Oxidizer for firework explosive agent and preparation thereof

Abstract

The invention discloses an oxidizer for firework explosive agent and preparation thereof. The oxidizer consists of the following mass components: 20 to 50 percent of potassium perchlorate, 0 to 30 percent of potassium nitrate, 30 to 50 percent of barium nitrate mixture and 1 to 5 percent of complexing agent, wherein the complexing agent is tartaric acid or potassium sodium tartrate. The fireworks manufactured by using the oxidizer is characterized in that: the burn rate is over 98 percent; the sound level ranges from 100dB to 140dB; the pressure of gas product rises from 0.69MP to 2.07MP within 1.74ms and the pH value of pyrotechnic composition is between 5 and 9; the water content is less than or equal to 1.5 percent; the regain is less than or equal to 2.0 percent; the thermal stability ensures a decomposing phenomenon does not occur at 75+ / -2DEG C within 48 hours; the friction sensitivity is less than or equal to 40 percent; and the sensitivity to impact is less than or equal to 0 percent. The oxidizer meets the requirements of national standards of Firework Safety and Quality. The manufacturing process of the oxidizer is simple, the cost is low and the application prospect is good.

Description

technical field [0001] The invention belongs to the field of fireworks and firecrackers manufacturing, and in particular relates to an oxidizing agent for firecrackers or fireworks and firecrackers and a preparation method thereof. Background technique [0002] Since the implementation of "Fireworks and Firecrackers Safety and Quality" GB10631-2004, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers and crackers is basically potassium perchlorate. However, the production process of potassium perchlorate uses The method of potassium chlorate secondary electrolysis requires more than 8,000 kilowatt-hours of electricity to produce one ton of potassium perchlorate. At the same time, it consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate relatively high, and the price per ton is as high as more than 10,000 yuan. Therefore, it is the focus and direction o...

AI Technical Summary

Problems solved by technology

[0002] Since the implementation of "Fireworks and Firecrackers Safety and Quality" GB10631-2004, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers and crackers is basically potassium perchlorate. However, the production process of potassium perchlorate uses The method of potassium chlorate secondary electrolysis requires more than 8,000 kilowatt-hours of electricity to produce one ton of potassium perchlorate. At the same time, it consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate relatively high, and the price per ton is as high as more than 10,000 yuan. Therefore, it is the focus and direction of current research to find substances that can partially replace potassium perchlorate without affecting functions and reducing costs.

[0003] At present, there are also a few companies that have developed composite oxidizers and lattice combination oxidizers made of potassium perchlorate, potassium nitrate, ammonium nitrate, barium nitrate and other raw materials, but they have certain defects in the discharge effect and storage stability. , it may be due to the large difference in decomposition temperature between potassium perchlorate and nitrates, which affects the rate of oxygen release, which in turn affects the effect of setting off fireworks and firecrackers. Moreover, after a period of storage of the produced products, the explosion loudness is not enough. The fire ability is reduced, the firing rate cannot meet the requirements, etc., which leads to the lack of recognition by the enterprise

Images