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Sphericized hexanitrohexaazaisowurtzitane (HNIW) crystal and preparation method thereof

A technology of hexanitrohexaazane and isowurtzitane, which is applied in the field of spherical hexanitrohexaazaisowurtzitane crystals and preparation of such spherical hexanitrohexaazaisowurtzitane crystals

Inactive Publication Date: 2010-01-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, spheroidized hexanitrohexanitrogenated heteroisowutzitane (HNIW) crystals have not been reported yet.

Method used

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  • Sphericized hexanitrohexaazaisowurtzitane (HNIW) crystal and preparation method thereof
  • Sphericized hexanitrohexaazaisowurtzitane (HNIW) crystal and preparation method thereof

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Embodiment

[0038] In the present invention, unless otherwise specified, the percentages described in the present invention are percentages by weight. The following specific examples are used to illustrate the present invention, but not to limit the present invention.

Embodiment 1

[0042] Add 10g of γ-HNIW into 20ml of ethyl acetate in a three-neck flask, dissolve and filter. Add 0.1 g of maleic acid to ethyl acetate and stir to dissolve it. After adding 8 ml of chloroform dropwise, add 1 g of ε-HNIW seed crystals, and then add 160 ml of chloroform. The addition of chloroform is completed within 21 hours to release all the dissolved HNIW. The crystallization temperature is 20-25°C. The ε-HNIW crystal obtained by crystallization has no sharp edges and corners, and its shape is a polyhedral sphere. Shock Sensitivity H 50 is 41 cm.

Embodiment 2

[0044] Add 10g of γ-HNIW into 20ml of ethyl acetate in a three-neck flask, dissolve and filter to remove undissolved impurities. 0.12 g of pentaerythritol was added to ethyl acetate, stirred and dissolved. After adding 8ml of chloroform dropwise, add 1g of ε-HNIW seed crystals, and then add 160ml of chloroform. The addition of chloroform is completed within 20 hours to release all the dissolved HNIW. The crystallization temperature is 20-25°C. The ε-HNIW crystal obtained by crystallization has no sharp edges and corners, and its shape is a polyhedral sphere. Shock Sensitivity H 50 is 31 cm.

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Abstract

The invention provides a sphericized epsilon type hexanitrohexaazaisowurtzitane (HNIW) crystal and a preparation method thereof. The preparation method of the sphericized epsilon type hexanitrohexaazaisowurtzitane (HNIW) crystal comprises the following steps: a) dissolving alpha-HNIW, beta-HNIW and gamma-HNIW or mixture of the alpha-HNIW, the beta-HNIW and the gamma-HNIW into a solvent to form a saturated solution of the alpha-HNIW, the beta-HNIW and the gamma-HNIW or the mixture of the alpha-HNIW, the beta-HNIW and the gamma-HNIW; b) adding a crystal growth control agent to the saturated solution and adding an anti-solvent to form a supersaturated solution; and c) adding epsilon-HNIW seed crystals to the supersaturated solution and continuously adding the anti-solvent until all HNIW in the supersaturated solution is released to grow a sphericized epsilon-HNIW crystal. The sphericized epsilon-HNIW crystal does not have sharp edges and corners but has a multi-faceted spherical shape, particle size of 20 to 500 um, chemical purity of 98 to 99.9 percent determined by high performance liquid chromatography, porosity of 0.01 percent to 0.40 percent and 5kg drop hammer impact sensitivity H50 of 26 to 52 centimeters.

Description

technical field [0001] The invention relates to a spheroidized hexanitrohexaazaisowurtzitane (HNIW) crystal and a method for preparing the spheroidized hexaazaisowurtzitane crystal, which belongs to the field of explosives. Background technique [0002] The particle size, shape and its internal defects of energetic compound crystals are important performance parameters, as described in: Crystallization of HMX-Particles by Using the Gas Anti-Solvent-Process.Prop.Explos.Pyrotech by Teipel Ulrich et al. .1999, 24:195; Crystallization and Characterization of RDX, HMX, and CL-20 by Antoine E.D. et al. Crystal Growth & Design, 2004, 4:999; Flippen-Anderson, Synthesis of Polyazapolycyclic Caged Polynitromines by A.T.Nielsen et al., Tetrahedron 1998 , 54:11793. The shape of energetic compound crystals affects the sensitivity and bulk density. Spherical crystals have good processing performance in the process of being processed into energetic materials, and have better safety. The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22
Inventor 陈华雄陈树森刘进全李丽洁金韶华史彦山
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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