A kind of ignition powder and preparation method thereof

A kind of ignition powder and formula technology, applied in the direction of explosives, etc., can solve the problems of unfavorable ignition, high friction sensitivity and mechanical sensitivity, environmental pollution, etc., and achieve the effect of convenient continuous production, high ignition reliability, and simple and easy operation

Active Publication Date: 2017-12-26
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the ignition powder used in the propellant is mainly black powder, which ignites the propellant through hot gas and solid particles, but due to the fast burning speed and the small number of solid particles generated, stable pressure cannot be generated. At the same time, the pressure is too large, which will damage the shell high strength requirements
The igniter composed of charcoal and potassium chlorate has the disadvantages of low burning rate and weak ignition ability; the igniter formed by adding metal oxides to potassium chlorate improves the burning rate and ignition ability, but has the problems of high inductance and poor production safety
Lead-dan-silicon-based ignition powder is a kind of ignition powder with short conduction time, high ignition ability and many solid products, but its friction sensitivity and mechanical sensitivity are high, and there are certain safety hazards
Patent 201010296010.8 uses nickel hydrazine nitrate, lead red-ferrosilicon and binder to form a viscous ignition powder, which reduces the mechanical sensitivity to a certain extent and improves safety. However, when the viscous ignition powder is applied to the ignition head Pores, cracks and other undesirable phenomena are prone to occur, which is not conducive to ignition. At the same time, the ignition powder has certain pollution to the environment.

Method used

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  • A kind of ignition powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An ignition powder and a preparation method thereof, the quality of each component in the formula is: 20g graphene, 47.5g potassium nitrate, 8g calcium peroxide, 22g ammonium persulfate, 2g hydroxyl-terminated butadiene, 0.5g red phosphorus;

[0022] A kind of preparation method of ignition powder, its concrete preparation steps are as follows:

[0023] 1) Weigh 20g graphene, 48g potassium nitrate, 8g calcium peroxide, 22g ammonium persulfate, 0.5g red phosphorus and mix evenly;

[0024] 2) Dissolving 2g of hydroxy-terminated butadiene in anhydrous tetrahydrofuran to form a 2% liquid glue;

[0025] 3) Add the mixture in 1) to 400ml of anhydrous tetrahydrofuran, then add liquid glue under stirring conditions, and stir for 50 minutes after the addition is completed to form a mixed solution, wherein the dropping speed is 50 drops per minute, and the stirring speed is uniform 400r / min;

[0026] 4) Filter the mixed solution, dry it under natural conditions for 2 hours, the...

Embodiment 2

[0028] An ignition powder and a preparation method thereof, the quality of each component in the formula is: 37g graphene, 36g potassium nitrate, 10g calcium peroxide, 15g ammonium persulfate, 2g red phosphorus and 4g nitrocellulose.

[0029] A kind of preparation method of ignition powder, its concrete preparation steps are as follows:

[0030] 1) Weigh 39g graphene, 36g potassium nitrate, 10g calcium peroxide, 15g ammonium persulfate and mix uniformly;

[0031] 2) Dissolving 4g of nitrocellulose in anhydrous ethyl acetate to form a 1% liquid glue;

[0032] 3) Add the mixture in 1) to 400ml of anhydrous tetrahydrofuran, then add liquid glue under stirring conditions, and stir for 60 minutes after the addition is completed to form a mixed solution, wherein the dropping speed is 60 drops per minute, and the stirring speed is uniform 500r / min;

[0033] 4) Filter the mixed solution, dry it under natural conditions for 2 hours, then dry it for 5 hours at a temperature of 40°C an...

Embodiment 3

[0035] An ignition powder and a preparation method thereof, the quality of each component in the formula is: 37g graphene, 35g potassium nitrate, 7g calcium peroxide, 17g ammonium persulfate, 1g red phosphorus and 3g fluorine rubber.

[0036] A kind of preparation method of ignition powder, its concrete preparation steps are as follows:

[0037] 1) Weigh 37g graphene, 35g potassium nitrate, 8g calcium peroxide, 17g ammonium persulfate and mix uniformly;

[0038] 2) Dissolving 3g of fluororubber in anhydrous methyl acetate to form 6% liquid glue;

[0039] 3) Add the mixture in 1) to 350ml of anhydrous tetrahydrofuran, then add the liquid glue under stirring conditions, and stir for 80 minutes after the addition is completed to form a mixed solution, wherein the dropping speed is 50 drops per minute, and the stirring speed is uniform 800r / min;

[0040] 4) Filter the mixed solution, dry it under natural conditions for 3 hours, then dry it at a temperature of 40°C and a vacuum o...

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PUM

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Abstract

The invention relates to an ignition powder and a preparation method, belonging to the field of energetic materials. The composition is as follows: 20-40% of graphene; 40-60% of potassium nitrate; 5-10% of calcium peroxide; 12-30% of ammonium persulfate; 1-8% of binder; The preparation process of the ignition powder is as follows: take graphene, potassium nitrate, calcium peroxide, ammonium persulfate and red phosphorus according to the above ratio and mix evenly; On the mixture, stir evenly, filter, dry, and sieve again to obtain the ignition powder. The ignition powder and its preparation method of the present invention have strong ignition ability, high ignition reliability and low sensitivity, ensuring the safety of transportation and use. The preparation method does not need to use complex equipment, the process is simple, and it is convenient for continuous production. .

Description

technical field [0001] The invention relates to an ignition powder and a preparation method, belonging to the field of energetic materials. Background technique [0002] Ignition powder refers to pyrotechnic powder that can undergo a rapid combustion reaction under the action of external energy and release a large amount of heat, gas and high-temperature residue. It has the characteristics of high thermal sensitivity and strong ignition ability. It is mainly used to ignite various Gunpowder, pyrotechnics and pyrotechnics. [0003] At present, the ignition powder used in the propellant is mainly black powder, which ignites the propellant through hot gas and solid particles, but due to the fast burning speed and the small number of solid particles generated, stable pressure cannot be generated. At the same time, the pressure is too large, which will damage the shell The strength requirements are high. The igniter composed of charcoal and potassium chlorate has the disadvanta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/06
Inventor 刘吉平韩钊武毕晓露刘晓波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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