A kind of bulletproof ceramic sheet and preparation method thereof

A technology of ceramic sheets and bulletproof ceramics, applied in protective equipment, offensive equipment, personnel protection equipment, etc., can solve the problems of unfavorable mass production, expensive materials, difficult continuous production, etc., achieve good impact load transfer effect, promote Interfacial bonding, the effect of promoting low temperature sintering

Active Publication Date: 2017-02-08
HUNAN ZHONGTAI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] 1. The molding process is relatively complicated (including three-time molding and gel injection, connection of different parts, etc.);
[0023] 2. Bulletproof materials with carbides must be sintered in an inert atmosphere, which requires high production equipment and is difficult to achieve continuous production;
[0024] 3. There are many raw materials, and some materials are expensive, which is not conducive to mass production;
[0025] 4. The sintering temperature is too high, resulting in an increase in the cost of the final product

Method used

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  • A kind of bulletproof ceramic sheet and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0052] A preparation method of a bulletproof ceramic sheet, comprising the steps of:

[0053] (1) Al 2 o 3 , Y 2 o 3 and MgO powder were weighed according to 97:1.5:1.5 (mass ratio) and put into a ball mill jar, adding deionized water with the same quality as the powder, and using corundum balls as the grinding medium for wet grinding. After the wet grinding process was completed, Transfer the slurry from the ball mill jar to a porcelain vessel and dry it in a forced air oven for 70 o Dry at a temperature of C until constant weight, put the powder into the ball mill tank again for dry grinding, add water to the powder after dry grinding, and carry out aging and granulation process, and then Al 2 o 3 +Y 2 o 3 +MgO composition is pressed for the first time to make a composition sheet of 2mm flake style;

[0054] (2) Weigh SiC and Si powder according to 85:15 (mass ratio) and put them into a ball mill tank, add deionized water of the same quality as the powder, and use co...

Embodiment 2

[0059] A preparation method of a bulletproof ceramic sheet, comprising the steps of:

[0060] (1) Al 2 o 3 , Y 2 o 3 and MgO powder are weighed according to 98:1:1 (mass ratio) and put into a ball mill tank, add deionized water with the same quality as the powder, and use corundum balls as the grinding medium for wet grinding. After the wet grinding process is completed, Transfer the slurry from the ball mill jar to a porcelain vessel and dry it in a forced air oven at 80 o Under the temperature condition of C, dry to constant weight, put the powder into the ball mill tank again for dry milling, add water to the dry milled powder for aging and granulation process, and then put Al 2 o 3 , Y 2 o 3 and the MgO composition is initially compressed to make a composition sheet of 2.5mm flake style;

[0061] (2) Weigh SiC and Si powder according to 80:20 (mass ratio) and put them into a ball mill tank, add deionized water of the same quality as the powder, and use corundum bal...

Embodiment 3

[0066] A preparation method of a bulletproof ceramic sheet, comprising the steps of:

[0067] (1) Al 2 o 3 , Y 2 o 3 and MgO powder are weighed according to 99:0.5:0.5 (mass ratio) and put into a ball mill jar, add deionized water with the same quality as the powder, and use corundum balls as the grinding medium for wet grinding. After the wet grinding process is completed, Transfer the slurry from the ball mill jar to a porcelain vessel and dry it in a forced air oven for 90 o Under the temperature condition of C, dry to constant weight, put the powder into the ball mill tank again for dry milling, add water to the dry milled powder for aging and granulation process, and then put Al 2 o 3 , Y 2 o 3 and MgO composition initial compression, make the composition sheet of 3mm flake style;

[0068] (2) Weigh SiC and Si powder according to 75:25 (mass ratio) and put them into a ball mill tank, add deionized water of the same quality as the powder, and use corundum balls as ...

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Abstract

The invention relates to a bulletproof ceramic chip and a preparation method thereof, wherein the first layer, the third layer and the fifth layer of the bulletproof ceramic chip are prepared from the following components: 82-99% of Al2O3 + 9-0.5% of Y2O3 + 9-0.5% of MgO in terms of mass percent; the second layer and the fourth layer of the bulletproof ceramic chip are prepared from the following components: 70-95% of SiC + 5-30% of Si in terms of mass percent; a thickness ratio of an Al2O3 layer to an SiC layer of the sintered bulletproof ceramic chip with a composite sandwich structure is 10-20:1; the bulletproof ceramic chip can be used as a hard bulletproof material for a human body and an armor. According to the preparation method, an oxidation product SiO2 of Si is used for wrapping the surface of SiC micro powder, so that the oxidization of the SiC micro powder is prevented, and the bulletproof ceramic chip with a layer structure is obtained; SiO2 is reacted with Al2O3, so that a mullite phase is formed, the effective combination between the Al2O3 layer and an SiC+Si layer is promoted, and therefore the ceramic chip transfers energy in the process of suffering from impacts.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a bulletproof ceramic sheet and a preparation method thereof. Background technique [0002] Human protective equipment has a broad market prospect in the fields of national defense and social security. All countries in the world attach great importance to this and have developed a variety of new bulletproof materials. The specific requirements for bulletproof materials for different purposes are different, but the basic requirements include the following three aspects: (1) The more energy absorbed by the bulletproof material, the better, which is the most basic requirement; (2) The better the quality of the bulletproof material The lighter the better, the bulletproof vests and bulletproof helmets made of light bulletproof materials are light, comfortable, flexible, and have a good psychological feeling; Competitive in the market. The ceramic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41H1/00C04B35/10C04B35/565C04B35/622
Inventor 高朋召颜进林海军高波林明清吴传清
Owner HUNAN ZHONGTAI SPECIAL EQUIP
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