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Moisture-proof smokeless sulfur-free propellant for fireworks and preparation method thereof

A technology for propellant and fireworks, which is applied in directions such as explosives, can solve problems such as the danger of firecracker propellants, and achieve the effects of being suitable for large-scale production, easy to obtain raw materials and simple preparation process.

Inactive Publication Date: 2020-02-28
江西吉润花炮新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve some dangerous problems existing in the production and storage process of the existing firecracker propellant, improve its moisture absorption performance while ensuring the normal performance of the propellant for fireworks, and provide a moisture-proof smokeless and non-toxic Sulfur propellant and its preparation method

Method used

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  • Moisture-proof smokeless sulfur-free propellant for fireworks and preparation method thereof
  • Moisture-proof smokeless sulfur-free propellant for fireworks and preparation method thereof
  • Moisture-proof smokeless sulfur-free propellant for fireworks and preparation method thereof

Examples

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Embodiment 1

[0034] A moisture-proof smokeless and sulfur-free propellant for fireworks, the formula of which is as follows:

[0035]

[0036] A method for preparing a moisture-proof smokeless and sulfur-free propellant for fireworks, comprising the steps of:

[0037] Step 1, weigh 0.3g shellac and 15g iron powder (350 mesh) by mass ratio 1:50, dissolve shellac in 80mL n-amyl alcohol solvent, obtain the shellac solution that concentration is 0.47%, add iron wherein After ultrasonication for 1 hour at room temperature in an ultrasonic water bath, transfer to an oil bath at 40°C, and after stirring for 3 hours, add 320 mL of precipitant cyclohexane dropwise, complete the dropwise addition in 20 minutes, continue stirring for 40 minutes and then stop , after standing at room temperature, filter, wash the filter residue with cyclohexane for 3 times, transfer to a blast oven and dry at 80°C for 6 hours to obtain modified iron powder;

[0038] Step 2, weigh 8.2g nitrobamboo cellulose, 0.4g G...

Embodiment 2

[0049] A moisture-proof smokeless and sulfur-free propellant for fireworks, the formula of which is as follows:

[0050]

[0051] A method for preparing a moisture-proof smokeless and sulfur-free propellant for fireworks, comprising the steps of:

[0052] Step 1. Weigh 1g shellac and 60g iron powder (350 mesh) according to the mass ratio of 1:60, dissolve shellac in 250mL n-amyl alcohol solvent to obtain a shellac solution with a concentration of 0.50%, and add iron powder thereto After ultrasonication for 1 hour at room temperature in an ultrasonic water bath, transfer to an oil bath at 40°C, and after stirring for 3 hours, add 1L of precipitating agent cyclohexane dropwise, continue stirring for 40 minutes after 25 minutes, and then stop. After standing at room temperature, filter, wash the filter residue with cyclohexane for 3 times, transfer to a blast oven and dry at 80°C for 6 hours to obtain modified iron powder;

[0053] Step 2: Take by weighing 43g nitrobamboo cel...

Embodiment 3

[0064] A moisture-proof smokeless and sulfur-free propellant for fireworks, the formula of which is as follows:

[0065]

[0066] A method for preparing a moisture-proof smokeless and sulfur-free propellant for fireworks, comprising the steps of:

[0067] Step 1, weigh 0.2g shellac and 7.5g iron powder (350 mesh) according to mass ratio 2:75, dissolve shellac in 80mL n-amyl alcohol solvent, obtain the shellac solution that concentration is 0.31%, add wherein For iron powder, after ultrasonication for 1 hour at room temperature in an ultrasonic water bath, transfer it to an oil bath at 40°C, stir for 3 hours, add 350 mL of precipitant cyclohexane dropwise, finish adding dropwise in 20 minutes, continue stirring for 40 minutes Stop, let stand at room temperature and then filter, wash the filter residue 3 times with cyclohexane, transfer to a blast oven and dry at 80°C for 6 hours to obtain modified iron powder;

[0068] Step 2, weigh 17g nitrobamboo cellulose, 0.4g GAP, 0.6g...

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Abstract

The invention relates to a moisture-proof smokeless sulfur-free propellant for fireworks and a preparation method thereof, and belongs to the field of environment-friendly pyrotechnic compositions. The moisture-proof smokeless sulfur-free propellant comprises nitrified bamboo cellulose, glycidyl azide polymer, nitroguanidine, a component A, a component B, a component C, modified iron powder, p-phenylenediamine, bentonite, sodium hexametaphosphate, mesoporous silica and pyriproxyl-D1; the moisture-proof smokeless sulfur-free propellant for fireworks provided by the invention is high in emissionheight, smokeless and residue-free when being set off, and can meet the requirements of an environment-friendly pyrotechnic composition. The moisture-proof smokeless sulfur-free propellant has good moisture resistance, oxidation resistance and corrosion resistance, and can be widely applied to various firework products. And the preparation process is simple, easily available in raw materials andsuitable for large-scale production.

Description

technical field [0001] The invention relates to a moisture-proof smokeless and sulfur-free propellant for fireworks and a preparation method thereof, belonging to the field of environment-friendly pyrotechnics. Background technique [0002] my country has a long history of developing and using fireworks. With the continuous improvement of people's living standards, the demand for fireworks is increasing day by day. Although fireworks are brightly colored and thunderous when they are set off, there are many safety hazards in their preparation and storage. [0003] The propellant currently commonly used in the fireworks industry is mainly made of military nitrate, including potassium nitrate, charcoal, sulfur and metal powder. Its discharge will produce a lot of smoke and metal oxide dust, causing serious environmental pollution and endangering human health; it also seriously affects the lift-off characteristics and discharge effect of fireworks; after discharge, there are st...

Claims

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Application Information

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IPC IPC(8): C06B33/08
CPCC06B33/08
Inventor 刘吉平刘克普吉伟生于保藏李琪军周耀明
Owner 江西吉润花炮新材料科技有限公司
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