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A kind of explosive and its preparation method and application

A technology of explosives and main body, which is applied in the direction of explosives, non-explosive/non-thermal agent components, non-explosive desensitizers/passivators, etc., which can solve the problem of low explosive mechanical sensitivity, detonation velocity reduction, energy performance and low vulnerability performance. Taking into account other issues, to achieve the effects of large-scale industrial production and application, low detonation velocity, improved stuttering performance and flame retardant performance

Active Publication Date: 2020-10-16
US DIAMOND OIL DRILLING SYST ENG (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN107879867A discloses a high-energy pressure-packed high-polymer bonded explosive, which includes the following components by weight: main explosive: 45%-75%; auxiliary explosive: 5-20%; metal fuel: 15% ~30%; Binder: 1%~5%; Desensitizing agent: 1%~3%; The main explosive is TKX-50; This invention can not balance the energy performance and low vulnerability of the existing press-fit PBX problem, the introduction of a high-energy insensitive explosive system
The invention has very good anti-high overload performance, safety performance and energy performance, low mechanical sensitivity of explosives, can pass the test of 100mm test projectile gun penetration target test, and can meet the main requirements of various temperature and pressure, penetration, and ground-penetrating warheads. Drug demand, but its detonation velocity still needs to be reduced

Method used

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  • A kind of explosive and its preparation method and application
  • A kind of explosive and its preparation method and application
  • A kind of explosive and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment provides a kind of explosive, and described explosive comprises the following components by weight percentage:

[0055]

[0056] Among them, the main explosive is N,N'-bis(fluoro-dinitroethyl)-3,4-dinitrate ammonium furazan; the mesh number of aluminum powder is 500 mesh; the shock agent is stearic acid and polyethylene A combination of waxes, the mass ratio of the two is 3:1; the particle size of the nano-basalt powder is 50nm; the composite glass microspheres include silica and composite fibers coated inside the silica, and the composite fibers include hollow cores Aluminum fiber and the flame retardant inside the hollow aluminum fiber, the flame retardant has the following structure:

[0057]

[0058] This embodiment also provides a preparation method of explosives, the preparation method comprising the steps of:

[0059] (1) Mix the main explosive and the shock agent in ethanol at a temperature of 30°C for 20 minutes to obtain a diluent;

[0...

Embodiment 2

[0063] This embodiment provides a kind of explosive, and described explosive comprises the following components by weight percentage:

[0064]

[0065] Among them, the main explosive is N,N'-bis(fluoro-dinitroethyl)-3,4-dinitrate ammonium furazan; the mesh number of aluminum powder is 100 mesh; the shock agent is stearic acid and polyethylene The combination of waxes, the mass ratio of the two is 1:1; the particle size of nano basalt powder is 100nm; the composite glass microspheres include silica and composite fibers coated inside the silica, and the composite fibers include hollow cores Aluminum fiber and the fire retardant inside the hollow aluminum fiber, the structure of the fire retardant is the same as in Example 1.

[0066] This embodiment also provides a preparation method of explosives, the preparation method comprising the steps of:

[0067] (1) Mix the main explosive and the shock agent in ethanol at a temperature of 10°C for 30 minutes to obtain a diluent;

...

Embodiment 3

[0071] This embodiment provides a kind of explosive, and described explosive comprises the following components by weight percentage:

[0072]

[0073] Among them, the main explosive is N,N'-bis(fluoro-gem-dinitroethyl)-3,4-dinitrate ammonium furazan; the mesh number of aluminum powder is 1000 mesh; the shock agent is stearic acid and polyethylene The combination of waxes, the mass ratio of the two is 5:1; the particle size of nano basalt powder is 10nm; the composite glass microspheres include silica and composite fibers coated inside the silica, and the composite fibers include hollow cores Aluminum fiber and the fire retardant inside the hollow aluminum fiber, the structure of the fire retardant is the same as in Example 1.

[0074] This embodiment also provides a preparation method of explosives, the preparation method comprising the steps of:

[0075] (1) Mix the main explosive and the shock agent in ethanol at a temperature of 40°C for 10 minutes to obtain a diluent;...

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Abstract

The invention discloses an explosive, and a preparation method and an application thereof. The explosive comprises the following components in percentages by weight: 40 to 70% of a main explosive, 10to 30% of aluminum powder, 5 to 15% of a desensitizing agent, 5 to 15% of nanometer basalt powder and 3 to 10% of a composite glass microsphere. According to the invention, through addition of the composite glass microsphere, the explosion rate of the explosive can be reduced through the combined action of silicon dioxide on the surface of the composite glass microsphere and the nanometer basalt powder; meanwhile, under the action of external energy or explosive energy, the silicon dioxide on the surface of the composite microsphere is broken, and a flame retardant located in hollow aluminum fiber can be gradually released; thus, by combination of substances and through combined action, an obtained explosive has low explosion rate and high insensitiveness and flame-retardant performance, can achieve high safety performance and is applicable to the fields of stone mining, etc. The preparation method for the explosive has the advantages of simplicity, easily-available and cheap raw materials, convenient implementation, and applicability to industrial large-scale production application.

Description

technical field [0001] The invention belongs to the technical field of explosives, and in particular relates to an explosive and its preparation method and application, in particular to a low detonation velocity and low detonation energy explosive, its preparation method and application. Background technique [0002] Explosives are substances that can burn violently (that is, explode) in a very short period of time, and are substances that explode by their own energy under the action of a certain amount of external energy. Under normal circumstances, the chemical and physical properties of explosives are stable, but regardless of whether the environment is sealed or not, the amount of charge, or even in the case of zero oxygen supply from the outside world, as long as there is strong energy (provided by the detonator) to stimulate, the explosives will be released to the outside world. Carry out stable detonation type work. When the explosive explodes, it can release a large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00C06B33/10C06D5/06
CPCC06B23/005C06B23/007C06B33/10C06D5/06
Inventor 张福才陈晓俊
Owner US DIAMOND OIL DRILLING SYST ENG (SHANGHAI) CO LTD
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