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Method for coating and sensitivity reduction of HMX by using TATB

A technology for desensitization and coating, applied in the direction of nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, etc., can solve the problems of high cost, difficult to control the crystallization process, low solubility, etc., to prevent falling off and mild reaction conditions. , the effect of simple reaction operation

Inactive Publication Date: 2016-10-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this process, the solubility of TATB in DMSO is small, the cost is high, and the crystallization process is difficult to control

Method used

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  • Method for coating and sensitivity reduction of HMX by using TATB
  • Method for coating and sensitivity reduction of HMX by using TATB
  • Method for coating and sensitivity reduction of HMX by using TATB

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In the first step, add 0.09g Estane-5703, 6ml dichloroethane and 3g HMX into the beaker, stir magnetically at a speed of 200r / min at a constant temperature of 60°C for 30min until the solution is uniform, then vacuum filter and dry to obtain a surface Reactive and cohesive HMX;

[0036] In the second step, 0.53g TATB was dissolved in 1ml of concentrated sulfuric acid and stirred until dissolved to obtain a mixed solution of TATB concentrated sulfuric acid;

[0037] In the third step, add the surface-active and cohesive HMX3g and 200ml ice-water mixture prepared in the first step into the four-necked flask, and slowly drop the mixed solution of TATB concentrated sulfuric acid in the second step through the constant pressure dropping funnel. The four-necked flask was stirred rapidly for 1 h while adding dropwise to obtain a suspension;

[0038] The fourth step is to vacuum filter the suspension obtained in the third step, wash the filter cake with sodium carbonate until ...

Embodiment 2

[0042] In the first step, add 0.09g Estane-5703 and β-cyclodextrin, 9ml dichloroethane and 3g HMX into the beaker, stir magnetically at 200r / min at a constant temperature of 60°C for 30min until dissolved evenly, and then vacuum filter , drying to obtain surface active and cohesive HMX;

[0043] In the second step, 0.53g TATB was dissolved in 1ml of concentrated sulfuric acid and stirred until dissolved to obtain a mixed solution of TATB concentrated sulfuric acid;

[0044] In the third step, add the surface-active and cohesive HMX3g and 200ml ice-water mixture prepared in the first step into the four-necked flask, and slowly drop the mixed solution of TATB concentrated sulfuric acid in the second step through the constant pressure dropping funnel. The four-necked flask was stirred rapidly for 1 h while adding dropwise to obtain a suspension;

[0045] The fourth step is to vacuum filter the suspension obtained in the third step, wash the filter cake with sodium hydroxide unti...

Embodiment 3

[0048] In the first step, add 0.15g Estane-5703, 3.75ml mixed solution of dichloroethane and ethyl acetate and 3g HMX into the beaker, stir magnetically at 200r / min at a constant temperature of 60°C for 30min until dissolved evenly, and then vacuum HMX with surface activity and cohesiveness was obtained by suction filtration and drying;

[0049] In the second step, 0.53g TATB was dissolved in 1ml of concentrated sulfuric acid and stirred until dissolved to obtain a mixed solution of TATB concentrated sulfuric acid;

[0050]In the third step, add the surface-active and cohesive HMX3g and 200ml ice-water mixture prepared in the first step into the four-necked flask, and slowly drop the mixed solution of TATB concentrated sulfuric acid in the second step through the constant pressure dropping funnel. The four-necked flask was stirred rapidly for 1 h while adding dropwise to obtain a suspension;

[0051] The fourth step is to vacuum filter the suspension obtained in the third ste...

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Abstract

The invention discloses a method for coating desensitizing HMX with TATB, comprising the following steps: adding binder, solvent and HMX into a beaker, heating and stirring until dissolved evenly, and then vacuum filtering and drying to obtain surface active and cohesive HMX; TATB was dissolved in concentrated sulfuric acid and stirred until dissolved to obtain a mixed solution of TATB concentrated sulfuric acid; the prepared surface-active and cohesive HMX and ice-water mixture were added to a four-necked flask, and TATB The mixed solution of concentrated sulfuric acid was slowly dropped into the four-neck flask through the constant pressure dropping funnel, and the suspension was obtained by rapid stirring while dropping; the obtained suspension was vacuum filtered, and the filter cake was washed with detergent until the pH value of the filtrate was close to neutral. , and dried to obtain TATB-coated HMX mixed explosives. The method of the invention uses concentrated sulfuric acid as a solvent to refine TATB to directly form a coating layer on the surface of HMX, and uses a binder in the coating process to effectively prevent the falling off of TATB, with mild reaction conditions and simple reaction operation.

Description

a technical field [0001] The invention relates to a coating desensitization method for explosives, in particular to a new method for desensitization by using concentrated sulfuric acid as a solvent to refine TATB and directly generate a coating layer on the surface of HMX. Two background technology [0002] With the continuous development of military science and technology, higher and higher requirements are put forward for the survivability and safety performance of modern weapons. The catastrophic accidents that occurred on aircraft carriers such as the USS Enterprise and the unexpected and major accidents in the process of ammunition handling, storage, transportation and use in the past ten years have made people realize that it is necessary to develop low-vulnerability ammunition and develop insensitive explosives. The focus of explosive research is shifted from trying to greatly increase energy to moderately increasing energy under the premise of ensuring safety perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/34
Inventor 李斌栋葛立波常婷陈磊
Owner NANJING UNIV OF SCI & TECH
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