Firework coating gunpowder

Abstract

The invention discloses firework coating gunpowder composed of, by weight, 25 to 42 parts of potassium perchlorate, 20 to 40 parts of strontium nitrate, 8 to 15 parts of mixed charcoal, 5 to 10 partsof shellac, 1 to 5 parts of rice starch, 1 to 3 parts of paraffin, and 1 to 5 parts of potassium hydrogen terephthalate. When the firework is set off, the firework coating gunpowder can form a comet-like effect in a red color and also has a coating and trailing effect, which are flexible. By means of different blend charcoal components, the speed of setting off the firework is controllable, so that the time of setting off the firework can be delayed or shortened; in addition, by adding the potassium hydrogen terephthalate as a whistling agent, the firework can make a pleasant whistling sound,so that the product can satisfy market demands better.

Description

technical field [0001] The invention relates to a firecracker, in particular to a firecracker coating medicine, and belongs to the technical field of firecrackers. Background technique [0002] With the increasing improvement of people's living standards and the continuous development of science and technology, the safety, entertainment and technical requirements for fireworks used in festivals and other occasions are also getting higher and higher; in the prior art, fireworks mainly use potassium chlorate, It is prepared from raw materials such as sulfur and iron slag. Potassium chlorate is the most commonly used oxidant in the production of fireworks and firecrackers. It is a strong oxidant. Its thermal decomposition process is an exothermic reaction. The decomposition temperature is low, flammable and explosive. The chemical characteristics, in addition to the uneasy factors in the process of preparation, processing and storage and transportation, are often caused by the ...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of people's living standards and the continuous development of science and technology, the safety, entertainment and technical requirements of fireworks used in festivals and other occasions are also getting higher and higher; in the prior art, fireworks mainly use potassium chlorate, It is prepared from raw materials such as sulfur and iron slag. Potassium chlorate is the most commonly used oxidant in the production of fireworks and firecrackers. It is a strong oxidant. Its thermal decomposition process is an exothermic reaction with low decomposition temperature. Chemical characteristics, in addition to the uneasy factors in the process of preparation, processing, storage and transportation, the unreasonable proportion of each component often causes the products after combustion to block the holes of the fireworks during discharge, which not only affects the discharge of fireworks, but also easily causes explosions. , causing bodily harm to consumers and the surrounding masses; Chinese patent application number: 201410802049.9 discloses a sulfur-free fireworks, the safe sulfur-free fireworks include the following components by weight: 7~12 parts by weight of oxidizer, 15~22 parts by weight of carbon black Parts, 3~6 parts of sodium particles, 3~6 parts of aluminum powder, 0.1~1 part of filler, 6~12 parts of binder; the components of the oxidant are potassium permanganate and barium nitrate, potassium permanganate The mass ratio of barium nitrate to barium nitrate is 1:1~1:1.5; the formula of the safe sulfur-free fireworks in this technical scheme is simple, convenient to manufacture, low in cost, good in product quality, and the formula does not contain sulfur, has high safety without pollution, and is effective The possibility of accidents has been reduced; but these metal powders in the above-mentioned technical scheme are granular, and under the effect of the blast wave of the gunpowder explosion, its trajectory is relatively straight, or in a simple arc shape, and its overall visual artistic effect is not good; Therefore, in order to solve the above problems, a new type of fireworks with good safety and various postures is designed.