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Modular smokeless firework ammunition capable of improving dampproof performance and preparation method for modular smokeless firework ammunition

A technology with moisture-proof performance and modularization, which is applied in the direction of nitration explosive components, explosives, offensive equipment, etc., can solve the problems of moisture absorption of drug blocks, poor stability of fireworks products' launch height and discharge effect, etc., to reduce moisture absorption performance and environmental protection Pollution, effect of improving stability

Inactive Publication Date: 2012-07-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the granular microporous propellant is prepared into a modular propellant, although its surface area is lower than that of the granular smokeless fireworks, there are still a large number of small pores on the surface, and the external moisture can also diffuse through the gaps between the particles. Into the interior of the modular smokeless fireworks propellant, after a period of storage, the propellant block has obvious moisture absorption phenomenon, resulting in poor launch height or stability of the discharge effect of the fireworks product

Method used

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  • Modular smokeless firework ammunition capable of improving dampproof performance and preparation method for modular smokeless firework ammunition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Granular microporous fireworks were prepared from single-base waste gunpowder containing 97.0% of nitrocellulose and 1.0% of diphenylamine (stabilizer). The single-base waste powder is preliminarily crushed in the presence of a large amount of water, and the particle diameter is controlled to be no more than 3mm. The single-base waste powder with water is added to the forming reactor, and the moisture content of the wet single-base waste powder is 15%. -30%, add ethyl acetate solvent 10 times the mass of single-base waste propellant powder under stirring, stir and dissolve at 45°C-60°C for 30-60min, and then continuously add water to the material system in the forming reactor Carry out the emulsification and foaming operation under the stirring state, continue to add water in this step, the quality of the added water is 6 times of the mass of the single-base spent powder. Then, continue to stir at 50-60°C for 30min to 60min, and when the temperature of the material in t...

Embodiment 2

[0041] The granulated microporous fireworks medicine is prepared by using the raw material medicine granules with nitrocellulose content of 99% and diphenylamine (stabilizer) content of 0.5%. First add the raw material medicine pellets into the forming reactor, add ethyl acetate solvent 10 times the mass of the raw medicine medicine pellets under stirring, stir and dissolve at 45°C-60°C for 30-60min, and then continuously pour into the system Add water; carry out the emulsification and foaming operation under stirring, continue to add water in this step, the amount of water added is 6 times the mass of the raw material drug granules, and then continue to stir at 50-60°C for 30min-60min, and the system When the temperature is adjusted to 65°C-68°C, an aqueous solution containing 0.5% gelatin, which is 6 times the mass of the raw material granules, is added into the material system to disperse into balls. Continue to maintain the temperature at 65°C-68°C, and disperse for 30 min...

Embodiment 3

[0046] Granular micropore fireworks drug was prepared by using retired double-base drug containing 65% of nitrocellulose, 30% of nitroglycerin (plasticizer) and 2.0% of 2-nitrodiphenylamine (stabilizer). Add ethyl acetate solvent 8 times the mass of the pellets under stirring, stir and dissolve at 45°C-50°C for 30-60min, then continuously add 0.1% potassium nitrate aqueous solution to the system, potassium nitrate as ignition performance Strengthening agent; emulsification and foaming operation is carried out under agitation. In this step, continue to add 0.1% potassium nitrate aqueous solution. The amount of potassium nitrate aqueous solution added is 6 times the mass of the pellets, and then continue at a temperature of 50-60°C Stir for 30min to 60min, and when the temperature of the system is adjusted to 65°C-68°C, add an aqueous solution containing dispersant and 0.1% potassium nitrate 6 times the mass of the raw material drug into the system to disperse into balls, use bon...

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Abstract

The invention discloses a modular smokeless firework ammunition capable of improving the dampproof performance. The modular smokeless firework ammunition comprises nitrocotton which has a large number of tiny holes, a block-type appearance and dampproof performance. The preparation method for the modular smokeless firework ammunition capable of improving the dampproof performance comprises the following steps of: preparing granular micro-hole firework ammunitions; mixing an organic adhesive with the dampproof characteristic, an ignition performance enhancer and the granular micro-hole firework ammunitions; preparing an ammunition block with a specific shape by the mixed materials; then attaching a layer of adhesive thin film with the dampproof performance to the surface of the ammunition block by an immersing or coating method, wherein the adhesive coated on the surface is the same as that of the adhesive for forming the modular ammunition; and finally drying. By adopting the waterproof adhesive and the preparation method, the dampproof performance of the modular smokeless firework ammunition can be improved greatly, and the problem that the firing effect of a firework product prepared by the smokeless firework ammunition is unstable is solved.

Description

technical field [0001] The invention belongs to the technology of fireworks and firecrackers, in particular to a modularized smokeless fireworks medicine with improved moisture-proof performance and a preparation method thereof. Background technique [0002] Black powder is a traditional fireworks propellant that has been used for hundreds of years. Due to the large amount of smoke and polluting gases produced during the fireworks display, research on environmentally friendly fireworks with less smoke has attracted attention in recent years. The pyrotechnic powder is a microporous propellant with a microporous structure obtained through a spheroidization process as a raw material, and a modular smokeless fireworks propellant is made by further bonding and molding methods, because its apparent burning speed can be in a wide range It can be adjusted to achieve better launch effects on most fireworks varieties, and the comprehensive performance reaches or exceeds the level of b...

Claims

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Application Information

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IPC IPC(8): C06B25/20
Inventor 潘仁明蔺向阳李生有
Owner NANJING UNIV OF SCI & TECH
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