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Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof

A technology of mixing explosives and modeling powder, which is applied in the direction of explosives processing equipment, explosives made of a single substance, explosives, etc. It can solve the problems of affecting the life and use effect of weapons and equipment, acid corrosion of weapons and equipment, threatening the safety of personnel and weapons and equipment, etc. Achieve the effect of realizing large-scale production, low production cost and ensuring integrity

Active Publication Date: 2021-11-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidity problem of NTO single-substance explosives will inevitably be reflected in the NTO-based mixed explosive molding powder, which will cause acid corrosion of NTO-based mixed explosives on weapons and equipment, directly affect the life and use effect of weapons and equipment, and even threaten personnel and safety of weaponry

Method used

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  • Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof
  • Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof
  • Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof

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preparation example Construction

[0050] The present invention also provides a method for preparing the above-mentioned acid-inhibited NTO-based mixed explosive molding powder, comprising the following steps:

[0051] (1) Add 3-nitro-1,2,4-triazol-5-one into the solvent, then heat up and dissolve to obtain 3-nitro-1,2,4-triazol-5-one solution;

[0052] Wherein, the mass volume ratio of 3-nitro-1,2,4-triazol-5-one to solvent is (93~100)g: (350~750)mL. The ratio is 1: (0.1 ~ 0.5) mixed solution, the temperature is raised to 80 ° C;

[0053] (2) Add the acid-suppressing protective film material and the surfactant to the above-mentioned 3-nitro-1,2,4-triazol-5-one solution, stir and mix first, then continue to stir and cool down, then filter and dry, NTO-inner shell particles can be obtained (that is, NTO particles with an acid-suppressing protective layer);

[0054] Wherein, the mass ratio of the acid-suppressing protective film material, the surfactant and the 3-nitro-1,2,4-triazol-5-one is (0.001~0.02):(0.001...

Embodiment 1

[0063] Embodiment 1 of the present invention provides a method for preparing acid-inhibited NTO-based mixed explosive molding powder, which specifically includes the following steps:

[0064] (1) Dissolve 100g of NTO in a mixed solvent of 400mL of water and 100mL of DMF at room temperature, and then raise the temperature of the solvent to 80°C to completely dissolve NTO in the solvent to obtain an NTO solution;

[0065] (2) Add 1 g of polyester diol and 0.4 g of Tween-80 to the NTO solution, stir thoroughly for 60 min, then lower the temperature to below 10 °C at a stirring rate of 400 r / min and a cooling rate of 30 °C / min, filter rapidly, and dry Dry to obtain NTO particles coated with polyester diol;

[0066] (3) Put 4g of Estane and 6g of nitroxylnitroamine into a conical flask, add 60mL of ethyl acetate, stir at 250r / min at room temperature for 1h, let it stand for 0.5h to fully dissolve, and configure it as a bonded agent system solution;

[0067] (4) At room temperatur...

Embodiment 2

[0069] Embodiment 2 of the present invention provides a method for preparing acid-inhibited NTO-based mixed explosive molding powder, which specifically includes the following steps:

[0070] (1) Dissolve 95g of NTO in a mixed solvent of 600mL of water and 60mL of DMSO at room temperature, and then raise the temperature of the solvent to 80°C to completely dissolve NTO in the solvent to obtain an NTO solution;

[0071] (2) Add 1.5g polypropylene alcohol and 0.4g Span-40 to the NTO solution, and after fully stirring for 40min, lower the temperature of the system to below 10°C at a stirring rate of 300r / min and a cooling rate of 50°C / min, and rapidly filter, Dry to obtain NTO particles coated with polyacryl alcohol;

[0072] (3) Put 2.4g of cellulose acetate butyrate and 3.6g of diethyl phthalate into a conical flask, add 50mL of ethyl acetate, stir at 150r / min for 2h, and stir at 15°C; After 2 hours, it is configured into a binder system solution;

[0073] (4) At room tempera...

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Abstract

The invention discloses acid inhibition type NTO-based mixed explosive molding powder and a preparation method thereof. The preparation method comprises the following steps: firstly, taking span, Tween, methoxy polyethylene glycol and polyethylene glycol fatty acid ester as surfactants; coating NTO with polyester glycol, polycaprolactone glycol, polyether polyol, polypropylene glycol, polyvinyl alcohol and poly(ethylene glycol) methacrylate as acid inhibition protective film materials, and preparing NTO particles with acid inhibition protective films; and heating the NTO-based mixed explosive powder and deionized water, dropwise adding a binder system, stirring, dissolving, cooling and filtering to obtain the acid inhibition type NTO-based mixed explosive molding powder. The acidic inhibition type NTO-based mixed explosive molding powder prepared by the invention is compact and smooth, has stable crystal form, has mechanical sensitivity which is not greatly different from that of the molding powder obtained by the existing method, and can greatly reduce the acidity of NTO and the molding powder thereof. The method is simple in process, mild in experiment condition, low in production cost and easy to realize large-scale production.

Description

technical field [0001] The invention relates to the technical field of composite energetic materials, in particular to an acid-suppressed NTO-based mixed explosive molding powder and a preparation method thereof. Background technique [0002] 3-nitro-1,2,4-triazol-5-one (NTO) is a high-energy insensitive elemental explosive, its energy level is comparable to RDX, and its theoretical detonation velocity and detonation pressure are 8550m / s and 34.9GPa, respectively; Its safety level is equivalent to that of TATB, commonly known as "wood explosives", with lower mechanical sensitivity, thermal sensitivity and shock wave sensitivity. In addition, NTO also has the characteristics of simple synthesis process and low manufacturing cost. Based on the above advantages, NTO has become one of the most promising elemental explosives at this stage, and has attracted widespread attention from scholars at home and abroad. At present, NTO has been widely used in the insensitive ammunition ...

Claims

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Application Information

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IPC IPC(8): C06B49/00C06B21/00
CPCC06B49/00C06B21/0083
Inventor 束庆海王俊峰王子锋尚凤琴邹浩明王东旭
Owner BEIJING INSTITUTE OF TECHNOLOGYGY