Preparation method of submicron hexanitrohexaazaisowurtzitane in batch

A technology of heteroisopentazane explosives and hexanitrohexanitrogen, which is applied in explosives processing equipment, explosives, offensive equipment, etc., can solve the problems of small preparation amount, long grinding time, and increased post-processing difficulty, so as to reduce processing , short grinding time and simple preparation method

Inactive Publication Date: 2013-10-09
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Among the above refinement methods, the ball milling method has a large amount of preparation, but the prepared CL-20 has a particle size of about 5 μm, and the grinding time is longer, 12-16 hours; although the solvent / non-solvent method obtains submicron CL-20, However, its preparation amount is small, and it is easy to introduce organic solvent impurities, which increases the difficulty of post-processing

Method used

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  • Preparation method of submicron hexanitrohexaazaisowurtzitane in batch
  • Preparation method of submicron hexanitrohexaazaisowurtzitane in batch
  • Preparation method of submicron hexanitrohexaazaisowurtzitane in batch

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Embodiment 1

[0031] Take 0.2g of surfactant OP-10 and add it into 500g of water to make a 0.04% surfactant solution by mass percentage. Weigh two parts of the following substances: 330g of zirconia grinding balls with a diameter of 3mm, 150g of zirconia grinding balls with a diameter of 1mm, 30g of CL-20 raw materials, and 150g of surfactant solution, and add them to two grinding tanks respectively, and cool the grinding tanks to 1°C. Place the grinding jar symmetrically and fix it on the planetary grinder, start the planetary grinder, set the speed at 200rpm, take it out every hour and cool it down to 1°C, and grind for a total of 8 hours. Use a sieve to separate the ground explosive suspension from the grinding ball medium, centrifuge the separated explosive suspension at 10,000 rpm, and finally freeze-dry it at -45°C to obtain CL-20 explosive with an average particle size of 500nm .

Embodiment 2

[0033] Take 1.5g of surfactant OP-10 and add it into 500g of water to make a 0.3% surfactant solution by mass percentage. Weigh two parts of the following substances: 100g of 5mm zirconia grinding balls, 50g of ceramic grinding balls with a diameter of 1mm, 10g of CL-20 raw materials, and 25g of surfactant solution. ℃. Place the grinding tank symmetrically and fix it on the planetary grinder, start the planetary grinder, set the speed at 150rpm, take it out every hour and cool it to 5°C, and grind for 10 hours in total. Use a sieve to separate the ground explosive suspension from the grinding ball medium, filter the separated explosive suspension through a filter plate, and finally dry it in vacuum at 60°C to obtain a submicron CL-20 explosive with an average particle size of 660nm CL-20 Dynamite.

Embodiment 3

[0035] Take 4.0g of surfactant Tween-20 and add it into 2000g of water to make a 0.2% surfactant solution by mass percentage. Weigh four parts of the following substances: 1000g of zirconia grinding balls with a diameter of 3mm, 200g of tungsten carbide grinding balls with a diameter of 1mm, 100g of CL-20 raw materials, and 400g of surfactant solution. to 3°C. Place the grinding jar symmetrically and fix it on the planetary grinder, start the planetary grinder, set the speed at 200rpm, take it out every hour and cool it to 3°C, and grind for a total of 8 hours. Use a sieve to separate the ground explosive suspension from the grinding ball medium, centrifuge the separated explosive suspension at 10,000 rpm, and finally dry it in vacuum at 60°C to obtain CL-20 explosive with an average particle size of 970nm.

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Abstract

The invention discloses a preparation method of submicron hexanitrohexaazaisowurtzitane in batch. The method comprises: adding a surfactant into water to prepare a surfactant solution, grading by using grinding ball mediums with different diameters, adding CL-20, the surfactant solution and the grinding ball mediums into grinding tanks, cooling, symmetrically putting the grinding tanks, fixing the grinding tanks onto a planet grinder for planet grinding, separating a grinded explosive suspension and the grinding ball mediums, performing solid-liquid separation for the explosive suspension, and drying to obtain the submicron CL-20. According to the preparation method provided by the invention, the CL-20 explosive, the surfactant solvent and the grinding ball mediums with different diameters are graded, and the planet grinder is used for repeated grinding. The prepared epsilon-CL-20 is uniform in powder particle size, smooth in particle surface, and regulatable in average particle size; during a preparation process, no organic solvent impurities are introduced, a post treatment is reduced , a total grinding time is 1-10 hours, and a grinding time is short. The method is suitable for production in batch.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a method for batch preparation of submicron hexanitrohexaazaisopentazane explosive with smooth particle surface and particle diameter below 1 μm. Background technique [0002] Hexanitrohexaazaisopentazane (CL-20) is a new type of caged nitramine high energy density compound first discovered and synthesized by American A.T.Nielsen in 1987. It is the elemental substance with the highest energy that can be mass-produced so far Explosives, the energy output is 10% to 15% higher than that of HMX. Under normal temperature and pressure, CL-20 mainly has four crystal forms, namely α, β, γ and ε, among which ε has the highest density and the best thermal stability, and is the preferred crystal form in modern weapon design. [0003] Studies have shown that after micronization of explosives, most of them show reduced mechanical sensitivity, increased short-pulse detonation se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
Inventor 吴鹏张娟杨志剑丁玲曾贵玉李金山
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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