A kind of ignition powder and preparation method thereof

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...

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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.

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