Environment-friendly type safety fireworks firecracker gun powder oxidant

Abstract

The invention discloses an environment-friendly safe gunpowder oxidizer of fireworks and firecrackers, and belongs to the chemical field. The environment-friendly safe gunpowder oxidizer is mixed and made by potassium hyperchlorate, strontium nitrate, barium nitrate and flame retardant material. The gunpowder oxidizer is characterized in simple prescription, good safety, no potassium chlorate, no sulfur, etc., and is widely used in the industries such as firecrackers, fireworks, etc., and is an ideal safe gunpowder oxidizer.

Description

Technical field [0001] The invention relates to the field of chemical engineering, in particular to an environment-friendly and safe fireworks and firecracker gunpowder oxidizer used in the fireworks and firecrackers industry. Background technique [0002] Fireworks and firecrackers originated in China, and the gunpowder used is black powder, one of the four great inventions in ancient China. Because black powder contains potassium nitrate and sulfur, its stability is poor, and it is easy to cause safety accidents. limited use. Modern gunpowder uses potassium chlorate as an oxidizing agent, and the firecrackers made of this kind of gunpowder react quickly and make loud noises. However, since potassium chlorate is a strong oxidizing agent, it has a low melting point and poor thermal stability. Its Taman temperature is 42°C and its decomposition temperature is 360°C. ℃, potassium chlorate is mixed with flammable materials such as sulfur, phosphorus, carbon, etc., and it is ea...

AI Technical Summary

Problems solved by technology

[0002] Fireworks and firecrackers originated in China, and the gunpowder used is black powder, one of the four great inventions in ancient China. Because black powder contains potassium nitrate and sulfur, its stability is poor, and it is easy to cause safety accidents. limited use

Modern gunpowder uses potassium chlorate as an oxidizing agent, and the firecrackers made of this kind of gunpowder react quickly and make loud noises. However, since potassium chlorate is a strong oxidizing agent, it has a low melting point and poor thermal stability. Its Taman temperature is 42°C and its decomposition temperature is 360°C. ℃, potassium chlorate is mixed with flammable materials such as sulfur, phosphorus, carbon, etc., and it is easy to ignite and explode when it is hit or rubbed; and potassium chlorate-type gunpowder uses a large amount of sulfur, and sulfur itself is a very active combustible substance that can invade potassium chlorate. The stability of potassium chlorate is destroyed in the crystal lattice. According to the test, the friction sensitivity and impact sensitivity of potassium chlorate-type gunpowder are both 100%. Therefore, in 2002, Document No. 52 of the General Office of the State Council stipulated that the use of potassium chlorate is strictly prohibited in the production of fireworks and firecrackers.

There have been some gunpowders that do not use potassium chlorate recently, such as the Chinese patent "a safety firecracker drug containing perchlorate" (application number is 200310110406.7), its components are made of perchlorate, aluminum powder, sulfur and perlite Combination of four components of powder, the drug has a simple formula, less ingredients, good chemical stability and safety, does not contain potassium chlorate, solves the problems of existing firecracker drugs such as high impact sensitivity, high friction sensitivity and high risk, and has mechanical sensitivity. It has the advantages of low cost, high safety, excellent detonation rate and sound level, but it contains sulfur, which will produce sulfide gas after discharge, which has a certain impact on the environment.