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Ceramic composite material and preparation method thereof, bulletproof plate and armored protective equipment

A ceramic composite material, bulletproof plate technology, applied in protective equipment, armor, offensive equipment, etc., can solve the problems of increasing the overall weight, unable to meet the bulletproof requirements of armored protective equipment, and high density.

Active Publication Date: 2021-08-20
HENGYANG KAIXIN SPECIAL MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional structural ceramics have low fracture toughness, low flexural strength, and high density, resulting in weak multi-strike performance.
With the development of new armor-piercing and armor-piercing equipment, traditional structural ceramics can no longer meet the bulletproof requirements of armor protective equipment
Technicians use small pieces of ceramics to assemble and splice bulletproof panels. Compared with integral ceramic bulletproof panels, the thickness of spliced ​​bulletproof panels should be increased by 20% to 30%, which increases the overall weight. The joints also become the weak area of ​​bulletproof, which makes armor protection materials face great challenges

Method used

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  • Ceramic composite material and preparation method thereof, bulletproof plate and armored protective equipment
  • Ceramic composite material and preparation method thereof, bulletproof plate and armored protective equipment
  • Ceramic composite material and preparation method thereof, bulletproof plate and armored protective equipment

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preparation example Construction

[0065] One embodiment of the present invention provides a method for preparing a ceramic composite material, comprising the following steps S10-S30.

[0066] Step S10 , mixing the raw materials of the ceramic green body of the ceramic composite material to make slurry, drying and granulating to obtain granulated powder.

[0067] In some of these embodiments, in step S10, the step of mixing and pulping the raw materials includes the following steps S11-S12.

[0068] Step S11, mixing the main ceramic material, binder and solvent to obtain a mixture.

[0069] Step S12, mixing the first slurry obtained in step S11 with chopped carbon fibers to obtain a ceramic composite slurry.

[0070] Further, the viscosity of the ceramic composite slurry is 20mpa·s˜60mpa·s.

[0071] In one embodiment, in step S11, the solvent used is selected from water or an organic solvent, and further, the solvent is selected from at least one of water, acetone and absolute ethanol.

[0072] It should be ...

Embodiment 1

[0101]1. According to the mass percentage, the ceramic main material of the following components is provided: 70wt% silicon nitride powder, 15wt% silicon carbide powder, 5wt% boron carbide powder, 10wt% sintering aid (yttrium oxide and oxide Aluminum, the mass ratio of the two is 5:2); the ceramic main materials are mixed, ethanol is used as the ball milling solvent, PVB is added as the binder, silicon nitride balls are used as the ball milling medium, and the roller mill is used for ball milling. The ball milling time For 3 hours, a mixture was obtained. Then, the chopped carbon fibers accounting for 1% of the total mass of the silicon nitride powder, silicon carbide powder and boron carbide powder were ball milled for 1 h by a roller mill to obtain a ceramic slurry with a viscosity of 40 mPa·s. Among them, the purity of silicon nitride powder is 99.6%, the mass content of α-phase silicon nitride is 92%, the particle size D50 of silicon nitride powder is 0.6 micron; the lengt...

Embodiment 2

[0106] Step 1 is basically the same as Step 1 of Example 1, except that the main ceramic material includes: 65wt% silicon nitride powder, 20wt% silicon carbide powder, 5wt% boron carbide powder, 10wt% sintered Auxiliary; Other conditions are the same as step 1 of Example 1.

[0107] Steps 2) to 4 are basically the same as steps 2) to 4 of Example 1, and step 3) has a density of 1.75g / cm3 for the ceramic green body 3 ; Step 4 infiltration and sintering for 3 hours, the density of the obtained ceramic composite material is 2.96g / cm 3 .

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Abstract

The invention relates to a ceramic composite material and a preparation method thereof, a bulletproof plate and armor protection equipment. The ceramic composite material is prepared from a ceramic green body through permeation sintering, and a permeation material used for permeation sintering is at least one of silicon, pure metal, metal alloy and silicon alloy; and the raw materials of the ceramic green body comprise a ceramic main material, short carbon fibers and a binder, wherein the ceramic main material comprises the following components in percentage by mass: 60%-90% of silicon nitride powder, 5%-30% of silicon carbide powder, 1%-10% of boron carbide powder and 1%-10% of a sintering aid; and the mass of the short carbon fibers is 0.5-4% of the total mass of the silicon nitride powder, the silicon carbide powder and the boron carbide powder. The ceramic composite material has excellent bending strength, toughness and hardness.

Description

technical field [0001] The invention relates to the technical field of ceramic material preparation, in particular to a ceramic composite material and a preparation method thereof, a bulletproof plate and armor protection equipment. Background technique [0002] Ceramic materials have excellent comprehensive properties, including high specific stiffness, high strength and good chemical inertness. At the same time, ceramic materials also have the advantages of low density, high hardness and high compressive strength. The excellent performance of ceramic materials makes it have great potential in the application of armor protection systems, and has been widely used in the preparation of armor protection equipment such as body armor and armored vehicles. [0003] In traditional technology, the ceramic materials used in the preparation of armor protective equipment are structural ceramics with anti-ballistic properties. According to the classification of raw materials, structur...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/584C04B35/622C04B35/64C04B41/88F41H5/00
CPCC04B35/584C04B35/622C04B35/64C04B41/5133C04B41/88F41H5/00C04B2235/3826C04B2235/3821C04B2235/3217C04B2235/3225C04B2235/5445C04B2235/5248C04B2235/5436C04B2235/77C04B41/5096C04B41/4545
Inventor 曾小锋肖亮朱福林李勇全陈巨喜
Owner HENGYANG KAIXIN SPECIAL MATERIAL TECH CO LTD