchlorate, ammonium nitrate and ammonium dinitramide, and thermite is adopted as the high-density high-energy additive. The prepared explosive mixture has the high energy density, the density is larger than or equal to 2.0 g / cm<3>, and the heat of explosion in unit volume is larger than or equal to 16000 J / g.

Description

technical field [0001] The invention relates to an explosive and a preparation method thereof, in particular to a high-energy-density mixed explosive and a preparation method thereof, and belongs to the technical field of energetic materials. Background technique [0002] In military warfare, the attack damage and protection of weapons are always two important themes in the development of military science and technology. With the development of science and technology, the strength and toughness of metal materials are getting higher and higher, and the armor, shell and other external protection are getting thicker and thicker. Many military targets have moved to the depth of tens to hundreds of meters underground or inside the mountain. On the whole, the means of protection are getting higher and higher, and the difficulty of attacking damage is getting bigger and bigger; therefore, large-caliber artillery shells, large-charge missiles, aerial bombs, underwater weapons, therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/14
CPCC06B33/14
Inventor 郑保辉罗观刘涛黄勇蔡忠展郭朋林肖春
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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