Method for spheroidizing hexanitrohexaazaisowurtzitane (HNIW) explosive

A technology of heteroisopentazine and hexanitrohexaazine, which is applied in the field of spheroidization of hexanitrohexaazaisopentzitane explosives, can solve problems such as the unsuitability of CL-20 explosive crystals, etc. The effect of good presentability and high loose bulk density

Active Publication Date: 2014-01-08
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

Therefore, the batch spheroidization technology based on physical means is often not applicable to CL-20 explosive crystals

Method used

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  • Method for spheroidizing hexanitrohexaazaisowurtzitane (HNIW) explosive
  • Method for spheroidizing hexanitrohexaazaisowurtzitane (HNIW) explosive
  • Method for spheroidizing hexanitrohexaazaisowurtzitane (HNIW) explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 30g of dimethyl sulfoxide and 50g of distilled water, mix them evenly, add 5.0g of CL-20 raw material into the mixed solvent, stir at 40°C and 600rpm for 180min, filter the material liquid and wash with distilled water After drying, the solid product was added to 30 g of ethanol, stirred at a speed of 500 rpm for 60 min at room temperature, filtered, washed with distilled water, and dried to obtain 4.4 g of a spherical CL-20 product. The analysis shows that the crystal density after spheroidization is 2.0381g / cm 3 , The mechanical sensitivity test has a characteristic drop height of 49.4cm.

Embodiment 2

[0032] Weigh 30g dimethyl sulfoxide and 60g distilled water, add 0.1g polyvinylpyrrolidone, dissolve and mix evenly, add 5.0g CL-20 raw material into the mixed solvent, stir at 45°C and 500rpm for 60min , after filtering the material liquid, washing with distilled water for more than 3 times, and drying, the solid product was added to 30g of ethanol, stirred at a speed of 500rpm at room temperature for 60min, filtered, washed with distilled water, and dried to obtain spherical CL -20 product 4.5g. The analysis shows that the crystal density after spherification is 2.0364g / cm 3 , The mechanical sensitivity test has a characteristic drop height of 45.3cm.

Embodiment 3

[0034] Weigh 30g of butyl acetate and 500g of isooctane, add 0.1g of polyvinyl alcohol, dissolve and mix evenly, add 40.0g of CL-20 raw material into the mixed solvent, stir at 60°C and 500rpm for 300min , filter the material liquid, wash with distilled water for more than 3 times, and dry, add the solid product to 400g of ethanol, stir at room temperature at 350rpm for 60min, filter, wash with distilled water, and dry to obtain spherical CL -20 product 36.8g. The analysis shows that the crystal density after spheroidization is 2.0380g / cm 3 , the mechanical sensitivity test has a characteristic drop height of 41.5cm.

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Abstract

The invention discloses a method for spheroidizing a hexanitrohexaazaisowurtzitane (HNIW) explosive. The method comprises the following steps: I. adding explosive crystals into an etching liquid, heating to a certain temperature, mechanically agitating for certain time, and then filtering and washing the explosive; II. adding the explosive in the step I. into a surface polishing solvent, mechanically agitating at normal temperature, then filtering and washing materials, and drying to obtain the spherodized explosive crystals. The method is applicable to spheroidization of CL-20 crystals with various particle size and various crystal forms, is simple in technological flow, mild in reaction conditions, good in reproductivity, high in yield, and applicable to industrial batch production; the prepared spheroidized CL-20 explosive crystal product is approximately spherical, has less edges and smooth surfaces; the internal defects of the particle crystals are fewer, the open-setting stacking density is high, and the mechanical sensitivity is obviously reduced.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a method for spheroidizing hexanitrohexaazaisopentazane explosives. Background technique [0002] The morphology, purity, particle size and crystal form of crystal materials are the most important factors that determine the basic properties and application value of crystals. Generally speaking, spherical crystals have good processing performance. Optimizing the particle shape of high-energy explosives can increase the bulk density and solid content without reducing or even improving the safety performance of weapon systems. [0003] Due to the low mechanical sensitivity, high packing density and superior mechanical properties of spherical high-energy explosive crystals, scholars at home and abroad have carried out research on different spherical methods for different explosives. Among them, hexanitrohexaazaisopentazane (CL-20) It is a new type of clathrate compound ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
Inventor 杨志剑徐容丁玲李洪珍聂福德
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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