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High-energy density material and synthesis method thereof

A technology with high energy density and synthesis method, applied in the field of new high energy density materials and their synthesis, can solve the problems of complex process, complex synthesis process and high production cost, and achieve simple synthesis method, low process cost and excellent detonation performance. Effect

Active Publication Date: 2017-06-27
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
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Problems solved by technology

However, the current development density reaches 2.0g / cm 3 Explosives are a great challenge, and so far only a few cases have been reported with densities exceeding 2.0g / cm 3 explosives
However, considering comprehensive factors such as energy level, safety, production cost, production process, and environmental compatibility, examples with real practical value are even rarer.
For example, the crystal density of hexanitrohexaazaisowurtzitane (CL-20) reaches 2.035g / cm 3 However, the simple explosive has the problem of crystal transformation, and the production cost is high and the process is complicated; the density of tetranitroglycoluril reaches 2.03g / cm 3 , but the problem of easy hydrolysis limits its practicability; the density of heptanitrocubane reaches 2.03g / cm 3 , however, the extremely complex synthesis process hinders its application

Method used

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  • High-energy density material and synthesis method thereof
  • High-energy density material and synthesis method thereof
  • High-energy density material and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for synthesizing high energy density materials, comprising the steps of:

[0031] a) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-diamine

[0032] At -20°C, add oxalodihydrazide (I) and potassium bicarbonate into the solvent acetonitrile and stir, then add cyanogen bromide in batches, after the addition, control the temperature of the reaction system at -20°C and keep it for 2 days. Add 10 times the volume of water used in acetonitrile to the reaction and continue to stir for 6h, filter and wash with a small amount of water, and dry to obtain [2,2'-bi(1,3,4-oxadiazole)]-5,5'-di Amine (II).

[0033] The molar ratio of oxalodihydrazine to cyanogen bromide and potassium bicarbonate is 1:2:2

[0034] b) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-dinitroamine

[0035] Nitrate [2,2'-linked (1,3,4-oxadiazole)]-5,5'-diamine (II) in the nitration system tetrafluoroboronitrate to obtain [2,2'- Bi(1,3,4-oxadiazole)]-5,5'-dinitroamine (ICM-101), the specific st...

Embodiment 2

[0039] A method for synthesizing high energy density materials, comprising the steps of:

[0040] a) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-diamine

[0041] At 50°C, add oxalodihydrazine (I) and sodium bicarbonate into the solvent tetrahydrofuran and stir, then add cyanogen bromide in batches, and control the temperature of the reaction system at 50°C after the addition, and keep it for 10 hours. Add 1 volume of THF water to the reaction and continue to stir for 2h, filter and wash with a small amount of water, and dry to obtain [2,2'-bi(1,3,4-oxadiazole)]-5,5'-di Amine (II).

[0042] The molar ratio of oxalodihydrazine to cyanogen bromide and sodium bicarbonate is 1:10:10

[0043] b) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-dinitroamine

[0044] Nitrate [2,2'-bi(1,3,4-oxadiazole)]-5,5'-diamine (II) in nitric acid / acetic anhydride in the nitration system to obtain [2,2'- Bi(1,3,4-oxadiazole)]-5,5'-dinitroamine (ICM-101), the specific steps are:

[0045][2,...

Embodiment 3

[0048] A method for synthesizing high energy density materials, comprising the steps of:

[0049] a) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-diamine

[0050] Under the condition of 30°C, oxalic dihydrazide (I) and potassium bicarbonate were added to the solvent toluene and stirred, and cyanogen bromide was added in batches. After the addition, the temperature of the reaction system was controlled to be 30°C and kept for 1 day. Add 5 times the volume of toluene to the reaction water and continue to stir for 4h, filter and wash with a small amount of water, and dry to obtain [2,2'-bi(1,3,4-oxadiazole)]-5,5'-bis Amine (II).

[0051] The molar ratio of oxalic dihydrazide to cyanogen bromide and potassium bicarbonate is 1:5:5

[0052] b) Preparation of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-dinitroamine

[0053] Nitration of [2,2'-bi(1,3,4-oxadiazole)]-5,5'-diamine (II) in the nitration system sulfur trioxide / nitric acid yields [2,2' -Bi(1,3,4-oxadiazole)]-5,5'-dinitroamine (...

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Abstract

The invention discloses a synthesis method of a high-energy density material, which comprises the following steps: a) preparing [2,2'-di(1,3,4-oxadiazole)]-5,5'-diamine: adding oxalyl dihydrazide and potassium bicarbonate to a solvent, performing stirring, adding cyanogen bromide in batches, performing keeping for 10h-2d, adding water in a reaction, and performing stirring, filtering, water washing and drying; b) preparing [2,2'-di(1,3,4-oxadiazole)]-5,5'-dinitramide: allowing [2,2'-di(1,3,4-oxadiazole)]-5,5'-diamine to generate a nitration reaction in a nitration system to obtain [2,2'-di(1,3,4-oxadiazole)]-5,5'-dinitramide. The invention further provides the high-energy density material. The synthesis method of the high-energy density material is developed by taking oxalyl dihydrazide as a raw material, and is low in cost, mild in reaction and simple to operate.

Description

technical field [0001] The invention belongs to the field of energetic material synthesis, and in particular relates to a novel high-energy-density material and a synthesis method thereof. Background technique [0002] Modern weapons require energetic materials to have as high energy as possible, and the synthesis of high energy density has become an important content in the field of energetic materials in recent decades. In fact, density is one of the most important properties of high-energy-density materials. The density directly affects the energy level of energetic materials, because the detonation velocity of energetic materials increases with the increase of density, and the detonation pressure is even related to the square of density. Proportional. However, the current development density reaches 2.0g / cm 3 Explosives are a great challenge, and so far only a few cases have been reported with densities exceeding 2.0g / cm 3 of dynamite. However, considering comprehens...

Claims

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Application Information

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IPC IPC(8): C07D519/00C07D498/04C06B49/00
CPCC06B49/00C07D498/04C07D519/00
Inventor 张庆华张文全邓沐聪
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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