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A kind of method for coating tkx-50 with nitroguanidine

A technology of TKX-50 and nitroguanidine, which is used in nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, explosives, offensive equipment, etc., can solve the problems of unsatisfactory explosive performance and mechanical performance, and achieve friction and The effect of low impact sensitivity, safe and reliable operation, and simple preparation process

Active Publication Date: 2020-04-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The insensitivity coating of TKX-50 affects the compatibility of materials and the performance of mixed explosives. The explosive performance and mechanical properties of TKX-50 coated by the current method are not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for coating TKX-50 with nitroguanidine, the specific steps are as follows:

[0024] Step 1. Stir continuously at 40°C with a stirring speed of 160r / min, add 0.6g of polyvinyl butyral to 80g of anhydrous ethyl acetate solvent, keep the temperature constant, and continue stirring to dissolve completely. Obtain a liquid glue with a mass fraction of 0.74%, and place the liquid glue at 45°C for standby;

[0025] Step 2. Continue stirring at 70° C. and a stirring speed of 280 r / min, add 5 g of nitroguanidine into 300 g of distilled water, stir for 30 minutes to form a uniform solution, and obtain a nitroguanidine solution with a mass fraction of 1.64%;

[0026] Step 3: Control the temperature at 80°C and keep the temperature constant, add 94.4g of TKX-50 to the nitroguanidine solution obtained in Step 2, stir at a stirring speed of 220r / min to evenly suspend it, and obtain a suspension;

[0027] Step 4. Under the condition of stirring at a rotating speed of 100r / min...

Embodiment 2

[0032] A method for coating TKX-50 with nitroguanidine, the specific steps are as follows:

[0033] Step 1. Stir continuously at 45°C with a stirring speed of 170r / min, add 0.5g of polymethyl acrylate to 85g of anhydrous ethyl acetate solvent, keep the temperature constant, continue stirring to dissolve completely, and obtain mass For liquid glue with a fraction of 0.58%, place the liquid glue at 50°C for use;

[0034] Step 2. Continue stirring at 60° C. and a stirring speed of 225 r / min, add 4 g of nitroguanidine to 250 g of distilled water, stir for 35 minutes to form a uniform solution, and obtain a nitroguanidine solution with a mass fraction of 1.57%;

[0035] Step 3: Control the temperature at 70°C and keep the temperature constant, add 95.5g of TKX-50 to the nitroguanidine solution obtained in Step 2, stir at a stirring speed of 240r / min to evenly suspend it, and obtain a suspension;

[0036] Step 4. Under the stirring condition of rotating speed 80r / min, raise the tem...

Embodiment 3

[0041] A method for coating TKX-50 with nitroguanidine, the specific steps are as follows:

[0042] Step 1. Stir continuously at 50°C with a stirring speed of 200r / min, add 0.4g of polyacrylic acid to 75g of dioxane solvent, keep the temperature constant, continue to stir to dissolve completely, and obtain a mass fraction of 0.53 % liquid glue, put the liquid glue at 55°C for standby;

[0043] Step 2. Continue stirring at 80° C. and a stirring speed of 240 r / min, add 6 g of nitroguanidine to 240 g of distilled water, and stir for 30 minutes to form a uniform solution to obtain a nitroguanidine solution with a mass fraction of 2.44%.

[0044] Step 3: Control the temperature at 85°C and keep the temperature constant, add 93.4g of TKX-50 to the nitroguanidine solution obtained in Step 2, stir at a stirring speed of 250r / min to evenly suspend it, and obtain a suspension;

[0045] Step 4. Under the condition of stirring at a rotating speed of 90r / min, raise the temperature of the su...

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Abstract

The invention relates to a method for coating TKX-50 with nitroguanidine, and belongs to the field of energy-containing materials. The method comprises the following steps of recrystallizing and coating a macromolecular polymer coated with the TKX-50 by a solution suspension method; firstly, coating the TKX-50 explosive by the passivated nitroguanidine explosive by a solution recrystallizing method, and controlling the nucleating and growth process of energy-containing crystal to improve the form of the coated surface of the energy-containing crystal; then, coating a layer of macromolecular polymer to the coated surface of the nitroguanidine. The method has the advantages that the problem of compatibility between the macromolecule and the surface of the TKX-50 explosive is solved, the explosion property of the TKX-50 explosive self is maintained, and the mechanical sensing degree is reduced; the technology and method have not been reported in the explosive passivating field, and the passivated TKX-50 explosive is a head of high-energy explosive mixture.

Description

technical field [0001] The invention relates to a method for coating TKX-50 with nitroguanidine, belonging to the field of energetic materials. Background technique [0002] The tetrazole ring nitrogen content exceeds 80.0%, which is the ring structural unit with the highest nitrogen content that can exist stably at present. Tetrazole compounds, especially bicyclic and polycyclic tetrazole derivatives, because of their high energy content such as N-N bonds and C-N bonds The bonds are abundant, the ring tension is high, and the molecular density is high, the enthalpy of formation is high, the amount of gas generation is high, the sensitivity is low, and the thermal stability is good. The detonation products are mostly clean and environmentally friendly N 2 and other advantages, so it is an ideal energetic compound. 1,1'-dihydroxy-5,5'-bitetrazole dihydroxylamine salt (also known as TKX-50) is this new type of high energy density compound, with a nitrogen content of 59.3% and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00C06B21/00C06B25/34
CPCC06B21/0008C06B23/005C06B25/34
Inventor 刘吉平刘莉莉刘晓波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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