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Pyrotechnic composition for fireworks and crackers and application of pyrotechnic composition

A technology for fireworks and firecrackers and pyrotechnic powder, which is applied in the directions of inorganic oxyhalide salt explosive compositions, alkali metal compositions, explosives, etc., can solve the problems of slow burning speed, impure impurities, easy moisture absorption, etc., and achieves improved impact sensitivity and The effect of friction sensitivity, improving safety and product quality, and reducing moisture absorption

Pending Publication Date: 2022-04-15
张宏善
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reducing agents used in the formulas of the fireworks and firecrackers industry mainly include charcoal powder, hemp stalk carbon powder, metal powder, etc. However, hemp stalk charcoal is produced from waste hemp stalks produced by planting hemp plants through high temperature and isolated air, and is easy to absorb moisture. And the product contains a large amount of impurity, slow burning speed, and the unit energy released by the reaction with oxidant is not high, the shelf life of the produced fireworks and firecrackers is short; fireworks
Metal powders such as aluminum powder and aluminum-magnesium alloy powder are easily oxidized by moisture, and the energy released by oxidation will affect the safety of fireworks and firecrackers. The cost is high and the economic benefits produced are low; it is mainly used in the production of explosives and firecrackers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Application of polystyrene-containing composition in military nitrate: a kind of munitions nitrate, comprising: 75% potassium nitrate, 7% sulfur, 18% polystyrene powder; Mixed, pressurized, granulated and polished.

[0027] At present, the military nitrate production process on the market is mainly made by mixing about 75% of potassium nitrate, about 7% of sulfur, and about 18% of hemp charcoal, pressurizing, granulating, and polishing; the reaction principle is: 2KNO 3 +S+3C=K 2 S+N 2 +3CO 2 , where sulfur acts as an oxidizing agent in the reaction and acts as a binding agent at a melting point of 120°C. Here, the ratio formula of potassium nitrate 75%, sulfur 7%, and hemp stalk charcoal 18% was used as a control group for effect comparison.

[0028] In Example 1 of the present invention, polystyrene powder is used to completely replace hemp stalk charcoal, which has the following advantages: 1. The moisture absorption rate is low, because polystyrene is insoluble ...

Embodiment 2

[0030] Application of polystyrene-containing composition in military industrial powder: a military industrial powder, comprising: potassium nitrate 75%, sulfur 7%, polystyrene powder 18%; its preparation is to mix each raw material Prepared by mixing.

[0031] Military industrial powder is the former product of military industrial nitrate, and it is also a coating medicine for wrapping nitrate. By igniting the military industrial powder to generate high temperature, the flame metal ions in the bright ions, such as strontium carbonate, produce a red flame reaction. The formula of military industrial powder is the same as that of military nitrate. The formula is the same, and the chemical reaction equation is the same. Here, the ratio formula of potassium nitrate 75%, sulfur 7%, and hemp charcoal 18% is also used as a control group for effect comparison.

[0032] In Example 2 of the present invention, polystyrene powder is used to replace hemp stalk charcoal to produce military...

Embodiment 3

[0034] Application of polystyrene-containing composition in lead wire: a quick lead wire agent, comprising: 50% potassium perchlorate, 18% polystyrene powder, 2% manganese dioxide, and 20% sodium benzoate .

[0035] In the production process of the lead wire required for fireworks and firecrackers on the market, potassium perchlorate, sulfur, hemp stick charcoal, and flute sound agent are generally used as raw materials; specifically, taking the fast lead wire as an example, its formula is (mass percentage): potassium perchlorate 50% About 20% hemp charcoal, about 30% potassium hydrogen terephthalate. Here, the ratio formula of potassium perchlorate 50%, hemp stalk charcoal 20%, and potassium hydrogen terephthalate 30% was used as a control group for effect comparison.

[0036] Adopt manganese dioxide, sodium benzoate, polystyrene combination to replace hemp stalk charcoal and potassium hydrogen terephthalate to produce fast lead in the embodiment 3 of the present invention, ...

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Abstract

The invention discloses a pyrotechnic composition for fireworks and crackers and application thereof, and relates to the technical field of fireworks and crackers, the pyrotechnic composition comprises the following components by mass: 50-77% of an oxidant, 10-20% of a high-molecular polymer solid material, 0-3% of manganese dioxide, and 0-30% of sodium benzoate; wherein the oxidant is potassium perchlorate or potassium nitrate or a combination thereof. The high-molecular polymer solid material, the manganese dioxide and the sodium benzoate are adopted as reducing agents to replace charcoal powder, hemp stalk carbon powder, metal aluminum powder and the like adopted in an existing firework and cracker formula, the moisture absorption rate of firework and cracker products is remarkably reduced, the shelf life is prolonged, the impact sensitivity and friction sensitivity of gunpowder can be effectively improved, and the firework and cracker production efficiency is improved. The safety and the product quality of firework and cracker production are improved, the combustion energy is large, and fire welding is easy; and the produced fireworks and crackers not only meet the national standard, but also meet the newest standard of metal-free explosives exported for American.

Description

technical field [0001] The invention relates to the technical field of fireworks and firecrackers, in particular to a pyrotechnic composition for fireworks and firecrackers and an application thereof. Background technique [0002] Modern fireworks and firecrackers use pyrotechnics as raw materials, which can produce special effects after being produced by technology. The pyrotechnic composition mainly includes reducing agents and oxidizing agents, and may also be added with binders and functional additives. At present, the reducing agents used in the formula of fireworks and firecrackers mainly include charcoal powder, hemp stalk carbon powder, metal powder, etc. However, hemp stalk charcoal is produced from waste hemp stalks produced by planting hemp plants through high temperature and isolated air, and it is easy to absorb moisture. And the product contains a lot of impurity, the burning speed is slow, the unit energy released by the reaction with the oxidant is not high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B29/12C06B29/02C06B31/10C06B31/04
Inventor 张宏善
Owner 张宏善
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