Smokeless sulfur-free firework flute agent and preparation method thereof

A flute agent, sulfur fireworks technology, applied in offensive equipment, non-explosive/non-thermal agent components, explosives, etc., to achieve the effect of simple process, no three waste emissions, and few steps

Active Publication Date: 2020-04-10
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The smokeless and sulfur-free fireworks whistle agent not only retains the effect of the existing fireworks whistle agent, but also produces no irritating gas during use, which meets the market demand

Method used

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  • Smokeless sulfur-free firework flute agent and preparation method thereof
  • Smokeless sulfur-free firework flute agent and preparation method thereof
  • Smokeless sulfur-free firework flute agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A smokeless and sulfur-free fireworks whistle agent, the mass percentages of its components are as follows:

[0026]

[0027] 30g of melamine is added to 100g of methanol (30%) / water mixed solvent, after being warmed up to 55°C, stir continuously until the melamine dissolves to obtain solution A; under stirring, mix 35g of sodium hydrogen isophthalate, 15g of perchloric acid Sodium and 15g of disodium phthalate were added to 190g of deionized water in turn, and after heating up to 30°C, stirred at 600rpm for 30 minutes to obtain mixed turbid solution B; while stirring, add solution A to turbid solution B , after heating up to 75°C, after adding 5g of methyl cellulose to it, continue stirring at a rate of 200rpm until the material becomes a uniform mud mass; use a twin-screw granulator to make the obtained uniform mud mass with moderate hardness. After vacuum drying at 60°C for 12 hours, the crude product of the smokeless and sulfur-free fireworks flute agent was obta...

Embodiment 2

[0029] A smokeless and sulfur-free fireworks whistle agent, the mass percentages of its components are as follows:

[0030]

[0031] 300g of melamine is added to 1200g of methanol (40%) / water mixed solvent, after being warmed up to 65°C, stirring continuously until the melamine is dissolved to obtain solution A; under stirring, 370g of sodium hydrogen isophthalate, 120g of perchloric acid Sodium and 130g of disodium phthalate were added to 2450g of deionized water in turn, and after heating up to 35°C, stirred at 500rpm for 40 minutes to obtain mixed turbid solution B; while stirring, solution A was added to turbid solution B , after heating up to 80°C, add 80g of methyl cellulose, and continue to stir at a rate of 250rpm until the material becomes a uniform muddy mass; use a twin-screw granulator to make the obtained uniform muddy mass with moderate hardness. After vacuum drying at 60°C for 12 hours, the crude product of the smokeless and sulfur-free fireworks flute agent ...

Embodiment 3

[0033] A smokeless and sulfur-free fireworks whistle agent, the mass percentages of its components are as follows:

[0034]

[0035] 3.5kg of melamine is added to 15kg of methanol (50%) / water mixed solvent, and after being heated to 75°C, stir continuously until the melamine dissolves to obtain solution A; under stirring, mix 4kg of sodium hydrogen isophthalate, 1kg of Sodium phthalate and 1kg disodium phthalate were added to 25kg deionized water in turn, and after heating up to 45°C, stirred at 400rpm for 60 minutes to obtain mixed turbid solution B; under stirring, solution A was added to turbid solution B After heating up to 90°C, add 0.5kg of methyl cellulose, and continue to stir at a rate of 300rpm until the material becomes a uniform muddy mass; use a twin-screw granulator to obtain a uniform muddy mass with moderate hardness. Carry out granulation, and obtain the crude product of smokeless and sulfur-free fireworks whistle agent after vacuum drying at 60° C. for 12 ...

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Abstract

The invention relates to a smokeless sulfur-free firework flute agent and a preparation method thereof, and belongs to the field of environment-friendly pyrotechnic compositions. The preparation method comprises the steps: weighing sodium perchlorate, sodium hydrogen isophthalate, disodium phthalate, methylcellulose and melamine; adding the weighed melamine into a methanol / water mixed solvent to obtain a solution A; sequentially adding sodium hydrogen isophthalate, sodium perchlorate and disodium phthalate into deionized water in the stirring state and heating and stirring to obtain a mixed solution B; adding the solution A into the solution B in the stirring state, heating, adding methyl cellulose, stirring until the materials form uniform mud pies, granulating, drying to obtain a smokeless sulfur-free firework flute agent crude product, crushing, and sieving to obtain the smokeless sulfur-free firework flute agent. According to the method, potassium hydrogen phthalate and melamine are used as main components, and the decomposition product is gas and does not contain a sulfur element; and the preparation process is simple, steps are few and no three wastes are discharged in the production process.

Description

technical field [0001] The invention relates to a smokeless and sulfur-free fireworks flute sound agent and a preparation method thereof, belonging to the field of environment-friendly pyrotechnics. Background technique [0002] Since ancient times, China has had the tradition of setting off fireworks on festivals. The display of fireworks adds a festive atmosphere to the festival. However, in recent years, due to the continuous growth of consumption, the lack of environmental protection awareness and the impact of the surge of manufacturers, a large number of fireworks have been set off, which has caused a lot of pollution to the environment and brought great harm to human health. [0003] As we all know, the main ingredients of today's fireworks are potassium nitrate, sulfur and charcoal, some also contain potassium chlorate, and even metal powder is added. The toxic and harmful gases and dust particles produced by the combustion of these substances have a very serious im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00
CPCC06B23/009
Inventor 刘吉平方祝青刘克普吉伟生于保藏李琪军周天驰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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