Composite explosive structure and preparation process

A technology for mixing explosives and explosives, which is applied in the directions of explosives, non-explosives/non-thermal agents, non-explosive fillers/gelling agents/thickeners, etc. The effect of particle sensitivity, strong detonation output capability, and high security

Active Publication Date: 2021-06-11
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a mixed explosive structure and preparation process to solve the technical problem that the mixed explosives in the prior art are difficult to balance power and safety

Method used

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  • Composite explosive structure and preparation process
  • Composite explosive structure and preparation process
  • Composite explosive structure and preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a mixed explosive structure including mixed crystal particles 1, such as figure 1 As shown, the mixed crystal particle 1 is coated with a coating film 2;

[0062] The mixed crystal particles 1 include CL-20 explosive 3 and aluminum powder 4, and the CL-20 explosive 3 and aluminum powder 4 are partially bonded by a binder 5;

[0063] The coating film 2 is composed of paraffin wax, talcum powder and sodium dodecylbenzenesulfonate.

[0064] CL-20 explosives are ε-crystalline spherical particles with a maximum particle size of 800 nanometers.

[0065] The aluminum powder is a spherical particle with a maximum diameter of 600 nanometers.

[0066] The binder is EVA.

[0067] The mixed explosive structure is composed of the following raw materials in parts by weight: 95% of CL-20 explosive and aluminum powder, 1% of binder, 3.8% of paraffin, talcum powder and sodium dodecylbenzenesulfonate 0.2%.

[0068] The weight ratio of CL-20 explosive and alu...

Embodiment 2

[0084] This embodiment provides a mixed explosive structure, which is basically the same as the mixed explosive structure in Example 1, the only difference being that in this embodiment:

[0085] The mixed explosive structure consists of the following raw materials in parts by weight: 95% of CL-20 explosive and aluminum powder, 2% of binder, 2.8% of paraffin, talcum powder and sodium dodecylbenzenesulfonate 0.2%.

[0086] CL-20 explosives are ε-crystalline spherical particles with a maximum particle size of 700 nanometers.

[0087] The aluminum powder is a spherical particle with a maximum diameter of 350 nanometers.

[0088] The binder is EVA.

[0089] The weight ratio of CL-20 explosive and aluminum powder is 85:10.

[0090] The weight ratio of talcum powder and sodium dodecylbenzenesulfonate is 1:1.

[0091] The melting point of paraffin is 58°C.

[0092] The molding process of the mixed explosive structure in this embodiment is the same as that of the mixed explosive ...

Embodiment 3

[0096] This example provides a mixed explosive structure, which is basically the same as the mixed explosive structure in Example 1, the only difference being that in this example: the weight ratio of CL-20 explosive to aluminum powder is 80:15.

[0097] The molding process of the mixed explosive structure in this embodiment is the same as that of the mixed explosive structure in Example 1.

[0098] The characterization results of the mixed explosive structure in this example are basically the same as those in Example 1.

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Abstract

The invention provides a composite explosive structure and a forming process. The composite explosive structure comprises mixed crystal particles, and the mixed crystal particles are coated with a coating film; the mixed crystal particles comprise CL-20 explosives and aluminum powder, and the CL-20 explosives and the aluminum powder are locally bonded through a binder; and the coating film is composed of paraffin, talcum powder and sodium dodecyl benzene sulfonate. The mixed crystal particles are realized through mixed crystal dispersion and mixed crystal kneading processes; and the coating film is realized through solution preparation and paddle-free mixing processes. The composite explosive structure has high detonation output capacity, and compared with conventional mixing of blended explosives in the same proportion, the temperature of an explosion field is increased by 100 DEG C or above; the Gurney coefficient is increased by 5%; and the shock wave overpressure is improved by more than 10%. The composite explosive structure provided by the invention has high safety, and the impact sensitivity and the friction sensitivity are reduced by more than 10% compared with a same-proportion crystal embedding structure and a conventional mixed structure.

Description

technical field [0001] The invention belongs to the technical field of propellants and explosives, and relates to mixed explosives, in particular to a mixed explosive structure and a preparation process. Background technique [0002] CL-20 explosive is a polycyclic cage-like nitramine compound, which is characterized by high energy density. Its energy properties such as detonation velocity, detonation pressure, detonation heat, and density are significantly higher than those of HMX and other monocyclic nitramine explosives. It is the future The material of choice for propellant and high explosive formulations. However, the impact sensitivity, friction sensitivity, and electrostatic sensitivity of CL-20 explosives are also significantly higher than those of HMX, which leads to great safety hazards in CL-20 explosives in industrial processing, composite explosive manufacturing, and weapon application, especially in safe manufacturing. The promotion and application of CL-20 ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B27/00C06B23/00C06B25/34C06B45/36
CPCC06B27/00C06B25/34C06B23/001C06B23/00C06B45/36
Inventor 冯晓军王晓峰冯博封雪松席鹏
Owner XIAN MODERN CHEM RES INST
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