Pyrotechnic composition for liquid carbon dioxide blasting and production method thereof

A technology of liquid carbon dioxide and pyrotechnic powder, which is applied to the production of inorganic oxygen halide salt explosive compositions, explosives, compressed gas, etc., can solve the problem that the pyrotechnic formulation cannot be used, and the composition and loading rate of carbon nanotube ruthenium salts are not recorded or not. Applicable to fireworks and firecrackers production and other problems, to achieve the effect of less solid residue, good active dust reduction effect, and high hydrogen-carbon ratio

Pending Publication Date: 2021-11-02
陈昊彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 3. An antistatic smokeless and sulfur-free propellant for fireworks and its preparation method (201911177953.4) records a pyrotechnic formulation, but highly toxic beryllium is used in the pyrotechnic formulation, and it is often used Walled carbon nanotubes are not catalysts
[0015] 4. A multifunctional smokeless and sulfur-free firecracker propellant and its preparation method (201911177632.4) records a pyrotechnic formulation, but the passivated RDX in this record is a military explosive component, which is not suitable for the production of fireworks and firecrackers , and the multi-walled carbon nanotubes used are not catalysts
[0016] 5. A low-sensitivity smokeless and sulfur-free firecracker nitrate agent and its preparation method (201911255430.7) records a pyrotechnic agent type, but the passivated RDX in this record is a military explosive component, which is not suitable for the production of fireworks and firecrackers, and The multi-walled carbon nanotubes used are not catalysts
[0017] 6. A high-safety and environment-friendly nitrate-based fireworks and its production method (202110236717.6) records a pyrotechnic formulation, but the ammonium nitrate used in the pyrotechnic formulation is the main component of industrial explosives and cannot be used in pyrotechnics Pharmaceutical form, and the composition and loading rate of the ruthenium salt supported by carbon nanotubes used in it are not recorded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Preparation of combustion catalysts.

[0092] (1) Take 1 g of carboxylated multi-walled carbon nanotubes and 5 g of copper oxide and place them in 250 ml of DMF, and disperse them ultrasonically for 20 min to obtain a suspension.

[0093] (2) Centrifuge the above suspension for 10 minutes, pour off the upper layer solution, add 100ml of pure water, centrifuge again for 10 minutes, repeat three times, and dry the solid with an infrared lamp to obtain carboxylated multi-walled carbon nanotubes-copper oxide loaded on the outer wall Composite, copper oxide loading rate 43%.

Embodiment 2

[0095] Preparation of combustion catalysts.

[0096] (1) Dissolve 5g of sodium hydroxide in 50ml of purified water, add 1g of carboxylated multi-walled carbon nanotubes, heat to reflux for 15min, cool, filter with polytetrafluoroethylene membrane, and wash the solid residue with 100ml of purified water three times.

[0097] (2) Take 1 g of the solid residue obtained in the previous step, put 5 g of copper oxide in 50 ml of DMF, and ultrasonically disperse for 20 min to obtain a suspension.

[0098] (3) Filter the above suspension with a polytetrafluoroethylene filter membrane, wash it three times with 100ml of pure water, and dry the solid with an infrared lamp to obtain a multi-walled carbon nanotube-copper oxide composite loaded on the outer wall, and the copper oxide loaded The rate is 42%.

Embodiment 3

[0100] Preparation of combustion catalysts.

[0101] (1) Add 1g of carboxylated multi-walled carbon nanotubes to 50ml of mixed acid (concentrated sulfuric acid:concentrated nitric acid volume ratio 1:1), heat and reflux for 20min, cool, dilute with pure water, filter with polytetrafluoroethylene membrane, and use for solid residue Wash with 100ml pure water three times.

[0102] (2) Dissolve 1g of the solid residue obtained in the previous step, 10.6g of anhydrous copper chloride, and 0.3g of silver nitrate in 50ml of pure water, stir for 10min, add dropwise 200ml of 1mol / L sodium hydroxide solution, stir for 15min, and heat to Reflux for 20 min and cool to obtain a suspension.

[0103] (3) The above suspension is filtered with a polytetrafluoroethylene filter membrane, washed three times with 100ml of pure water, and dried (180~300°C) to obtain multi-walled carbon nanotubes-copper oxide- Silver oxide composite, metal oxide loading rate 37%.

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Abstract

The invention discloses a pyrotechnic composition for liquid carbon dioxide blasting and a production method thereof, the micro pyrotechnic composition comprises the following raw materials by mass: 0.1-10% of a combustion catalyst, 30-60% of an oxidant, 40-60% of a reducing agent, 0.1-5% of an adhesive and 1-10% of a modified additive, and the micro pyrotechnic composition can be applied to liquid carbon dioxide blasting excitation powder. The pyrotechnic composition has the advantages of being small in usage amount, stable in raw material chemical property, easy to completely burn, high in ignition temperature, low in explosion temperature, large in gas yield, small in solid residue and the like, and the combustion efficiency of the pyrotechnic composition can be effectively improved.

Description

[0001] This application is a divisional application [0002] The filing date of the original application is: August 27, 2021 [0003] The application number of the original application is: 202110992406.2 [0004] The title of the invention of the original application is: a carbon nanotube micro-pyrotechnic powder composition and its production method technical field [0005] The invention belongs to the technical fields of fireworks and firecrackers and liquid carbon dioxide explosion, and relates to a composition and a production method thereof, in particular to a carbon nanotube micro-pyrotechnic composition and a production method thereof. Background technique [0006] Fireworks and firecrackers are a characteristic industry in our province and a high-risk industry. Our province has repeatedly caused fire and explosion accidents in fireworks production enterprises due to static electricity, impact and friction, and spontaneous combustion caused by pyrotechnic powder, cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/04C06B29/12C06B31/02C06B31/10C06B33/06C06B33/12C06B33/14C06D5/06
Inventor 陈昊彬赵晓娟程爱宝
Owner 陈昊彬
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