Fireworks detonating agent without chlorate and perchlorate

Abstract

The firework exploding and sounding agent without chlorate and perchlorate comprises composite oxidant, inflammable sulfur, easy-to-burn aluminum powder and density regulating agent, and features the composite oxidant comprising potassium nitrate 10-50 wt%, barium nitrate 50-90 wt% and potassium permanganate 0-25 wt%. The firework exploding and sounding agent has also added pH regulating agent boric acid and deactivating agent magnesia or stearic acid. The firework exploding and sounding agent has high heat stability, no decomposition under 75 deg.c and minus 25-35 deg.c for 48 hr, friction sensitivity lower than 60 %, knocking sensitivity lower than 50 %, no burning and explosion in falling test and sympathetic detonation test, high fire approaching performance and no special requirement in firing line, and may be used in type B and type C firework products.

Description

technical field [0001] The invention relates to a pyrotechnic explosive used in fireworks and firecrackers. Background technique [0002] Pyrotechnic popping agents are generally compounded by oxidizing agents, combustible agents, density modifiers, etc. The oxidizing agents of existing pyrotechnic popping agents are usually potassium chlorate or potassium perchlorate or potassium perchlorate mixed with barium nitrate, and then compounded with combustible agents such as sulfur, Combustible aluminum powder, density regulator expanded perlite powder, this formula has great potential safety hazards, the melting point of potassium chlorate is low, only 356°C, and it can explode under strong impact. It has impact sensitivity and is sensitive to friction. After sulfur and antimony sulfide are mixed, the sensitivity increases, which is very dangerous. It is easily decomposed by sunlight, and produces extremely unstable potassium chlorite and potassium ch...

AI Technical Summary

Problems solved by technology

[0002] Pyrotechnic popping agents are generally compounded by oxidizing agents, combustible agents, density modifiers, etc. The oxidizing agents of existing pyrotechnic popping agents are usually potassium chlorate or potassium perchlorate or potassium perchlorate mixed with barium nitrate, and then compounded with combustible agents such as sulfur, Combustible aluminum powder, density regulator expanded perlite powder, this formula has great potential safety hazards, the melting point of potassium chlorate is low, only 356°C, and it can explode under strong impact. It has impact sensitivity and is sensitive to friction. After sulfur and antimony sulfide are mixed, the sensitivity increases, which is very dangerous. It is easily decomposed by sunlight, and produces extremely unstable potassium chlorite and potassium chloride with strong hygroscopicity; potassium chlorite is mixed with acids, sulfides and organics, almost Immediate self-ignition or self-explosion

Therefore, combustion or explosion often occurs in the process of production, storage and transportation, which can easily lead to safety accidents; potassium perchlorate is also the source of safety accidents due to its sensitivity.