Desensitizing agent for reducing mechanical sensitivity of pyrotechnic mixture

Abstract

The invention relates to a desensitizing agent for reducing mechanical sensitivity of a pyrotechnic mixture. The desensitizing agent is prepared by mixing and stirring 92%-98% of dimethicone and 2%-8% of op-10 alkylphenol polyoxyethylene. Containing surface active substances, the desensitizing agent for reducing mechanical sensitivity of a pyrotechnic mixture can penetrate into mixture gaps afterbeing added into a pyrotechnic mixture. The agent not only plays a role in heat absorption and heat insulation, but also has buffering and lubricating effects, and can reduce friction as well as stress concentration phenomena among pyrotechnic mixture crystal grains, thus reducing the probability hot spot generation and effectively preventing mixture hot spot formation and expansion caused by friction. Besides, the desensitizing agent can well mix with other pyrotechnic mixture components uniformly so as to realize the function of reducing the mechanical sensitivity of a pyrotechnic mixture.

Description

technical field [0001] The invention relates to a desensitizing agent for reducing the mechanical sensitivity of pyrotechnic powder. Background technique [0002] Pyrotechnic powder is a solid mixture composed of oxidizing agent and reducing agent, which can produce light, sound, color, smoke, gas and other effects when burning and exploding. Fireworks and firecrackers often encounter friction and impact during production, transportation, and use. Some sensitive pyrotechnic powders may cause combustion, explosion, and safety accidents. Among the fireworks and firecrackers currently circulating in the market, there are quite a few pyrotechnic agents that do not meet the safety performance requirements specified in the national standard "Fireworks and Firecrackers Safety and Quality", and the friction and impact sensitivity are unqualified. If the use of these sensitive drugs is expressly prohibited, the effect of many fireworks will not be achieved. If the existence of the s...

AI Technical Summary

Problems solved by technology

If the use of these sensitive drugs is expressly prohibited, the effect of many fireworks will not be achieved. If the existence of the situation of using sensitive drugs in products by default, it will bring great safety hazards to the production, transportation and discharge process. Therefore, it is urgent Methods to reduce drug sensitivity need to be developed

[0003] Desensitizing agents commonly used in explosives include: 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 it is used in pyrotechnics, the insensitivity effect is very different, and it is mixed with other pyrotechnic materials, and the uniformity is not good.