Hexogen explosive crystal and preparation method thereof

A technology of RDX and explosives, which is applied in the field of RDX crystals and its preparation, achieving the effects of excellent performance, easy scale-up and preparation, and simple process flow

Active Publication Date: 2019-02-05
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

Judging from the existing public information, RDX with special shapes such as needles and crosses that can be used for primers and its preparation technology have hardly been reported.

Method used

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  • Hexogen explosive crystal and preparation method thereof
  • Hexogen explosive crystal and preparation method thereof
  • Hexogen explosive crystal and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 100g of Hexogen explosives, 500g of zirconia ball milling beads, 150g of deionized water, and 0.05g of alkylphenol polyoxyethylene ether, put them together in a planetary ball milling tank, mill at room temperature for 2 hours at a speed of 450rpm, filter, Washing with deionized water, adopting freeze-drying, and drying it under the condition of vacuum degree of 10mba to obtain fine RDX powder. Weigh 0.2g of refined RDX powder, add it to 20g of the neutral red dye solution with a mass concentration of 0.4% prepared in advance, pour it into a stainless steel reactor, seal it, heat it to 115°C, and react for 4.5h. Take out and cool the reactor, filter the explosive, wash it with deionized water, and dry it to obtain RDX crystals with a light red color and a specific cross shape, and the reaction yield is 95.7%. The BAM impact sensitivity tester is used to test the impact sensitivity of explosives, and the impact sensitivity value is increased from 7.5J of the raw ma...

Embodiment 2

[0034] Weigh 500g of RDX, 2000g of zirconia ball milling beads, 550g of deionized water, and 0.25g of polyoxyethylene sorbitan monolaurate, put them together in a planetary ball mill jar, and ball mill at room temperature at a speed of 300rpm 6h, filtered, washed with deionized water, freeze-dried, and dried under the condition of vacuum degree of 1mba to obtain fine RDX powder. Weigh 10g of refined RDX explosive powder, add it to 100g of neutral red dye solution with a mass concentration of 1% prepared in advance, pour it into a stainless steel reaction kettle, seal it, heat it to 125°C, and react for 6h. Take out and cool the reactor, filter the explosive, wash it with deionized water, and dry it to obtain a light red crystal of RDX explosive with a specific cross shape, and the reaction yield is 96.3%. The BAM impact sensitivity tester was used to test the impact sensitivity of explosives, and the impact sensitivity value was increased from 7.5J to 17.5J from the raw materi...

Embodiment 3

[0037] Weigh 200g of Hexogen explosives, 2000g of zirconia ball milling beads, 600g of deionized water, and 0.1g of alkylphenol polyoxyethylene ether, put them together in a planetary ball milling tank, mill at room temperature at a speed of 200rpm for 4.5h, filter , washed with deionized water, freeze-dried, and dried under the condition of a vacuum of 4mba to obtain a refined RDX powder. Weigh 1g of the refined RDX powder, add it to 200g of saffron T dye solution with a mass concentration of 0.2% prepared in advance, pour it into a stainless steel reaction kettle, seal it, heat it to 150°C, and react for 3h. Take out and cool the reactor, filter the explosive, wash it with deionized water, and dry it to obtain a light red crystal of RDX explosive with a specific cross shape, and the reaction yield is 97.1%. The BAM impact sensitivity tester is used to test the impact sensitivity of explosives, and the impact sensitivity value is increased from 7.5J to 15.5J from the raw mate...

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Abstract

The invention discloses a Hexogen explosive crystal and a preparation method thereof. The preparation method comprises the following steps: (A) performing ball milling on the Hexogen explosive to obtain fine particle powder; (B) heating the obtained fine particle explosive powder in a dye solution, and finishing a self-assembly reaction by taking dye molecules as a template agent to obtain the Hexogen explosive crystal with specific morphology. The Hexogen explosive crystal prepared by the method has uniform morphology, all particles are of a special cross-morphology structure, and the explosive has a color while the impact sensitivity is obviously reduced in comparison with a common Hexogen explosive; the preparation method disclosed by the invention has a simple technological process, the yield reaches 95% or more, and expanded preparation is easy to implement; the obtained Hexogen explosive crystal product has an important application value in the fields such as primary explosive and micro-component charging.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a RDX explosive crystal and a preparation method thereof. Background technique [0002] RDX, namely cyclotrimethyltrinitramine, is a high-energy explosive widely used in military weapons and civilian fields. For explosive materials, the morphology of the crystal has a significant impact on its shock initiation sensitivity, mechanical sensitivity and other properties. Therefore, the morphology control technology of explosive crystals and the preparation of explosives with special morphology and structure are of great significance. For explosives used as primers, nanostructures, needle-like, porous and other special shapes and structures can effectively reduce the detonation threshold of explosives and improve the detonation performance. At the same time, explosive crystals with a special shape (such as a cross structure) can also be used to charge energetic micro-d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/34C06B21/00
CPCC06B21/00C06B25/34
Inventor 杨志剑张孟华林聪妹张建虎刘渝
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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