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Bulletproof composite board

A composite board and disc technology, applied in protective equipment, offensive equipment, personnel protection equipment, etc., can solve the problems of low hardness, inability to effectively block high-speed bullets, and poor destructive ability of bullets

Inactive Publication Date: 2010-03-31
杨珍芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although synthetic fibers have good performance in making bulletproof vests, when they are used alone in bulletproof panels, due to their low hardness, their destructive ability to bullets is worse than that of traditional steel plates, and they cannot effectively block high-speed bullets.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see Figure 4 . When preparing the absorbent layer, 4 sheets of non-woven fabrics are stacked, the fibers in adjacent non-woven fabrics are arranged at 45 degrees, and the stacked non-woven fabrics are subjected to a pressure of 1.5 MPa at 95°C to obtain a non-woven fabric laminate 21a. Take 4 non-weft fabric laminates 21a and 3 knitted fabrics 21b for stacking (only partially superimposed non-weft fabric laminates and knitted fabrics are shown in the figure), when superimposing, place a knitted fabric in the middle of each two non-weft fabric laminates. The stacked non-woven fabric and knitted fabric were heated to 115° C. and a pressure of 2.5 MPa was applied to pre-press the molded part. The pre-pressed molded parts were placed in a vacuum oven with a temperature of 128° C. for 20 minutes, and the vacuum degree in the vacuum oven was 0.18 kpa. After vacuum heat preservation treatment, cool to room temperature, take out the pre-pressed molding, put it in a hot-press...

Embodiment 2

[0046] When preparing the absorbent layer, take 4 pieces of non-weft fabrics and stack them, the fibers in the adjacent non-weft fabrics are arranged at 90 degrees, and apply a pressure of 1.5 MPa to the superimposed non-weft fabrics at 95°C to obtain a non-weft fabric laminate. Take 4 non-weft laminations and 3 knitted fabrics and stack them. When superimposing, place a knitted fabric in the middle of each two non-wefted laminations. The stacked non-woven fabric and knitted fabric were heated to 115° C. and a pressure of 2.5 MPa was applied to pre-press the molded part. The pre-pressed molded parts were placed in a vacuum oven with a temperature of 128° C. for 20 minutes, and the vacuum degree in the vacuum oven was 0.18 kpa. After vacuum heat preservation treatment, cool to room temperature, take out the pre-pressed molding, put it in a hot pressing mold, heat up to 127°C, apply a pressure of 16MPa for 30min, and cool to room temperature to obtain an absorption layer.

[00...

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Abstract

The invention discloses a bulletproof composite board comprising an buffer layer as the external layer, an absorption layer connected with the buffer layer, and a barrier layer connected with the absorption layer, wherein the buffer layer comprises a plurality of disks superposed into a scalelike structure, and the disks are provided with a convex surface towards the external layer; the absorption layer comprises weftless fabric pressure layers and knitted fabrics, which are superposed, and the weftless fabric pressure layers and the knitted fabrics comprise fibers of which the strength is atleast 15 cN / dtex and the modulus is at least 390 cN / dtex; and the barrier layer comprises a metal plate of which the tensile strength is greater than 1000 MPa. A bullet is deflected under the action of the convex surface of the disks, and the penetrating capability of the bullet is reduced; under the alternate actions of the weftless fabrics and the knitted fabrics, the energy of the bullet is quickly transferred and absorbed; and finally, the bullet is effectively prevented when getting into contact with the barrier layer with high strength.

Description

technical field [0001] The invention relates to protective equipment, in particular to a bulletproof composite board. Background technique [0002] Bulletproof plate is an item that can protect people or property from bullets and armor-piercing bullets. In order to achieve the purpose of bulletproof, the traditional bulletproof plate is generally made of bulletproof steel plate. [0003] Because the main function of the bulletproof plate is to prevent the penetration of high-speed bullets to it, that is, when the high-speed bullet hits the bulletproof plate and destroys it, the kinetic energy of the bullet is released by the bulletproof plate to achieve the purpose of bulletproofing. In order to give the bulletproof plate a high The bulletproof performance of the bulletproof plate must have high strength and hardness. Therefore, people have been trying to improve the strength and hardness of the steel plate itself. For example, Chinese patent CN1814845A discloses a method...

Claims

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Application Information

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IPC IPC(8): F41H1/02F41H1/00
Inventor 周成程
Owner 杨珍芬
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