Desensitizer for pyrotechnic composition and preparation method

Abstract

The invention relates to the technical field of fireworks and firecrackers, in particular to a desensitizer for pyrotechnic composition and preparation method. According to the parts by weight, the desensitizer for pyrotechnic composition comprises 20-30 parts of magnesium oxide, 10-15 parts of zinc oxide, 2-4 parts of calcium stearate, 1-5 parts of antimony trioxide, and 10-15 parts of titanium dioxide, 5-10 parts of polyazide glycidyl ether, 1-3 parts of ammonium dinitramide. The desensitizer for pyrotechnic composition has good diffusion performance, moisture resistance, stability and invariability, which can be stored for a long time without deterioration and can better mix the other components of pyrotechnics.

Description

technical field [0001] The invention relates to the technical field of fireworks and firecrackers, in particular to a pyrotechnic agent insensitive agent and a preparation method thereof. Background technique [0002] Setting off fireworks and firecrackers is a custom during the Spring Festival. Although more and more cities have adopted measures to prohibit them, there are still a large number of fireworks and firecrackers set off during the festival. At present, common components of fireworks such as explosives, propellants, and bright beads include sulfur , alloy, aluminum powder, barium nitrate, etc. Among them, the alloy is easy to ferment and heat up in a humid environment, resulting in spontaneous combustion; It will produce violent explosions. From the perspective of risk, reducing the mechanical sensitivity of pyrotechnic agents can effectively reduce the possibility of accidents. However, there are few studies on the use of insensitivity agents in fireworks. [00...

AI Technical Summary

Problems solved by technology

[0002] Setting off fireworks and firecrackers is a custom during the Spring Festival. Although more and more cities have adopted measures to prohibit them, there are still a large number of fireworks and firecrackers set off during the festival. At present, common components of fireworks such as explosives, propellants, and bright beads include sulfur , alloy, aluminum powder, barium nitrate, etc. Among them, the alloy is easy to ferment and heat up in a humid environment, resulting in spontaneous combustion; It will produce violent explosions. From the perspective of risk, reducing the mechanical sensitivity of pyrotechnic agents can effectively reduce the possibility of accidents. However, there are few studies on the use of insensitivity agents in fireworks and firecrackers.

[0003] Patent No. 201710242202.0 discloses an insensitive composite material for unpacking fireworks and firecrackers. Its components and their weight-to-number ratios are: 57-62 parts of aluminum powder, 8-12 parts of zinc oxide, and 7-11 parts of chlorinated rubber , 3 to 6 parts of graphite, 4 to 7 parts of aluminum-magnesium alloy, 5 to 6 parts of potassium carbonate, and 3 to 5 parts of titanium dioxide. The composite material is used as a breaking agent prepared by a reducing agent, and its safety performance indicators are lower than those of traditional drugs. Low sensitivity and much higher safety factor than traditional medicines

[0004] Due to various safety problems still appearing in the production, transportation and setting off of fireworks and firecrackers, it is not uncommon to cause heavy casualties and property losses. In addition, commonly used desensitizing agents such as: paraffin, asphalt, camphor, stearic acid, mineral oil , silicone oil, polyethylene wax, graphite, boron nitride, molybdenum disulfide, baking soda, strontium carbonate, calcium carbonate or a combination thereof, if used in pyrotechnics, the insensitivity effect is very different, and together with other pyrotechnic materials mixing, poor uniformity

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