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Preparation method of bulletproof ceramic entire board

A technology of bulletproof plates and ceramics, which is applied in the direction of protective equipment, ceramic molding machines, armor plate structures, etc. It can solve the problems of cumbersome process, easy generation of air bubbles, and difficulty in forming laminated ceramics in one step.

Active Publication Date: 2018-09-11
NINGBO HATAILEI CARBIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is cumbersome, and it is difficult to realize the method of forming laminated ceramics in one step, and obvious defects such as bubbles and cracks are easy to occur between layers.

Method used

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  • Preparation method of bulletproof ceramic entire board
  • Preparation method of bulletproof ceramic entire board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 70wt% silicon carbide powder, 5wt% carbon black, 0.5wt% ammonium polyacrylate, 0.5wt% phenolic resin, and 24wt% deionized water were ball milled and mixed for 24 hours to obtain the required slurry.

[0035] (2) Use a high-pressure grouting machine to inject the prepared slurry into the mold, wherein the front mold 1 and the rear mold 2 of the mold are both porous resin molds, and the internal shape of the front mold 1 is a cavity that is the same shape as the overall bulletproof plate body, wherein the inner wall of the cavity of front mold 1 is provided with a grouting hole, and the rear mold 2 is a curved surface with the same curvature as the concave surface of the overall bulletproof plate. ;

[0036] (3) The above-prepared slurry is molded into the required green sample by a high-pressure grouting machine. Keep the pressure for 200s; at this time, the upper layer 4 and the lower layer 5 of the integral bulletproof plate are formed; then reduce the grouting pr...

Embodiment 2

[0040] (1) 70wt% silicon carbide powder, 5wt% carbon black, 0.5wt% ammonium polyacrylate, 0.5wt% phenolic resin, and 24wt% deionized water were ball milled and mixed for 24 hours to obtain the required slurry.

[0041] (2) Use a high-pressure grouting machine to inject the prepared slurry into the mold, wherein the front mold 1 and the rear mold 2 of the mold are both porous resin molds, and the internal shape of the front mold 1 is a cavity that is the same shape as the overall bulletproof plate body, wherein the inner wall of the cavity of front mold 1 is provided with a grouting hole, and the rear mold 2 is a curved surface with the same curvature as the concave surface of the overall bulletproof plate. ;

[0042](3) The above-prepared slurry is molded into the required green sample by a high-pressure grouting machine. Keep the pressure for 220s; at this time, the upper layer 4 and the lower layer 5 of the integral bulletproof plate are formed; then reduce the grouting pre...

Embodiment 3

[0046] (1) 65wt% boron carbide powder, 8wt% graphite powder, 1.0wt% ammonium polyacrylate, 0.5wt% xanthan gum, and 25.5wt% deionized water were ball milled and mixed for 24 hours to obtain the required slurry.

[0047] (2) Use a high-pressure grouting machine to inject the prepared slurry into the mold, wherein the front mold 1 and the rear mold 2 of the mold are both porous resin molds, and the internal shape of the front mold 1 is a cavity that is the same shape as the overall bulletproof plate body, wherein the inner wall of the cavity of front mold 1 is provided with a grouting hole, and the rear mold 2 is a curved surface with the same curvature as the concave surface of the overall bulletproof plate. ;

[0048] (3) The above-prepared slurry is molded into the required green sample by a high-pressure grouting machine, wherein the grouting condition is that the grouting molding pressure is increased from 0.1MPa to 5MPa within 50s, and at a high pressure of 5MPa Hold the p...

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Abstract

The invention discloses a preparation method of a bulletproof ceramic entire board. The preparation method of the bulletproof ceramic entire board is characterized by comprising the following steps of(1) preparing a slurry: placing raw materials into a mixing and pulping device, ball milling for 10 to 24h, and uniformly stirring to obtain the slurry; (2) adopting a high-pressure grouting formingmachine for injecting the prepared slurry into a mold; (3) adopting a two-step pressurizing manner for pressurizing and grouting forming; (4) drying a ceramic green body in a drying oven at the temperature of 30 to 150 DEG C for 5 to 24 hours, and obtaining a ceramic dry blank; (5) sintering the ceramic dry blank in a sintering furnace so as to obtain a ceramic inserting plate. The method can be used for processing the layered bulletproof ceramic entire board at one step through changing a formula of the ceramic slurry and two-step forming process conditions, and is simple in preparation process and excellent in bulletproof performance.

Description

technical field [0001] The invention belongs to the technical field of ceramic molding, and relates to a method for molding and preparing a bulletproof ceramic whole plate. Background technique [0002] Ceramic bulletproof plate is the most important component of bulletproof vest, and existing ceramic bulletproof plate mainly includes two kinds of splicing of small pieces and integral type. Compared with the integral bulletproof plate, the small piece spliced ​​bulletproof plate is not only complicated to produce, but also has higher safety hazards at the seams. However, there are no seams in the overall bulletproof plate, and the overall bulletproof ceramic plate is easy to cause the entire plate to rupture when it is hit by a bullet, resulting in a significant drop in the ability of the overall bulletproof plate to shoot multiple bullets. [0003] The patent number is CN104016680B, published on 2016.01.20, "a B4C-based ceramic composite material and its preparation method...

Claims

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Application Information

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IPC IPC(8): C04B35/563C04B35/565C04B35/622F41H5/04B28B1/26
CPCB28B1/265C04B35/563C04B35/565C04B35/622C04B2235/6022F41H5/0414
Inventor 邬国平熊礼俊林超王坚
Owner NINGBO HATAILEI CARBIDE
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