Smokeless firework propellant

Abstract

The invention discloses a smokeless firework propellant. The composition comprises the following ingredients in parts by weight: 30-50 parts of one of guanidine nitrate or nitroguanidine, 20-40 parts of diethylene glycol dinitrate, and 20-40 parts of cellulose nitrate. The smokeless firework propellant has the beneficial effects that smoke occurrence quantity and air residue are small in burning,no smoke is generated through visual inspection; the safety performance meets the national standard requirement; the moisture resistance is good, the medicine is stable, the storage performance has no abnormality for a long time (within five years); the economy is good, and the popularization and application are easy: the production cost is low and slightly higher than the military nitrate, and the increase rate can not exceed 10%; and under same conditions, the using amount accounts for 45-55% of military nitrate.

Description

technical field [0001] The invention relates to a pyrotechnic powder, in particular to a smokeless fireworks propellant. Background technique [0002] In the current actual production, the firework propellant has been using black powder (military nitrate) composed of potassium nitrate, charcoal and sulfur, which will produce a large amount of black smoke when burning, which will affect the effect of fireworks. A large amount of oxides and residues of carbon, sulfur, and potassium remain, which seriously pollute the environment. [0003] In the prior art, in order to reduce smog, one development direction is to improve black powder, such as the Chinese invention patent "Sulphur-free rocket propellant", the authorized announcement number is CN 1228282C, which removes the sulfur component in the original compatibility of black powder to make it smoke less , but it is only suitable for rocket fireworks, using charcoal and potassium nitrate as combustible and oxidizing agents, t...

AI Technical Summary

Problems solved by technology

[0004] Another direction of improvement is to use nitrocellulose (nitrocellulose, single-base drug). For example, a Chinese utility model patent discloses a smokeless firework, its publication number is CN2102493U, and its propellant is a single nitrocellulose or nitrocellulose All kinds of effect medicines based on element, although the smoke is less than that of black powder, but the firing power is not ideal.

There are also those that mainly add ammonium dichromate or perchloric acid based on nitrocellulose, such as the "smokeless propellant for fireworks" disclosed in the Chinese invention patent application with the publication number CN 1431181A, which uses single-base medicine as the main raw material to add Ammonium dichromate and charcoal form a mixture, but its explosive force is too large, and it is easy to cause a drum, and the cost is high

Or adopt ammonium perchlorate or similar as a kind of oxidizing agent or oxidizing agent, but its moisture absorption rate is higher, and ammonium perchlorate has deliquescence, has limited the application promotion of this type of product

[0005] The Chinese invention patent with the publication number CN 101215211A discloses a "smokeless fireworks agent", which is composed of nickel hydrazine nitrate and perlite powder and other auxiliary materials, but nickel hydrazine nitrate is a complex primer, and improper use may cause safety hazards. Accidents, safety performance is not guaranteed, and the production cost is high (about 50,000 yuan per ton), it is difficult to apply

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