Micro-smoke colorful bright bead for firework

Abstract

The invention discloses a colorful trace fume star used in fireworks. The star consists of an effect agent core, an intermediate agent isolation layer and an ignition agent layer. A layer of intermediate agent is stuck on the effect agent core granules as the intermediate agent isolation layer; and a layer of black powder is stuck on the intermediate agent isolation layer as the ignition agent layer. The effect agent core comprises the following ingredients by weight: 15-30 parts of ammonium perchlorate, 5-15 parts of a colorant, 50-75 parts of single-base and double-base agent and 0-5 parts of magnalium. The intermediate agent comprises the following ingredients by weight: 20-35 parts of potassium perchlorate, 5-15 parts of the colorant, 50-75 parts of the single-base and double-base agent and 0-5 parts of the magnalium. The colorful trace fume star used in fireworks generates fume which is less than 30% of that of the existing agent after burning, and has good moisture resistant performance and long shelf life; and visual observation at the burning field proves that burning rate, lightness and color saturation of the star achieve or exceed the effects of the existing products.

Description

technical field [0001] The invention relates to a fireworks pyrotechnic agent composition, in particular to a kind of smoky colored bright beads for fireworks. Background technique [0002] In the prior art, the colored bright beads for fireworks all use potassium perchlorate, barium nitrate, etc. made in oxygen equilibrium. For example: the composition and weight / number ratio of the red bright pearl are: 47 parts of potassium perchlorate, 20 parts of strontium carbonate, 20 parts of magnesium aluminum alloy, 8 parts of PVC, 8 parts of resin, and 7 parts of shellac. Therefore, there is K in the product 2 O, BaO, Al 2 o 3 , MgO and a large amount of particulate smoke generated by insufficient combustion of binders such as C. These smog not only seriously affect the discharge effect of the large-scale fireworks show that are set off intensively, but also cause great pollution to the urban air near the discharge site. And in the development of smokeless fireworks, althoug...

AI Technical Summary

Problems solved by technology

These smokes not only seriously affect the effect of the large-scale fireworks show that are set off in a centralized manner, but also cause great pollution to the air in cities near the discharge site.

In the development of smokeless fireworks, although someone replaces potassium perchlorate with ammonium perchlorate as an oxidant to try to solve the problem of heavy smoke, they all encounter two problems: one is that ammonium perchlorate cannot coexist with potassium nitrate

Ammonium nitrate will seriously absorb water and make the drug invalid quickly; the second is that the main smokeless combustible single- and double-base powders have low combustion temperature, so that the brightness of the bright beads in the air is too small, and the discharge effect is not good.