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A kind of method of nitroguanidine granulation coating TKX-50

A TKX-50, nitroguanidine technology, applied in explosives, offensive equipment, non-explosive desensitizers/passivators, etc., can solve problems such as low mechanical sensitivity, achieve low friction and impact sensitivity, safe and reliable operation, Simple effect of preparation device

Active Publication Date: 2020-09-11
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nitroguanidine (NQ) is a white needle-like crystal with extremely low mechanical sensitivity. The impact sensitivity and friction sensitivity are 0%. It can be used as a passivator for mixed explosives, which will not only improve the detonation performance of mixed explosives, It also realizes the reduction of sensitivity without causing too much loss of energy. This research has not been reported at home and abroad.

Method used

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  • A kind of method of nitroguanidine granulation coating TKX-50

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Experimental program
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Effect test

Embodiment 1

[0022] A method of nitroguanidine granulation coating TKX-50, at 40 ℃, 160r / min stirring speed, 5g polyvinyl butyral is added to 800g anhydrous ethyl acetate solvent, keep the temperature constant, Stir to dissolve it completely, and obtain a liquid glue with a mass fraction of 0.62%, and divide the liquid glue into two parts of 402.5g and 402.5g; at a temperature of 20°C, add 945g of TKX-50 into the container and keep the temperature No change, add 402.5g of liquid glue for kneading, after kneading evenly, add 50g of nitroguanidine and 402.5g of liquid glue, after kneading again, granulate to obtain a coating of granular TKX-50; at a temperature of 40 ℃, dry for 4 hours, and sieve the coating with a 200-mesh sieve to obtain TKX-50 coated with nitroguanidine granulation.

[0023] Obtain 998.1g of the TKX-50 white granule product after nitroguanidine granulation and coating, the yield rate is 99.81%, the impact explosion probability is 10% (10kg drop weight), the characteristic...

Embodiment 2

[0025] A method of nitroguanidine granulation coating TKX-50, at 55 ° C, 200r / min stirring speed, 6g polymethyl acrylate is added to 800g anhydrous ethyl acetate solvent, keep the temperature constant, stir to make It is completely dissolved to obtain a liquid glue with a mass fraction of 0.74%, and the liquid glue is divided into two parts: 403g and 403g; at a temperature of 25°C, add 934g of TKX-50 to the container, keep the temperature constant, and add 403g of liquid glue was kneaded. After kneading evenly, 60g of nitroguanidine and 403g of liquid glue were added. After kneading again, granulate to obtain a granular TKX-50 coating; at a temperature of 35°C, dry for 3 hours, The coating is sieved with a 230-mesh sieve to obtain TKX-50 coated with nitroguanidine granulation.

[0026] Obtain 994g of the TKX-50 white granule product after nitroguanidine granulation coating, productive rate is 99.4%, impact explosion probability is 11% (10kg drop weight), characteristic fall he...

Embodiment 3

[0028] A method for coating TKX-50 with nitroguanidine granulation: at 60°C and 190r / min stirring speed, add 4g of polyacrylic acid into 750g of ethanol solvent, keep the temperature constant, stir to dissolve completely, and obtain the mass The fraction is 0.53% of the liquid glue, and the liquid glue is divided into two parts of 377g and 377g; at a temperature of 30°C, add 936g of TKX-50 into the container, keep the temperature constant, add 377g of the liquid glue for kneading, After kneading evenly, add 60g nitroguanidine and 377g liquid glue, knead again evenly, and granulate to obtain a granular TKX-50 coating; The material was sieved with a 260-mesh sieve to obtain TKX-50 after nitroguanidine granulation and coating.

[0029] Obtain 993g of the TKX-50 white granule product after nitroguanidine granulation and coating, the productive rate is 99.3%, the impact explosion probability is 9% (10kg drop weight), the characteristic drop height is 25cm (25kg drop weight), the fr...

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Abstract

The invention relates to a method for granulating and coating dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) with nitroguanidine, and belongs to the field of energetic materials. The method comprises the steps: adding polyvinyl butyral to an anhydrous ethyl acetate solvent at the temperature of 40 DEG C, keeping the temperature constant, stirring to make polyvinyl butyral completely dissolved, to obtain a 0.62 mass% liquid glue, and dividing the liquid glue into two parts; under a condition of the temperature of 20 DEG C, adding TKX-50 to a container, keeping the temperature constant, adding one part of the liquid glue, kneading, after kneading uniformly, adding nitroguanidine and the other part of the liquid glue, kneading and granulating, and thus obtaining the TKX-50 after nitroguanidine granulation and coating. Not only is the explosion performance of the TKX-50 explosive itself maintained, but also the mechanical sensitivity is reduced, and the problem of reduction ofthe explosion performance of explosives with addition of an insensitive binder is well solved.

Description

technical field [0001] The invention relates to a method for granulating and coating 1,1'-dihydroxy-5,5'-bitetrazolium dihydroxylamine salt (TKX-50) with nitroguanidine, belonging to the field of energetic materials. Background technique [0002] TKX-50 is a new type of cage-shaped high-energy explosive. It is a white crystal granular high-energy and low-sensitivity tetrazole energetic ion salt. Hammer), with a friction explosion probability of 24% (3.92MPa, 90°), has the characteristics of high energy density and high safety, is a new type of energetic material developed in recent years, and has attracted extensive attention in the global application field. Numerous literatures have recorded the optimization of synthesis process conditions and the theoretical calculation of formulations of TKX-50, but there are few research literatures on the application of insensitivity and charging technology. The early deactivation coating technology of explosives mainly includes polyme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B45/22C06B23/00C06B21/00
CPCC06B21/0083C06B23/005C06B45/22
Inventor 刘吉平刘莉莉李志华阮建郝尧刚刘晓波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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