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Preparation method of energetic fragment of composite charge structure

A technology of fragmentation and charging, applied in transportation, packaging, metal processing equipment, etc., can solve the problems of low strength, density and activity, achieve high strength, low price, and increase power

Active Publication Date: 2019-10-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the metal / fluoropolymer composite energetic materials reported in the past use aluminum and polytetrafluoroethylene (Al / PTFE) as the main components, with low strength, density and activity.

Method used

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  • Preparation method of energetic fragment of composite charge structure
  • Preparation method of energetic fragment of composite charge structure
  • Preparation method of energetic fragment of composite charge structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing a novel energetic fragment with a composite charge structure, the specific steps are as follows:

[0023] (1) first prepare the outer layer hollow cylindrical molded part;

[0024] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / PTFE powder=70 / 30, that is, 70g of tungsten powder and 30g of PTFE powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0025] Molding: put the uniformly mixed powder tungsten powder / PTFE powder in a hollow cylindrical mold and compress, the pressure is 30MPa, the pressurization rate is 30N / s, the pressure holding time is 4min, the pressure release rate is 30N / s, and the pressure is released to obtain a molded part A;

[0026] (2) Preparation of new energetic fragments with composite charge structure.

[0027] Weighing and powder mixing: the mass ratio of each component is: aluminum powder / tungsten / PTFE=10 / 60 / 30, that is, weigh 10g of aluminum po...

Embodiment 2

[0032] A method for preparing a novel energetic fragment with a composite charge structure, the specific steps are as follows:

[0033] (1) First prepare the outer hollow cylindrical specimen;

[0034] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / PTFE powder=80 / 20, that is, 80g of tungsten powder and 20g of PTFE powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0035] Molding: Put the uniformly mixed tungsten powder / PTFE powder in a hollow cylindrical mold and compress it with a pressure of 30MPa, a pressurization rate of 30N / s, a holding time of 4min, and a pressure release rate of 30N / s to obtain a molded part A;

[0036] (2) Preparation of new energetic fragments with composite charge structure.

[0037] Weighing and powder mixing: the mass ratio of each component is: aluminum powder / tungsten / PTFE=20 / 20 / 60, that is, weigh 20g of aluminum powder, 20g of tungsten powder, and 60g of polytetraflu...

Embodiment 3

[0042] A method for preparing a novel energetic fragment with a composite charge structure, the specific steps are as follows:

[0043] (1) First prepare the outer hollow cylindrical specimen;

[0044] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / PTFE powder=90 / 10, that is, 90g of tungsten powder and 10g of PTFE powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0045] Molding: Put the uniformly mixed tungsten powder / PTFE powder in a hollow cylindrical mold and compress it with a pressure of 30MPa, a pressurization rate of 30N / s, a holding time of 4min, and a pressure release rate of 30N / s to obtain a molded part A;

[0046] (2) Preparation of new energetic fragments with composite charge structure.

[0047] Weighing and powder mixing: the mass ratio of each component is: aluminum powder / tungsten / polytetrafluoroethylene = 26 / 10 / 64, that is, weigh 26g of aluminum powder, 10g of tungsten powder, an...

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Abstract

The invention relates to a preparation method of an energetic fragment of a composite charge structure, and belongs to the field of energetic materials and active fragment materials. The preparation method comprises the following steps of uniformly mixing tungsten powder / PTFE powder in an omnidirectional planetary ball mill; putting the uniform powder in a custom mold, and carrying out pre-press molding to obtain a hollow cylindrical pre-pressing piece A; uniformly mixing aluminum powder, the tungsten powder and polytetrafluoroethylene powder in the omnidirectional planetary ball mill, fillingthe hollow cylindrical pre-pressing piece A with the uniform powder, and carrying out pre-press molding; and sintering to obtain a final product. According to the energetic fragment, as an energeticmaterial, and the energetic fragment is very insensitive and safe in static state, and has a certain toughness and strength, so that the energetic fragment can be directly machined; violent explosionand combustion are generated under the high-speed impact action, and high heat and high temperature are generated; and as a fragment material, high-kinetic energy is utilized to impact high chemical energy released after explosion, and combined damage of penetration, implosion, arson and overpressure can be carried out on a target.

Description

technical field [0001] The invention relates to a method for preparing energetic fragments with a composite charge structure, and belongs to the field of energetic materials and active fragment materials. Background technique [0002] With the upgrading of weapons and equipment, a kind of "shock-induced reaction" high-energy insensitive energetic material and active fragment material-metal / fluoropolymer composite energetic material is attracting more and more attention. As an energetic material, it is different from traditional explosives and pyrotechnic agents. It is sintered from two or more non-explosive solids. It is very insensitive and safe under static conditions, and has certain toughness and strength. It can be directly used for mechanical processing, and under the action of high-speed impact, violent explosion and combustion occur, resulting in high heat and high temperature; as an active fragment material, using high kinetic energy and high chemical energy release...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F5/00C22C27/04
CPCB22F5/00C22C27/04B22F1/103B22F1/10
Inventor 石艳松束庆海吕席卷赵帅陈树森金韶华吴启才
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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