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A metal-accelerated explosive and its preparation method

A metal and explosive technology, applied in the field of metal-accelerated explosives and its preparation, can solve problems such as insufficient metal driving ability, achieve the effects of promoting reaction speed and reaction completeness, improving metal driving ability, and reducing reaction time

Active Publication Date: 2022-03-15
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem of insufficient metal driving ability of the current metal-accelerated explosives, the present invention adopts a solvent-non-solvent recrystallization process to combine 3,4-dinitrofurazanyl oxide furazan explosives with nano-aluminum powder to form composite particles. The crystal hybrid method realizes the close contact between the explosive particles and the nano-aluminum powder, improves the overall speed of the detonation reaction, and realizes the improvement of the metal acceleration capacity of the explosive system

Method used

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  • A metal-accelerated explosive and its preparation method
  • A metal-accelerated explosive and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0017] This embodiment is carried out with reference to the following composition by mass: 3,4-dinitrofurazanylfuroxan (DNTF) 80%, nano-aluminum powder 15%, ethylene-vinyl acetate copolymer 2%, paraffin 3%.

[0018] The preparation method of this example is as follows:

[0019] (1) Preparation of DNTF / nano-aluminum powder composite particles: Weigh 80g of 3,4-dinitrofurazanylfuroxan and add it into 300ml of dimethyl sulfoxide, stir and dissolve to form 3,4-dinitrofurazanylfuroxan Our dimethyl sulfoxide solution, set aside; Weigh 15g of nano-aluminum powder and add it to the above solution, with a mechanical stirring speed of 200-250r / min, and continue to stir to form a nano-aluminum powder in the 3,4-dinitrofurazanyl oxidation Suspension in furazan dimethyl sulfoxide solution; keep the stirring speed, use the dropping funnel to drop absolute ethanol into the 3,4-dinitrate of the above-mentioned nano-aluminum powder at a speed of 5ml / min~8ml / min In the suspension of furazanyl ...

Embodiment 2

[0023] This embodiment is carried out with reference to the following mass percentage composition: 75% of 3,4-dinitrofurazanyl oxide furazan, 20% of nano-aluminum powder, 2% of ethylene-vinyl acetate copolymer, and 3% of paraffin wax. The preparation method refers to Example 1.

Embodiment 3

[0025]This embodiment is carried out with reference to the following mass percentage composition: 83% of 3,4-dinitrofurazanylfuroxan, 15% of nano-aluminum powder, 1% of ethylene-vinyl acetate copolymer, and 1% of paraffin wax. The preparation method refers to Example 1.

[0026] The performance comparison of each formula of table 1

[0027]

[0028]

[0029] It can be seen from the above table that compared with the comparative example, the charge density of the present application is equivalent or improved, the safety performance is good, and the Gurney coefficient representing the metal acceleration ability is significantly improved, and the maximum increase can be 5.13%.

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Abstract

The application discloses a metal-accelerated explosive and a preparation method thereof, in order to solve the problem of low acceleration ability of the existing metal-accelerated explosive. The mass percentage of the present application is composed of: 3,4 dinitrofurazanyl oxide furazan (D 50 30μm ~ 40μm) 75% ~ 83%, nano aluminum powder (D 50 100nm~200nm) 15%~20%, ethylene-vinyl acetate copolymer (EVA, type 28 / 150) 1%~4%, paraffin (68 # ) 1% to 4%. Composite particles of nano-aluminum powder and 3,4-dinitrofurazanylfuroxan (DNTF) are coated and granulated with EVA and paraffin to complete the preparation of metal-accelerated explosive molding powder. The explosive can achieve strong metal driving ability under the premise of ensuring safety. This application is applicable to the charging of armor-piercing warheads and blast-killing warheads.

Description

technical field [0001] The application relates to a metal-accelerated explosive and a preparation method thereof, which is suitable for charging an anti-armor warhead and an anti-explosion warhead, and belongs to a mixed explosive. Background technique [0002] 3,4-Dinitrofurazanyl furazan oxide is a new type of high energy density material, which integrates furazan, furazan oxide and nitrate base, with a density of 1.937g cm -3 , detonation velocity 9250m·s -1 , explosive heat 5798J·g -1 , has the advantages of high density and high energy, and is the only energetic material that can compete with hexanitrohexaazaisopentazane in energy at this stage. [0003] The armor-piercing warheads or fragmentation warheads currently in use in China need to be loaded with explosive charges with strong metal acceleration capabilities. At present, high-explosive-pressure mixed explosives with high content of main explosives are generally used, among which RDX, HMX, etc. are mostly used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B27/00
CPCC06B27/00
Inventor 封雪松潘文席鹏赵娟薛乐星冯博冯晓军
Owner XIAN MODERN CHEM RES INST
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