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Preparation method of a composite energetic fragment with an outer metal matrix and an inner polymer matrix

A metal-based and polymer technology, applied in the field of energetic materials and active fragment materials, can solve the problems of low strength, density and activity, and achieve high strength, wide sources and simple process

Active Publication Date: 2020-10-16
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 a composite energetic fragment with an outer metal matrix and an inner polymer matrix
  • Preparation method of a composite energetic fragment with an outer metal matrix and an inner polymer matrix
  • Preparation method of a composite energetic fragment with an outer metal matrix and an inner polymer matrix

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing a composite energetic fragment of an outer metal base and an inner polymer base, the specific steps are as follows:

[0027] (1) First prepare the outer metal-based hollow cylindrical specimen;

[0028] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / zirconium powder=30 / 70, that is, 30g of tungsten powder and 70g of zirconium powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0029] Molding: Put the uniformly mixed tungsten powder / zirconium powder in a hollow cylindrical mold for compression, 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 mold is released after the pressure release. obtain molded parts;

[0030] Sintering: Put the above-mentioned molded parts after demoulding in a sintering furnace for sintering, use an argon atmosphere during the sintering process, the sintering te...

Embodiment 2

[0037] A method for preparing a composite energetic fragment of an outer metal base and an inner polymer base, the specific steps are as follows:

[0038] (1) First prepare the outer metal-based hollow cylindrical specimen;

[0039] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / zirconium powder=50 / 50, that is, 50g of tungsten powder and 50g of zirconium powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0040] Molding: Put the uniformly mixed tungsten powder / zirconium powder in a hollow cylindrical mold for compression, 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 mold is released after the pressure release. obtain molded parts;

[0041] Sintering: Put the above-mentioned molded parts after demoulding in a sintering furnace for sintering, use an argon atmosphere during the sintering process, the sintering te...

Embodiment 3

[0048] A method for preparing a composite energetic fragment of an outer metal base and an inner polymer base, the specific steps are as follows:

[0049](1) First prepare the outer metal-based hollow cylindrical specimen;

[0050] Weighing and powder mixing: the mass ratio of each component is: tungsten powder / zirconium powder=70 / 30, that is, 70g of tungsten powder and 30g of zirconium powder are weighed. Put it in a full-range planetary ball mill and mix for 1h, and mix well;

[0051] Molding: Put the uniformly mixed tungsten powder / zirconium powder in a hollow cylindrical mold for compression, 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 mold is released after the pressure release. obtain molded parts;

[0052] Sintering: Place the above-mentioned molded parts after demoulding in a sintering furnace for sintering. During the sintering process, an argon atmosphere is used. The sinter...

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Abstract

The invention relates to a preparing method of a composite energetic fragment with a metal matrix on an outer layer and a polymer matrix on an inner layer, and belongs to the field of energetic materials and active fragment materials. Tungsten powder / zirconium powder is placed in a comprehensive planetary ball mill to be evenly mixed; uniform powder is placed in a customization mold, and pre-pressing molding and demolding are carried out; sintering is carried out, and a hollow cylindrical product A is obtained; aluminum powder, tungsten powder and polytetrafluoroethylene powder are placed in the comprehensive planetary ball mill to be evenly mixed, the hollow cylindrical product A is filled with uniform powder, and pre-pressing molding is carried out; and sintering is carried out, and a final product is obtained. The material serves as the energetic material and is very insensitive and safe under the static state, has certain toughness and strength and can be directly machined. Under the high-speed impact effect, violent explosion and combustion happen, and high heat high temperature is generated; and the material serves as the fragment material, high kinetic energy and high chemical energy released after impact explosion are used, and comprehensive damage of penetration, inner explosion, fire setting and overpressure of the target can be achieved.

Description

technical field [0001] The invention relates to a preparation method of a composite energetic fragment with a metal base in an outer layer and a polymer base in an inner layer, 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 h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00B22F1/00B22F3/02B22F3/10B22F7/06
CPCB22F1/0003B22F3/02B22F3/10B22F7/06C22C16/00
Inventor 石艳松束庆海吕席卷赵帅陈树森金韶华施瑞李丽洁吴启才王宏佳文萍于春宏吕罡
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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