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Nitramine furazan energetic potassium salt, and preparation method and application thereof

A technology of nitrofuran and nitronitrofuran, applied in the fields of nitrated acyclic/alicyclic/heterocyclic amine explosive composition, organic chemistry, etc., can solve the problem of low potassium content, lower propellant energy level, and potassium salt energy low level problem

Active Publication Date: 2017-07-07
SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, potassium ions have a flame-extinguishing effect in propellants. The conventional potassium salts currently used in propellants are mainly potassium sulfate and potassium nitrate. These potassium salts have low energy and low potassium content. They are used in propulsion Reduces the energy level of the propellant when charged

Method used

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  • Nitramine furazan energetic potassium salt, and preparation method and application thereof
  • Nitramine furazan energetic potassium salt, and preparation method and application thereof
  • Nitramine furazan energetic potassium salt, and preparation method and application thereof

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Embodiment 1

[0025] The freshly prepared N 2 o 5 (15.43g, 142.6mmol) was dissolved in chloroform (300mL), and the temperature of the system was kept at 0°C in an ice bath. 3-Amino-4-chloroximofurazan (2.0605 g, 12.7 mmol) was then added in portions over 5 min. After the addition, react at about 0°C for 1 hour, the solid slowly dissolves and the system turns reddish brown, then raise the temperature to room temperature and react for 1 hour. The dissolved and residual nitrogen oxides in the reaction system were removed under vacuum to obtain a green viscous liquid, which was diluted with 15 mL of methanol. Potassium iodide (4.56g, 27.5mmol) was dissolved in anhydrous methanol (30mL), and added to the above diluent, the system quickly turned reddish brown and a yellow solid was formed. The suspension was stirred and reacted at room temperature for 3 h, filtered with suction, washed with methanol (15 mL), dried, and recrystallized with water / ethanol to obtain a yellow powdery solid with a y...

Embodiment 2

[0028] With embodiment 1, wherein different is N 2 o 5 The molar ratio to 3-amino-4-chloroximifurazan is 1:1, and the yield is 5%.

Embodiment 3

[0030] With embodiment 1, wherein different is N 2 o 5 The molar ratio to 3-amino-4-chloroximifurazan is 5:1, and the yield is 12%.

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Abstract

The invention provides a nitramine furazan energetic potassium salt, and a preparation method and the application thereof. The nitramine furazan energetic potassium salt has the structure as shown in the description and can be prepared by a one-pot method of nitration of an aminofurazan nitration precursor and treatment of potassium salt. The nitramine furazan energetic potassium salt has the characteristics of being high in oxygen balance, high in energy and high in content of potassium, can be used as a green primary explosive, and can be applied to flash suppression in a solid propellant.

Description

technical field [0001] The invention relates to a class of energetic potassium salts of nitrofurazan, a preparation method and application, and belongs to the technical field of energetic materials. Background technique [0002] In the early 1990s, lead azide (LA) began to be used as a primary explosive to replace mercury, and it has been widely used in military and civilian fields. The application of lead azide was initially used to reduce the highly toxic substances produced by mercury, improve the detonation ability of pyrotechnics, and reduce the operational risk of explosives. Although the overall performance of lead azide is excellent, the mass production and use of lead azide has brought serious lead pollution. In addition, lead azide also has insurmountable defects in terms of chemical stability (compatibility). For example, the azide anion in lead azide can chemically react with carbon dioxide in humid air to form highly toxic low Boiling point explosive liquids c...

Claims

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Application Information

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IPC IPC(8): C07D271/08C07D413/04C07D413/14C06B25/34
CPCC06B25/34C07D271/08C07D413/04C07D413/14
Inventor 杨军黄海丰李营
Owner SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
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