Preparation method of MTNP/TNAZ eutectic mixture

A low eutectic and solution technology, which is applied to attack equipment, explosives processing equipment, nitroalkane compositions, etc. The effect of mechanical sensitivity, improved safety, and stable performance

Active Publication Date: 2020-11-03
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method still requires heating and controlling the temperature range, which will cause certain hidden dangers in the safety of the experimental process.
In addition, mixing the two substances in a molten state is prone to uneven mixing of the two substances, resulting in low quality eutectics and unstable properties

Method used

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  • Preparation method of MTNP/TNAZ eutectic mixture
  • Preparation method of MTNP/TNAZ eutectic mixture
  • Preparation method of MTNP/TNAZ eutectic mixture

Examples

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preparation example Construction

[0029] The preparation method of embodiment 1-5 of the present invention is identical, is the preparation method of a kind of MTNP / TNAZ eutectic, and described method comprises the steps:

[0030] Step 1, preparing a solution: adding 1-methyl-3,4,5-trinitropyrazole and 1,3,3-trinitroazetidine into an organic solvent to prepare a solution;

[0031] Step 2, Precipitate the drug: Use a syringe to slowly add the prepared solution into the anti-solvent, and precipitate.

Embodiment 1

[0033] This example involves a preparation of eutectics with a molar ratio of MTNP / TNAZ of 1:3. Step1: Configuration solution

[0034] At room temperature, 1-methyl-3,4,5-trinitropyrazole and 1,3,3-trinitroazetidine were added to 2 mL of acetone as an organic solvent to form a solution. in:

[0035] The total mass of MTNP and TNAZ is 2 g, and the molar ratio of MTNP / TNAZ is 1:3.

[0036] Step2: Precipitation of drugs

[0037] Add the prepared solution into the anti-solvent, and the dropping speed should be slow.

[0038] First, put the prepared solution into the syringe, and use the syringe to slowly drop the solution into 200mL of anti-solvent water. During this process, keep stirring and control the speed at 350-400r / min, and then wait for the drug to precipitate.

[0039] Suction filtration and freeze-drying of the obtained medicine can complete the preparation of the eutectic product.

[0040] The DSC spectrum of the eutectic with a molar ratio of 1:3 of MTNP / TNAZ obta...

Embodiment 2

[0042] This example involves the preparation of eutectics with a molar ratio of MTNP / TNAZ of 1:2

[0043] Step1: Configure the solution

[0044] At room temperature, 1-methyl-3,4,5-trinitropyrazole and 1,3,3-trinitroazetidine were added to 4 mL of organic solvent acetone to form a solution. in:

[0045] The total mass of MTNP and TNAZ is 2 g, and the molar ratio of MTNP / TNAZ is 1:2.

[0046] Step2: Precipitation of drugs

[0047] Add the prepared solution into the anti-solvent water, and the dropping speed should be slow.

[0048] First, put the prepared solution into the syringe, and slowly drop the solution into 250mL of anti-solvent water using the syringe. During this process, keep stirring and control the speed at 350-400r / min, and then wait for the drug to precipitate.

[0049] Suction filtration and freeze-drying of the obtained medicine can complete the preparation of the eutectic product.

[0050] The DSC spectrum of the eutectic with a molar ratio of 1:2 of MTNP...

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Abstract

The invention discloses a preparation method of an MTNP / TNAZ eutectic mixture. The preparation method comprises the following steps: (1) adding MTNP and TNAZ into an organic solvent to prepare a solution, wherein the molar ratio of MTNP to TNAZ is 1-3 : 1-3; (2) controlling the flow rate by using an injector, slowly dropwise adding the prepared solution into an anti-solvent, and continuously performing stirring in the process. According to the invention, a solvent anti-solvent method is adopted, experimental operation can be conducted at the room temperature, the link that a water area or an oil bath is used for heating and temperature rising in the melting process of a traditional melting method is effectively avoided, and the safety and convenience of an experiment are greatly improved;in addition, the eutectic prepared by using the solvent anti-solvent method is higher in quality, more uniform in mixing and very stable in performance, and the defect that different batches of eutectic prepared by using a traditional melting method are different in performance is completely avoided, so the proportion of the obtained lowest eutectic is more accurate.

Description

technical field [0001] The invention belongs to the technical field of explosive improvement; in particular, it relates to a preparation method of MTNP / TNAZ eutectic. Background technique [0002] Fusion-cast explosives are low in cost, good in formability, and have a high degree of automation. They have an irreplaceable position in military mixed explosives, and the proportion of TNT-based fused-cast explosives in military mixed explosives is as high as 90%. However, with the progress and development of society, the development and use of weapons have put forward new requirements for charges. TNT-based melt-cast explosives can no longer meet the requirements of modern weapons and equipment, such as low energy levels, low density, The detonation performance is not ideal, the mechanical properties are poor, and there are problems such as oil leakage, brittleness, and high toxicity. Now there are two solutions: one is to continue to search for or synthesize low-melting point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/38C06B21/00
CPCC06B21/0008C06B25/38
Inventor 王毅寇勇郭凯歌宋小兰李凤生
Owner ZHONGBEI UNIV
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