Manufacturing method of yawing composite ceramic bulletproof plate

A technology of composite ceramics and bulletproof plates, applied in the structure of armor plates, chemical instruments and methods, protective clothing, etc., can solve problems that cannot meet the requirements of kinetic energy projectile blocking, single structure bulletproof plates to reduce surface density and bulletproof requirements, and achieve The effect of improving the anti-ballistic performance

Inactive Publication Date: 2018-10-30

TSINGHUA UNIV +1

5 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Bulletproof panels made of a single bulletproof material can no longer meet the blocking of kinetic energy bullets

It is very difficult fo...

Abstract

The invention discloses a manufacturing method of a yawing composite ceramic bulletproof plate. The manufacturing method comprises the following steps that (1) an organic or inorganic light material is selected to restrain a ceramic ball to form a light yawing layer; (2) a material of the ceramic ball is selected; (3) a yawing unit is prepared; (4) the ceramic bulletproof plate is prepared; (5) aback plate is prepared; and (6) compression molding forming is conducted. According to the manufacturing method, by ingeniously restraining the ceramic ball, when being shot into the composite bulletproof plate, a bullet makes contact with the ceramic ball firstly, the running trajectory of the bullet is changed through the circular-arc surface of the ceramic ball and the light material, thus thebullet vertically shot into the bulletproof plate is yawed, the kinetic energy component of the bullet striking the bulletproof plate is lowered, and the bulletproof capacity of the bulletproof plateis improved; and according to the yawing composite bulletproof plate manufactured through the method, the bulletproof property of the bulletproof plate is improved, the surface density is lowered, andthe bulletproof plate is suitable for substituting an existing bulletproof armor.

Application Domain

Lamination ancillary operationsProtective equipment +6

Technology Topic

Composite ceramicMetallurgy +3

Image

Examples

Experimental program(1)

Example Embodiment

[0036] Example 1

[0037] Prepare 0.2kg of GUR 4113UHMW-PE ultra-high molecular polyethylene powder (UHMWPE).

[0038] Prepare a piece of foamed aluminum sheet with a size of 300×250×20 (unit: mm), with a unit volume density of 0.4g/cm 3.

[0039] Prepare 99.5% alumina ceramic balls with a diameter of 12mm and a quantity of 340.

[0040] Prepare hot-pressed silicon nitride ceramic board, size 112×112×11 (unit: mm).

[0041] Prepare the iron-based amorphous ribbon with a width of 170mm, a thickness of 0.03mm, and a weight of 2kg.

[0042] Prepare SY-24C resin glue.

[0043] Prepare a set of composite mold for bulletproof board.

[0044] Process steps:

[0045] (1) First, process the foam aluminum sheet into figure 1 The structure shown.

[0046] (2) Put the structure obtained in step (1) into the mold on the worktable of the plastic press, with the spherical concave side facing up, and fill the spherical concave with 340 alumina ceramic balls with a diameter of 12 mm, and then The ultra-high molecular weight polyethylene powder is evenly dispersed around the ceramic ball.

[0047] (3) Preheat the resultant from step (2) to 125° C., heat preservation for 20 minutes, and a pre-pressure of 1 t to form a light yaw layer.

[0048] (4) Raise the temperature of the resultant in step (3) to 235℃, increase the pressure to 5t, keep heat preservation and pressure for 20min, then lower the temperature and demould, complete the preparation of the light yaw layer, see figure 2 Shown.

[0049] (5) Use a surface grinder for hot-pressed silicon nitride ceramics, install diamond grinding wheels and diamond saw blades respectively, grind and bond them into ceramic bulletproof plates, such as image 3.

[0050] (6) Cut the iron-based amorphous steel thin strip with a thickness of 0.03mm, and the size of each layer is 300×250×0.03 (unit: mm), ensuring that the cutting direction of the first layer and the cutting direction of the second layer are orthogonal. Such repeated cyclic stacking, the layers are also arranged orthogonally when they are bonded.

[0051] (7) Place the resultant in step (6) in a hot pressing mold, press 5t, heat at 120°C, heat preservation and pressure for 2 hours to solidify, and complete the processing of the amorphous tape laminated backplane.

[0052] (8) The light yaw layer obtained in step (4), the ceramic bulletproof plate obtained in step (5), and the amorphous ribbon laminate obtained in step (7) are glued and bonded, and then put into a hot pressing mold and heated 120℃, pressure 5t, heat preservation and pressure maintenance for 2 hours, complete the overall preparation of lightweight yaw composite bulletproof board. Such as Figure 4 Shown.

PUM

Property	Measurement	Unit
Thickness	0.03	mm

Description & Claims & Application Information

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