Sulfur-free shoot charge for fireworks and preparation method thereof

Abstract

The invention provides a sulfur-free shoot charge for fireworks and a preparation method thereof. The sulfur-free shoot charge for fireworks comprises potassium perchlorate, potassium hydrogen terephthalate, potassium nitrate, charcoal and phenolic resin in a mass ratio of (50-70) to (20-40) to (4-6) to (3-5) to (0.5-1.5), wherein the grain sizes of the raw materials are 200-300 mesh. The invention also provides the preparation method of the sulfur-free shoot charge for fireworks. Experiments prove that through determination under certain conditions, the product of the sulfur-free shoot charge for fireworks has friction sensitivity of 0-18%, impact sensitivity of 0, ignition temperature of 423 DEG C, moisture absorption ratio of 0.87% and good 48-hour thermal stability at 75 DEG C.

Description

technical field [0001] The invention relates to a pyrotechnic powder and a preparation method thereof, in particular to a sulfur-free fireworks propellant and a preparation method thereof. Background technique [0002] Military nitrate, commonly known as black gunpowder, is a pyrotechnic powder made of potassium nitrate as an oxidant, charcoal as a combustible, and sulfur as a reducing agent. Since the oxidant used is potassium nitrate, it is easy to absorb moisture; Sulfur dioxide is easy to pollute the air; at the same time, adding a large amount of charcoal ash will produce a large amount of smoke and dust after burning, and it is also easy to pollute the air; especially black powder is relatively high in sensitivity, and it is easy to catch fire during the production process. explosion occurs. Therefore, the production of black powder is quite dangerous, and major safety accidents have taken place both at home and abroad. It is urgent to develop a new type of fireworks ...

AI Technical Summary

Problems solved by technology

However, this invention has not been substantially used in production, mainly because according to the disclosed technology, the performance of the finally prepared sulfur-free fireworks propellant is extremely unstable, has moisture return, high impact ignition rate, and low ignition temperature

For example, its impact sensitivity is about 20% higher than that of military nitrates. It is precisely because of this that this invention has not been able to be industrialized in the industry, and even safety accidents have occurred.