Preparation method of chemical igniter for testing dust explosion characteristic of energetic material
A technology for dust explosion and ignition tools, applied in ignition devices, explosives, offensive equipment, etc., can solve problems such as large environmental pollution and dust generation, and achieve the effects of low price, strong ignition ability, and avoiding toxicity problems.
Inactive Publication Date: 2021-08-27
ZHONGBEI UNIV
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Problems solved by technology
This chemical igniter has a fast burning speed and a strong ignition ability, but barium nitrate and barium peroxide are precursors to poisonous drugs, and they are more polluting to the environment
Moreover, the national standard involving dust explosion stipulates that this chemical igniter is only suitable for general industrial dust, not for explosives and other energetic materials or substances with explosive properties.
For energetic materials companies, a large amount of dust will be generated during the production process, and some processes such as drug mixing, crushing, drying and other links will generate dust. Once ignited and detonated, the consequences will be extremely serious
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[0022] Performance comparison with traditional igniters suitable for industrial dust in the national standard: Using piezoelectric sensors, the pressure generated by the self-explosion of chemical igniters made of black powder in 20L explosion test balls was tested. Each group of experiments was repeated 3 times, and the self-explosion pressure and the explosion pressure versus time curves of black powder masses of 0g, 1.0g, 1.2g, 1.5g, 1.8g, 2.0g, 2.2g, and 2.4g were obtained.
[0023] from image 3 It can be seen from the fitting line in the figure that the mass of the black powder igniter is basically in a linear relationship with the self-explosion pressure of the black powder. The greater the mass of the igniter, the greater the pressure generated by its self-explosion. from Figure 4 It can be seen from the figure that the time for black powder igniters of different qualities to reach the maximum pressure is basically about 0.25 s. The maximum explosion pressure and th...
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The invention relates to a manufacturing method of a chemical igniter, in particular to a non-toxic large-energy igniter, in particular to a manufacturing method of a chemical igniter for testing dust explosion characteristics of an energetic material, and the method comprises the following steps that black powder is wrapped in a spherical film; and then the tops of the two wires are connected through an igniter wire, the igniter wire is wrapped with an ignition head, the tops of the two wires are wrapped with black powder, that is, the ignition head is wrapped with the black powder, and the bottoms of the two wires are arranged outside the black powder, so that the chemical igniter is formed. When an explosion test experiment starts, to-be-tested energetic material dust is stored in a powder storage tank connected with the bottom of the explosion test device, the to-be-tested dust is dispersed into the explosion test device through compressed air to form dust cloud, and a chemical igniter wrapped with black powder is used for ignition. The method is simple in manufacturing process, is suitable for testing dust explosion characteristic parameters of the energetic material, and can provide a basis for formulating dust explosion test standards of the energetic material.
Description
technical field [0001] The present invention relates to a manufacturing method of a chemical igniter, more specifically a non-toxic high-energy igniter, especially a non-toxic high-energy chemical igniter suitable for testing the dust explosion parameters of energetic materials. The invention belongs to the field of energetic materials, and specifically relates to a preparation method of a chemical igniter for testing the dust explosion characteristics of energetic materials. Background technique [0002] GB / T 16425-2018 stipulates that the ingredients of chemical igniters for determining the combustion and explosion parameters of combustible dust are composed of 40% zirconium powder, 30% barium nitrate and 30% barium peroxide. This chemical igniter has a fast burning speed and a strong ignition ability, but barium nitrate and barium peroxide belong to precursor drugs and cause great environmental pollution. Moreover, the national standard related to dust explosion stipulat...
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IPC IPC(8): C06C9/00C06B31/04
CPCC06C9/00C06B31/04
Inventor 曹卫国张云谭迎新陈愿
Owner ZHONGBEI UNIV
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