Propellant for fireworks and crackers

Abstract

The invention relates to a propellant for fireworks and crackers. The propellant is prepared from the following four raw materials: potassium perchlorate, potassium hydrogen terephthalate, charcoal powder and an adhesive, wherein the adhesive is glutinous rice flour or phenolic resin. The propellant is prepared by the following steps: mixing: by mass percentage, the four raw materials are put into a gunpowder machine and are uniformly mixed to obtain mixed chemical powder; and prilling: the well mixed chemical powder is added into a solvent and is kneaded into powder balls, and the powder balls are made into small spherical particles by a sugarcoating machine or rubbed into small particles by a screen mesh, and then the propellant for the fireworks and crackers is obtained by drying in the sun. A finished product of the propellant for the fireworks and crackers is prepared from the four raw materials and by the two processes of mixing and prilling, the production technology is simple, ball milling, tabletting, crushing and other processes in which exploding is easy to occur can be omitted, and the safety performance of the propellant is greatly improved. The propellant has the advantages of low hygroscopicity, stable performance, long shelf life, small shot noises, high shot height, small lateral force, low production cost and less use amount, and has obvious price advantage.

Description

technical field [0001] The invention relates to a propellant for fireworks and firecrackers, which belongs to the field of fireworks and firecrackers manufacturing. Background technique [0002] Existing fireworks and firecracker propellants all adopt the following raw materials in mass percentages to be formulated: 70% potassium nitrate, 20% charcoal, and 10% sulfur, and are successively weighed, ball milled, granulated, pressed into tablets, crushed, screened, and polished. In the propellant, potassium nitrate is used as the oxidant, which has the advantage of low price, and the disadvantage of strong hygroscopicity and deliquescent propellant. The propellant produced has a short shelf life, large quality differences, and weak launch power. , the lateral force is larger. With the continuous improvement of the industrial level, there is an urgent need for a fireworks propellant with low production and use cost, simple production process, stable performance and long shelf ...

AI Technical Summary

Problems solved by technology

[0002] Existing fireworks and firecracker propellants all adopt the following raw materials in mass percentages to be formulated: 70% potassium nitrate, 20% charcoal, and 10% sulfur, and are successively weighed, ball milled, granulated, pressed into tablets, crushed, screened, and polished. In the propellant, potassium nitrate is used as the oxidant, which has the advantage of low price, and the disadvantage of strong hygroscopicity and deliquescent propellant. The propellant produced has a short shelf life, large quality differences, and weak launch power. , the lateral force is larger