Method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules

A micro-nano and explosive technology, applied in the field of material science, can solve the problems of TATB insensitivity and limitation, and achieve the effect of simple operation and simple process flow.

Inactive Publication Date: 2013-02-13
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, TATB is too insensitive, and is limited in

Method used

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  • Method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules
  • Method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules
  • Method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 4000g of deionized water and 1.0g of OP-10 into the crystallizer and mix well, pre-cool to 2°C for later use; at room temperature, add 100g of TATB and 2000g of concentrated sulfuric acid into the drug-dissolving kettle, stir to completely dissolve the explosive, remove the stirring , transfer the explosive solution to the liquid medicine tank; use a stirrer to make the non-solvent medium in the crystallizer run vigorously, then add the explosive solution in the liquid medicine tank to the non-solvent dropwise under normal pressure, and add ice while dropping Block, keep the temperature of the non-solvent medium at about 2°C; the obtained fine material liquid is washed several times, centrifuged at 10,000r / min, and finally freeze-dried at -45°C to obtain 92g of micro-nano TATB explosives, the volume average particle size Diameter 171nm, d 50 =107nm.

Embodiment 2

[0028] Add 4000g of deionized water and 1.0g of OP-10 into the crystallizer and mix well, pre-cool to 2°C for later use; at room temperature, add 100g of TATB and 1000g of concentrated sulfuric acid into the drug-dissolving kettle, stir to completely dissolve the explosive, remove the stirring , transfer the explosive solution to the liquid medicine tank; use a stirrer to make the non-solvent medium in the crystallizer run vigorously, then add the explosive solution in the liquid medicine tank to the non-solvent dropwise under normal pressure, and add ice while dropping block, keeping the temperature of the non-solvent medium at about 2°C; the obtained fine material liquid was washed several times, centrifuged at 10,000r / min, and finally freeze-dried at -45°C to obtain 91g of micro-nano TATB explosives, the volume average particle size Diameter 922nm, d 50 =2591nm.

Embodiment 3

[0030] Add 4000g of deionized water and 1.0g of OP-10 into the crystallizer and mix well, pre-cool to 10°C for later use; at room temperature, add 100g of TATB and 2000g of concentrated sulfuric acid into the drug-dissolving kettle, stir to completely dissolve the explosive, remove the stirring , transfer the explosive solution to the liquid medicine tank; use a stirrer to make the non-solvent medium in the crystallizer run vigorously, then add the explosive solution in the liquid medicine tank to the non-solvent dropwise under normal pressure, and add ice while dropping Block, keep the temperature of the non-solvent medium at about 10°C; the obtained fine material liquid is washed several times, centrifuged at 10,000r / min, and finally freeze-dried at -40°C to obtain 90g of micro-nano TATB explosives, the volume average particle size Diameter 1769nm, d 50 =1531nm.

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Abstract

The invention discloses a method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules. The method comprises the following steps of: (1) preparation of explosive solution, wherein the TATB explosive is dissolved to prepare the explosive solution without impurities; (2) preparation of non-solvent medium, wherein water and dispersant are uniformly mixed to prepare the non-solvent medium, and the non-solvent medium is cooled by putting in a refrigerator or adding ice cakes and other mode; (3) mixed crystallization, wherein the TATB explosive solution prepared in the step (1) and the non-solvent medium prepared in the step are mixed to crystallize to form micro-nano explosive granules, and the non-solvent medium in the mixing process is kept at a temperature of lower than 10 DEG C; and (4) post-treatment, wherein the micro-nano explosive granule liquid prepared in the step (3) are subjected to solid-liquid separation, washing purification and drying to obtain the micro-nano TATB explosive product. The method has the characteristics of simple process flow and convenience in operation, and is applicable to industrial large-scale production. By adopting the method, micro-nano TATB powder with average granular diameter of 170nm and d50 of 100nm can be obtained by controlling process parameters.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a preparation method of micronano TATB explosive particles with a particle diameter below 1 μm. Background technique [0002] TATB (1,3,5-triamino-2,4,6-trinitrobenzene) has become a model of insensitive high-energy explosives (IHE) due to its high insensitivity and moderate energy, and has attracted much attention in the field of energetic materials. However, TATB is too insensitive, and is limited in the application of detonation and detonation transmission series. When TATB is refined, its detonation and detonation performance will be significantly improved. Therefore, in addition to retaining the excellent performance of ordinary particle size TATB in high insensitivity, ultra-fine TATB, especially micro-nano-scale TATB below 1 μm, has a smaller critical diameter, which is beneficial to Flyers and short pulses are sensitive to detonation, and the detonation wave p...

Claims

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Application Information

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IPC IPC(8): C06B25/04C06B21/00
Inventor 曾贵玉聂福德赵林逄万亭陈娅
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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