Smokeless sulfur-free firework stabilizing agent and preparation method thereof

A technology of stabilizer and sulfur fireworks, used in non-explosive stabilizers, offensive equipment, non-explosive/non-thermal components, etc., can solve problems such as pollution of the environment, and achieve the effects of no three-waste discharge, simple process, 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

[0004] Firework stabilizer is an important part of pyrotechnics, which guarantees the storage and transportation safety of fireworks. The commonly used firework stabilizer is diphenylamine (CN109232141A, CN102924193A). Diphenylamine will generate smoke when it is not fully burned, polluting the environment

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A smokeless and sulfur-free fireworks stabilizer, the mass percentages of its components are as follows:

[0025]

[0026] Add 25g of magnesium stearate and 17g of dimethyldiphenylurea into 80g of ethanol respectively under stirring, after heating to 60°C, stir continuously until the solute is completely dissolved to obtain solution A; under stirring, add 12g of ferrocene Add it into 25g of dichloromethane (20%) / petroleum ether mixed solvent, and stir continuously until the ferrocene is completely dissolved to obtain solution B; under stirring, add solution A to solution B, heat up to 75°C, and Add 10g of montmorillonite and 36g of ethyl cellulose in sequence under stirring, and continue to stir at a rate of 70rpm until the material becomes a uniform micelle; After vacuum drying at 60°C for 12 hours, the crude smokeless and sulfur-free fireworks stabilizer was obtained; the crude smokeless and sulfur-free fireworks stabilizer was lightly crushed, passed through a 300...

Embodiment 2

[0028] A smokeless and sulfur-free fireworks stabilizer, the mass percentages of its components are as follows:

[0029]

[0030] Add 300g of magnesium stearate and 200g of dimethyldiphenylurea into 1200g of ethanol respectively under stirring, after heating to 65°C, stir continuously until the solute is completely dissolved to obtain solution A; under stirring, add 100g of ferrocene Add it to 300g of dichloromethane (30%) / petroleum ether mixed solvent, and continue to stir until the ferrocene is completely dissolved to obtain solution B; while stirring, add solution A to solution B, and heat up to 83°C. Add 50g of montmorillonite and 350g of ethyl cellulose sequentially under stirring, and continue to stir at a rate of 80rpm until the material becomes a uniform micelle; Granulate and vacuum dry at 60°C for 12 hours to obtain the crude smokeless and sulfur-free fireworks stabilizer; lightly crush the obtained smokeless and sulfur-free fireworks stabilizer, pass through a 30...

Embodiment 3

[0032] A smokeless and sulfur-free fireworks stabilizer, the mass percentages of its components are as follows:

[0033]

[0034] Add 3.5kg of magnesium stearate and 2.2kg of dimethyl diphenyl urea into 15kg of ethanol respectively under stirring, after heating to 70°C, stir continuously until the solute is completely dissolved to obtain solution A; Add ferrocene to 3.5kg of dichloromethane (40%) / petroleum ether mixed solvent, and stir continuously until the ferrocene is completely dissolved to obtain solution B; while stirring, add solution A to solution B, and heat up to 90°C Finally, add 0.5kg montmorillonite and 2.8kg ethyl cellulose successively under stirring state, continue to stir with 100rpm speed until the material becomes uniform micelles; Granulate with a granulator, vacuum dry at 60°C for 12 hours to obtain the crude smokeless and sulfur-free fireworks stabilizer; lightly crush the crude smokeless and sulfur-free fireworks stabilizer, and pass through a 300-mes...

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Abstract

The invention relates to a smokeless sulfur-free firework stabilizing agent and a preparation method thereof, and belongs to the field of environment-friendly pyrotechnic compositions. The preparationmethod comprises the following steps: weighing magnesium stearate, dimethyl diphenyl urea, ferrocene, montmorillonite and ethyl cellulose; respectively adding magnesium stearate and dimethyl diphenylurea into ethanol in a stirring state to obtain a solution A; adding ferrocene into a dichloromethane/petroleum ether mixed solvent and continuously stirring until ferrocene is dissolved to obtain asolution B; adding the solution A into the solution B in a stirring state, sequentially adding montmorillonite and ethyl cellulose in a heating and stirring state, continuously stirring until the materials form uniform micelles, granulating and drying to obtain a smokeless and sulfur-free firework stabilizing agent crude product; and crushing and sieving the smokeless and sulfur-free firework stabilizing agent crude product to obtain the smokeless and sulfur-free firework stabilizing agent. According to the method, magnesium stearate and ethyl cellulose are used as main components and the decomposition product is gas and does not contain a sulfur element; and the preparation method is simple and no three wastes are discharged in the production process.

Description

technical field [0001] The invention relates to a smokeless and sulfur-free fireworks stabilizer 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 and a large amount of toxic and harmful gases are produced. These toxic and harmful gases will bring adverse effects to the living environment of residents. Some people may even suffer from respiratory diseases. [0003] Under the premise of ensuring that fireworks are normally used by people and that the effect of fireworks is not reduced or even better, reducing the environmental pollution and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00
CPCC06B23/006
Inventor 刘吉平李年华于保藏李琪军刘克普吉伟生周耀明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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