Display shell preparation method for increasing explosion diameter

A technology for fireworks bombs and bud opening medicines, which is applied in the field of preparation of fireworks bombs that increase the diameter of bud openings, and can solve problems such as unfavorable safety and environmental protection, residues of medicine grains, and particle adhesion, so as to improve viewing effects and reduce smoke , The effect of increasing the firing rate

Inactive Publication Date: 2013-07-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the granular micro-pore smokeless fireworks are directly used as the bud-opening drug for the production of fireworks shells, the particles are likely to generate static electricity and adhere to the surroundings of the shells of the fireworks, which brings some difficulties to the charge and also brings some difficulties in the production process. Security risks
In addition, the use of granular fireworks charges often leads to the problem of drug particles remaining during the discharge process, which is also unfavorable to the safety and environmental protection of the discharge process.

Method used

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  • Display shell preparation method for increasing explosion diameter
  • Display shell preparation method for increasing explosion diameter
  • Display shell preparation method for increasing explosion diameter

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preparation example Construction

[0015] combine figure 1 , a kind of preparation method of the display shell that improves opening bud diameter, comprises the following steps:

[0016] Step 1, bonding the granular micropore medicine into a pellet-shaped bud-opening medicine, the pellet-shaped bud-opening medicine is formed by using granular micropore fireworks medicine through an organic adhesive, and the described The diameter range of the pellet-shaped bud-opening medicine is 5mm-20mm, and the organic binder is an aqueous solution of a water-soluble binder, an aqueous solution of starch or modified starch, an ethanol solution of ethyl cellulose, polyvinyl butyral The ethanol solution containing nitrocellulose, the sol or the emulsion containing nitrocellulose, the mass percentage of the pellet-shaped bud-opening drug is composed of 82%-99% of the granular micro-pore fireworks drug, and the organic binder is 0.2-10%.

[0017] The granular microporous fireworks medicine is the prior art of the inventor's pat...

Embodiment 1

[0028] combine figure 1 , select the 3-inch fireworks bomb as an example, use the pellet-shaped drug blocks bonded by granular micro-aerosols as the bud-opening drug, the diameter of the outer spherical shell is 76mm, the thickness is 3mm, and the diameter of the bright beads is 10mm.

[0029] The preparation method and process of the granular micro-aerosol are as follows: the granular micro-pore firework drug is prepared by using single-base waste gunpowder containing 97.0% of nitrocellulose and 1.0% of diphenylamine (stabilizer) as raw materials. 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-6...

Embodiment 2

[0036]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 emulsification and foaming operation under stirring state, continue to add water in this step, the amount of water added is 6 times of the mass of the raw material granules, and then continue to stir at 50-60°C for 30min-60min, 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 minutes ...

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Abstract

The invention discloses a display shell preparation method with pellet-shaped smokeless firework explosive as the explosive. The method comprises the following steps that first bright beads are lined on the inner side of the spherical shell of the display shell, and then the pre-prepared pellet-shaped explosive and a small amount of explosive which contains magnesium-aluminum alloy powder are mixed together, wrapped by a piece of thin paper and charged to the semi-spherical shell; the other half shell of the display shell is filled in the same charging order; and finally the two halves of spherical body are buckled, and the paper is pasted on the surface of the shell and dried. According to the preparation method of the display shell, area ignition is facilitated, the problems that the burning is not full or medicine particles are left when granular microporous firework explosive serves as the explosive are thoroughly solved, the explosion diameter of the display shell is greatly increased, and the ornamental effect is effectively improved.

Description

technical field [0001] The invention belongs to the bud-opening technology of fireworks bombs, in particular to a method for preparing fireworks bombs which increases the diameter of bud opening. Background technique [0002] At present, due to its environmental protection and safe use, smokeless fireworks have become an ideal substitute for black powder for fireworks or other propellant charges, and have been highly valued by the fireworks and firecracker industry. However, directly adopting the granular smokeless fireworks anther medicine with a micropore structure as the bud opening drug, the bud opening effect is not ideal. The success rate is low, and the explosion diameter is relatively small, which cannot reach the discharge effect of the traditional budding medicine with black powder as the main component. In the preparation process of granular microporous fireworks, the discharge effect can be improved by adding sensitizers or ignition performance enhancers, but th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B4/30
Inventor 李生有潘仁明蔺向阳
Owner NANJING UNIV OF SCI & TECH
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