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A simple sandwich type composite structure energy storage fragment and its preparation method

A composite structure and interlayer technology, applied in the field of energetic materials and active fragment materials, can solve the problems of enhancing the damage effect, increasing the contact area of ​​a single fragment, and not taking into account, so as to achieve enhanced damage effect, low cost and high power Effect

Active Publication Date: 2022-01-25
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the strength, density and reactivity of existing fluoropolymer-based reactive materials, and further increase the power of penetration and explosion, our team previously provided a method for preparing energetic fragments with a composite charge structure (CN110340349A), a A method for preparing composite energetic fragments with a metal-based outer layer and a polymer-based inner layer (CN110373572A), etc. These methods improve the penetration and explosion of fragments to varying degrees from the perspectives of increasing fragment strength, density, and detonation performance. However, none of them considered increasing the damage effect from the perspective of increasing the contact area of ​​a single fragment

Method used

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  • A simple sandwich type composite structure energy storage fragment and its preparation method
  • A simple sandwich type composite structure energy storage fragment and its preparation method
  • A simple sandwich type composite structure energy storage fragment and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see Figure 1-3 , a simple sandwich-type composite structure energy storage fragment, including a spiral structure A1, an active energy-containing structure B2 and a tower spring 3, the stretchable spiral structure A1 includes a connecting base 101, and the connecting base 101 is fixedly connected with A fixed rod 102, 3 sets of tower springs are connected to the fixed rod 102, the active energetic structure B2 includes a fixed disc 201, the center of the fixed disc 201 is provided with a through hole 202, the diameter of the through hole 202 is larger than that of the fixed rod 102 in diameter.

[0030] The top of the fixing rod 102 is fixedly connected with a pointed rod head 1021 or a retractable buckle-type rod head 1022 , and the pointed rod head 1021 or shrinkable buckle-type rod head 1022 is matched with the through hole 202 . .

[0031] Compared with the single inert fragments or metal / polytetrafluoroethylene active fragments reported in the past, the energy s...

Embodiment 2

[0033] see Figure 1-4 , combined with the basis of Example 1, the difference is that a simple sandwich type composite structure energy storage fragment preparation method, the specific steps are as follows:

[0034] Step 1: Prepare a steel wire with good high temperature ablation resistance, toughness and plasticity through a reasonable ratio of each element, and obtain a stretchable spiral structure A1 through winding, heat treatment and elastic performance testing;

[0035] Step 2: Put active metal / inert metal filler / polytetrafluoroethylene powder in an all-round planetary ball mill to mix and mix, and place it in a specific molding mold for pressing and sintering to obtain a "rivet" fixing function Active energetic structure B2;

[0036] Step 3: Place the tower spring 3 on the fixed rod 102 of the telescopic spiral structure A1, compress the tower spring 3 downward, and then melt the pointed head 1021 of the fixed rod 102 with a hot-melt device until The pointed rod head...

Embodiment 3

[0043] Based on Example 1-2 but different in that,

[0044] (1) Prepare a stretchable spiral structure A;

[0045] Preparation of steel wire with high temperature ablation resistance, toughness and plasticity:

[0046] C=0.08%, Mn=2.00%, P=0.035%, S=0.015%, Si=0.75%, Cr=18.00%, Ni=8.00%, N=0.10%, Fe=71.02%.

[0047] A stretchable helical structure A is obtained by winding, heat-treating, and testing the elastic properties of the above-mentioned steel wire.

[0048] (2) Preparation of sandwich composite structure energy storage fragments.

[0049] Powder mixing: the mass ratio of each component is: aluminum powder / magnesium powder / tungsten powder / PTFE=10 / 10 / 30 / 50, that is, weigh 10g of aluminum powder, 10g of magnesium powder, 30g of tungsten powder, PTFE 50g of ethylene powder, dried, placed in an all-round planetary ball mill and mixed for 2h, rotating speed 200rpm / min, mixed evenly;

[0050] Molding: Add the above-mentioned uniformly mixed powder into a special molding m...

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Abstract

The invention discloses a simple sandwich type composite structure energy storage fragment and a preparation method thereof, which belong to the technical field of energetic materials and active fragment materials; a simple sandwich type composite structure energy storage fragment includes a spiral structure A, an active Energy structure part B and tower spring, the flexible spiral structure part A includes a connection base, a fixed rod is fixedly connected to the connection base, the tower spring sleeve is connected to the fixed rod, and the active energy-containing Structural part B includes a fixed disc, and the center of the fixed disc is provided with a through hole. The diameter of the through hole is larger than the diameter of the fixed rod, which improves the penetration of energetic fragments of existing fluoropolymer-based reactive materials. And the power of explosion, also provides a simple sandwich composite structure energy storage fragments preparation method, the method adopts rolling forming, winding, heat treatment, powder mixing, molding, sintering, fixing and other processes, the process is simple, no special The process requires the invention.

Description

technical field [0001] The invention relates to the technical field of energy-containing materials and active fragment materials, in particular to a simple sandwich type composite structure energy storage fragment and a preparation method thereof. Background technique [0002] Fluoropolymer-based reactive materials are metastable energetic composites mainly composed of fluoropolymers with high fluorine content (>70wt%) and metal particles or fibers, also known as impact-initiated energetic materials (Impact-initiated ReactiveMaterials). Due to its high energy level, sufficient insensitivity and unique energy release characteristics and other excellent physical and chemical properties, a large number of research reports have been carried out at home and abroad in recent years. Fluoropolymer-based reactive materials have attracted extensive attention due to their great application prospects in the military. When the damage-enhanced fragments prepared from this material st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K3/08
CPCC08K3/08C08K2003/0812C08K2003/0887C08L27/18
Inventor 束庆海赵帅吕席卷邹浩明杜君宜王宏佳高峰文萍姬龙贾鑫
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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