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Sulfur-free and chloride-free pyrotechnic composition

A pyrotechnic composition technology, applied in the field of sulfur-free and chlorine-free pyrotechnic composition, can solve the problems of unable to meet the needs of safe and environmentally friendly fireworks, serious environmental pollution, low reactivity, etc., to reduce the generation of harmful gases, without Effects of environmental pollution and low mechanical sensitivity

Pending Publication Date: 2019-01-15
DANCING FIREWORKS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the products provided by the above-mentioned patents all use perchlorate oxidizers. Although perchlorate has a higher melting point and lower reactivity than chlorate, and its friction sensitivity is far safer than chlorate, it still has a high impact The sensitivity is generally 80-90%, and the environmental pollution is serious, which cannot meet the public's demand for safe and environmentally friendly fireworks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] The preparation method of the above-mentioned sulfur-free and chlorine-free pyrotechnic composition, the specific preparation steps are as follows:

[0056] 1) Grind the above-mentioned oxidant, pass the ground oxidant powder through a 100-120 mesh sieve, then dry it in a drying oven at a temperature of 70-80°C for 1-2 hours, then cool it and put it into a desiccator for later use; the above-mentioned catalyst is passed through Grind and pass through a 100-120 mesh sieve, dry at 40-50°C for 2-3 hours for later use; dry the above-mentioned primer in a drying oven at 50-60°C for 2-3 hours for later use; grind the above-mentioned combustion agent and pass through a 100-120 mesh sieve Dry it in a drying oven at a temperature of 70-80°C for 1-2 hours, and then pack it into a desiccator for later use after cooling down.

[0057] 2) According to the above ratio, the above raw materials are poured into the mortar for grinding in turn, and the grinding time is longer than 30 min...

Embodiment 1

[0066] Preparation of nickel hydrazine nitrate

[0067] Put the hydrazine hydrate aqueous solution with a concentration of 5wt% in a tall beaker, heat it in a constant temperature water bath to about 65°C, start the stirrer at the same time, adjust the voltage to a medium stirring speed, and slowly add 10 wt% by titration Nickel nitrate aqueous solution was stirred at 65°C for 10 minutes at a constant temperature after the addition of the feed, continued to stir and gradually cooled to below 35°C, and the obtained suspension was filtered with a vacuum filter, and the obtained powder sample was washed 3 times with distilled water. The powder sample is placed in a drying dish, placed in a constant temperature drying oven, and dried at 55°C for 6 hours to obtain nickel hydrazine nitrate. Under the above process conditions, the yield of nickel hydrazine nitrate is 96%, the particle size is 8.35 μm, and the fluidity is good. The product It is rose red.

Embodiment 2

[0069] Embodiment 1 Nickel hydrazine nitrate carries out demulsification method coating modification, and the steps are as follows

[0070] (1) Weigh 24g of water-based polyurethane emulsion, add it into a single-necked flask containing 50mL of distilled water at room temperature, and stir at a constant temperature of 60°C to mix the two evenly;

[0071] (2) After a certain period of time, add an appropriate amount of surfactant and continue stirring at constant temperature for 30 minutes;

[0072] (3) Cool down to the demulsification temperature, add 100g of nickel hydrazine nitrate, stir well to mix evenly;

[0073] (4) Weigh 72g of alum solution, drop the alum solution into the flask at a rate of 1 drop / s, and stir at a constant temperature of 40°C for 15 minutes, so that the water-based polyurethane is precipitated from the emulsion and coated on the surface of nickel hydrazine nitrate;

[0074] (5) Cool down, filter with suction, wash with water for 2 to 3 times, and obt...

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Abstract

The invention discloses a sulfur-free and chloride-free pyrotechnic composition, which is prepared from the following ingredients of oxidizing agents, catalysts, initiating explosives and combustion agents, wherein the oxidizing agents are nitrate; the catalysts are metallocene and derivatives thereof; the initiating explosives are high-energy nickel coordination compounds; the combustion agents are charcoal. The sulfur-free and chloride-free pyrotechnic composition has the advantages that the safety is high; the environment-friendly and pollution-free effects are achieved; the storage is easy; the combustion performance is good; the thrust is strong; the excellent performance is realized.

Description

technical field [0001] The invention relates to a pyrotechnic composition, in particular to a sulfur-free and chlorine-free pyrotechnic composition. Background technique [0002] As the main power source of various fireworks and pyrotechnic products, black powder has become the necessary gunpowder for almost all fireworks and firecrackers. Its main components are chlorate, sulfur, and charcoal. However, the sulfur in the existing black powder has a high sensitivity and is not particularly stable. During the preparation and production of fireworks and firecrackers, accidents often occur, causing casualties And the economic loss is immeasurable, leading to serious consequences, and the sulfur dioxide gas released after the sulfur element is burned is extremely pungent and poisonous, and every time the fireworks are released, it causes environmental pollution. Due to the very high sensitivity of potassium chlorate, the state currently prohibits the use of potassium chlorate in...

Claims

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Application Information

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IPC IPC(8): C06B41/00C06B45/36C06B23/00
CPCC06B23/009C06B41/00C06B45/36
Inventor 刘勇章王志远蔡波
Owner DANCING FIREWORKS GROUP CO LTD
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