Slight smoke type tricolor fireworks powder particles and application

A technology of three primary colors and fireworks, applied in the field of fireworks medicine, can solve the problems of complicated formula design, low production efficiency, and difficulty in standardization, and achieve simplified and standardized production links, less smoke production, and easy control of quality stability. Effect

Active Publication Date: 2016-03-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the formula design of traditional fireworks products with colored flames is cumbersome, especially for the control of the color of fireworks. A formula must be designed for each color of the drug, and the raw materials used for each color of the drug are different, so it is difficult to achieve standardization , the production efficiency is relatively low

Method used

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  • Slight smoke type tricolor fireworks powder particles and application
  • Slight smoke type tricolor fireworks powder particles and application
  • Slight smoke type tricolor fireworks powder particles and application

Examples

Experimental program
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preparation example Construction

[0033] A preparation method of micro-smoke type three-color fireworks drug granules, comprising the following steps: dissolving nitrocellulose or smokeless powder containing nitrocellulose into a solvent to obtain a sol containing nitrocellulose, emulsifying the sol into an aqueous solution of dyeing agent, and then Disperse the obtained emulsion again into an aqueous solution of the same type and concentration as the above-mentioned dye solution to disperse into balls. The emulsion is dispersed into spherical droplets, followed by solvent removal and material separation to obtain a spherical solution containing nitrocellulose and dye aqueous solution. The granules are dried to obtain smoky three-color fireworks drug granules. The type and concentration of the aqueous dye solution added in the emulsification process and the dispersion into ball process are the same. Strontium nitrate, copper chloride, barium chloride and barium nitrate are selected as the dyeing agent, the red...

Embodiment 1

[0045] Use single-base waste powder with a nitrocellulose content greater than 85% as the raw material, add it to the molding equipment, add ethyl acetate solvent 10 times the weight of the single-base waste powder under stirring, and stir and dissolve at 45°C-50°C 30-60min, form polymer sol; Carry out emulsification and foaming operation under stirring state, add the copper chloride aqueous solution that mass concentration is 5% in this step, the amount of the copper chloride aqueous solution that adds is the quality of single-base waste gunpowder 6 times, and then continue to stir at 50-60°C for 30min-60min, the polymer sol forms an emulsion, when the system temperature is adjusted to 65°C-68°C, add 12 times the mass of single-base waste powder containing dispersant and 5 % copper chloride aqueous solution is added to the system to disperse into balls, gelatin is used as a dispersant, and the amount of dispersant added is 0.5% of the total mass of water. Continue to maintain...

Embodiment 2

[0052] Using the same process as in Example 1, adopting single-base waste gunpowder with a nitrocellulose content greater than 85% as a raw material, using strontium nitrate as a dyeing agent, the concentration of the strontium nitrate solution used in the emulsification foaming and ball forming medium is all 5%. .

[0053] Performance parameters:

[0054]

[0055] With the color value T as the abscissa and the relative intensity I as the ordinate, use IMAGE-PRO software to analyze the color components of the flame picture into a two-dimensional curve such as Figure 6 (R in the figure represents the red component, G represents the green component, and B represents the blue component) for intuitive analysis and color characterization.

[0056] By flame picture ( Figure 5 ) It can be clearly seen that the flame is red and has high purity, which can meet the performance requirements of the base color medicine. From Figure 6 According to the analysis, the relative intens...

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Abstract

The present invention discloses slight smoke type tricolor fireworks powder particles and application. The fireworks powder particles are obtained by the following steps: dissolving nitrocotton and a smokeless powder with the nitrocotton at first; emulsifying, foaming and prilling; then removing a solvent and separating materials; and finally drying to obtaining the fireworks powder particles. The obtained particles are mixed according to the relative mass ratio of (1-8): (1-8): (1-8) to obtain colorful fireworks powder. According to the slight smoke type tricolor fireworks powder particles and the application provided by the present invention, a color addition principle is utilized; the slight smoke type tricolor fireworks powder particles are mixed to match colors; the circumstance that a formula is designed independently according to various colors can be avoided; and only three basic powder particles are required to be produced. The three raw material powders are combined to achieve the colorful effect, the preparation process can be simplified, the product quality is stabilized, the production efficiency is greatly improved, and the production links are simplified.

Description

technical field [0001] The invention belongs to the technology of fireworks medicine, in particular to a small-smoke-type three-primary-color fireworks medicine granule and a small-smoke-type three-primary-colors little-smoke medicine granule mixed to prepare a small-smoke type color fireworks medicine. Background technique [0002] Traditional fireworks products are similar, they all contain black gunpowder, medicine primer, and effect medicine, and then add some luminescent and coloring agents to show colorful colors. However, when traditional fireworks products are set off, a large amount of sulfur oxides, nitrogen oxides, and metal particles will be produced. These are all serious air pollutants, which are not accepted in today's society. In addition, due to the application of black powder, the smoke concentration is very high, which seriously affects its discharge effect. Smoke and solid particles produced by combustion are suspended in the air in the form of aerosols,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/20
Inventor 郭祥友廖林坤马军喜蔺向阳
Owner NANJING UNIV OF SCI & TECH
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