Insensitive primary explosive prepared by using electrostatic spraying process and preparation method thereof

Abstract

The invention discloses an insensitive primary explosive prepared by using an electrostatic spraying process and a preparation method thereof. The insensitive primary explosive is composed of 100 parts by weight of a nanometer thermite and 0.5 part by weight of nitrocellulose, wherein the nanometer thermite is composed of 54 to 57% by weight of copper sulfate pentahydrate and 43 to 46% by weight of nanometer aluminum powder. The preparation method comprises a step of, with copper sulphate pentahydrate as an oxidizing agent and nanometer aluminum powder as a reducing agent, preparing a coatingstructure at a microstructure level by using the electrostatic spraying process, wherein the coating structure uses sulfate as a core and the nanometer aluminum powder as a shell, and the unique microstructure enables the insensitive primary explosive to have higher heat release and higher peak pressure. The insensitive primary explosive of the invention has the advantages of high safety, no heavymetal ions and the like compared with traditional primary explosives, and overcomes safety problems in conventional primary explosives for detonators; and the electrostatic-spraying preparation method is simple in process and does not produce wastewater during production.

Description

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AI Technical Summary

Benefits of technology

This new type of explosive device uses less sensitive materials than previous ones but it's also lighter weight and easier for users to handle because they don’t have any harmful metals or other substances inside them that could be dangerous if used improperly. It can produce consistency from fine powders even at very small sizes without adding too much material into their structure.

Problems solved by technology

This patents discusses different ways to make certain chemical compounds called “nano” thermal agents safer and less expensive compared to existing ones like nitroglycerine and pentaerythritosanilane. However, there have been concerns about their potential health hazards due to residual amounts of metals contained within them. Therefore, some companies now focus on developing new sources of secondary explosives without relying heavily upon traditional raw ingredients.

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