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Thermocuring intelligent gunpowder and preparation method thereof

A heat-curing and gunpowder technology, applied in explosives processing equipment, explosives, offensive equipment, etc., can solve problems such as difficulty in adapting to the combat environment, lack of environmental perception and response characteristics, etc.

Active Publication Date: 2022-06-07
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The gunpowder prepared above, whether it is conventional stretching process, casting or 3D printing process, the energetic material prepared is a three-dimensional material with a predetermined shape, and can only burn or explode in a predetermined way after excitation, without environmental awareness. , response characteristics, it is difficult to adapt to the complex and ever-changing combat environment

Method used

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  • Thermocuring intelligent gunpowder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]The formula of this example is as follows: 6% hydroxyl terminated copolyether (HTPE), 12.5% ​​glycidyl azide polyether (GAP); 2% toluene diisocyanate (TDI); 0.1% dibutyltin dilaurate (T12); Caprolactone 4% (molecular weight 80000~90000, melting point 71℃); RDX crystal 30% (particle size 0.2-40μm); potassium perchlorate (AP) 15%; aluminum powder 20% (particle size 1-50μm), nitroglycerin 10% ; Graphene 0.4%.

[0037] Preparation steps:

[0038] (1) Binder preparation: add HTPE, GAP, TDI, NG, PCL to the stirrer, set the temperature above the melting point of the crystalline polymer (75-80°C), the speed is 200 rpm, and the time is 1-2h .

[0039] (2) Preparation of gunpowder formula: add RDX, AP, aluminum powder and graphene to the prepared binder, keep the rotation speed and temperature unchanged, add T12 after stirring for 1 h, and continue stirring for 0.5 h. Get the Smart Gunpowder recipe.

[0040] (3) Using an extrusion 3D printer (preferably a needle diameter of 0....

Embodiment 2

[0044] Different from Example 1, the formula of this example is as follows: 5% of hydroxy-terminated butadiene (HTPB), 18% of glycidyl azide polyether (GAP); 3% of diphenylmethane diisocyanate (MDI) ; triphenyl bismuth (TPB) 0.2%; polycaprolactone 4% (molecular weight 50000-60000, melting point 64°C) 5%; octogen (RDX) crystal 62% (particle size 40-70μm); nitroglycerin ( NG) 6.4%; carbon nanotubes 0.4%.

[0045] The difference between the preparation process and Example 1 is that the mixing temperature is set at 70-75°C.

Embodiment 3

[0049] Different from Example 1, the formula of this example is as follows: 5% hydroxyl terminated copolyether (HTPE), 10% glycidyl azide polyether (GAP); 1% toluene diisocyanate (TDI); Butyl tin (T12) 0.1%; polycaprolactone 4% (molecular weight 5000-10000, melting point 37°C) 5%; CL-20 crystal 45% (particle size 80-110μm); potassium perchlorate (AP) 10%; aluminum powder 15 % (particle size 150-200 μm); nitroglycerin (NG) 8.5%; ferric tetroxide 0.4%.

[0050] The difference between the preparation process and Example 1 is that the mixing temperature is set at 45-50°C.

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Abstract

The invention discloses thermocuring intelligent gunpowder and a preparation method thereof. The disclosed gunpowder comprises a basic gunpowder, a crystalline polymer and a stimuli-responsive additive; the basic gunpowder comprises a binder, a solid explosive, metal powder, a plasticizer and a thermal initiator. The preparation method comprises the following steps: melting and mixing a binder and a crystalline polymer at a certain temperature to obtain a mixture; and adding the solid explosive, the metal powder and the stimulation response additive into the obtained mixture, uniformly mixing, adding the thermal initiator, and continuously uniformly mixing to obtain the intelligent programmable gunpowder. The device can endow the gunpowder with stimulation response capability, has environment perception and feedback capability, and endows the gunpowder with intelligent deformation.

Description

technical field [0001] The invention relates to a heat-curing intelligent gunpowder, in particular to an energetic material suitable for 3D printing and extrusion molding processes that can be deformed autonomously under the stimulation of temperature, humidity, electric field, magnetic field and the like. Background technique [0002] Gunpowder is used as the energy source for weapon launch, and it converts its own chemistry into heat energy through combustion, and generates a large amount of gaseous products at the same time. The gunpowder burns controllably in the barrel weapon or rocket engine, and a large amount of high-temperature and high-pressure gas is generated to expand and do work, and finally convert the chemical energy of the gunpowder into the kinetic energy of the weapon. At present, the gunpowder manufacturing technologies used at home and abroad mainly include pouring, pressing, and new 3D printing technology. The prepared gunpowder with a specific structur...

Claims

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Application Information

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IPC IPC(8): C06B33/12C06B23/00C06B33/08C06B21/00
CPCC06B33/12C06B33/08C06B23/00C06B23/001C06B21/0033C06B21/0058C06B21/0075
Inventor 胡睿杨伟涛李曼曼杨建兴
Owner XIAN MODERN CHEM RES INST