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Bulletproof composite armor and preparation method thereof

An armor and bulletproof technology, applied in protective equipment, armor, protective equipment, etc., can solve problems such as the inability to meet the requirements of composite bulletproof decks to resist multiple gunshots, the easy aging of polymer adhesives, and the inability to resist armor-piercing incendiary bombs. , to avoid aging failure, improve hardness, improve heat conduction and heat dissipation effect

Active Publication Date: 2020-06-23
SUZHOU FIRST ELEMENT NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the impact of armor-piercing incendiary bombs, the polymer binder is prone to aging and failure, resulting in the disappearance of the crack arrest effect of the aramid cloth bonded on the ceramic surface. The need to withstand multiple shootings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment relates to a preparation method of composite armor for defending against 7.62mm armor-piercing projectiles, comprising the following steps:

[0034] 1) Mix 921g boron carbide (Saifu Nano, particle size less than 1μm), 92g nano-carbon fiber (Suzhou First Element CNTcr), 27g phenolic resin and 1000g high-purity water, stir evenly to obtain nano-carbon fiber-boron carbide composite slurry, and then Spray granulation (the air inlet temperature of spray granulation is 180-200°C, and the air outlet temperature is 98-110°C), to obtain nano-carbon fiber-boron carbide composite raw meal;

[0035] 2) Fill all the composite raw materials prepared in step 1 into carbon fiber woven bags, sew them up, and place them in a 0.08m 2 In the individual chest plate mold, 350MPa cold press to form a green body, and then under the pressure of 50MPa, heated to 2200 ° C at a certain heating rate, heat preservation and pressure holding for 20 minutes, hot pressing and sintering i...

Embodiment 2

[0039] This embodiment relates to a method for preparing composite armor for defensive 53-type armor-piercing incendiary bombs, comprising the following steps:

[0040] 1) Mix 1595g boron carbide (Saifu Nano, particle size less than 1μm), 160g nano-carbon fiber (Suzhou First Element CNTcr), 47g phenolic resin and 1800g high-purity water, stir evenly to obtain nano-carbon fiber-boron carbide composite slurry, and then Spray granulation (the air inlet temperature of spray granulation is 180-200°C, and the air outlet temperature is 98-110°C), to obtain nano-carbon fiber-boron carbide composite raw meal;

[0041] 2) Fill all the composite raw materials prepared in step 1 into carbon fiber woven bags, sew them up, and place them in a 0.08m 2 In the individual chest plate mold, 350MPa cold press to form a green body, and then under the pressure of 50MPa, heated to 2200°C at a certain heating rate, heat preservation and pressure holding for 20min, hot pressing and sintering into a 9m...

Embodiment 3

[0045]This embodiment relates to a method for preparing composite armor for defending against 12.7mm armor-piercing incendiary bombs, comprising the following steps:

[0046] 1) Mix 2763g boron carbide (Saifu Nano, particle size less than 1μm), 276g nano-carbon fiber (Suzhou First Element CNTcr), 81g phenolic resin and 3000g high-purity water, stir evenly to obtain nano-carbon fiber-boron carbide composite slurry, and then Spray granulation (the air inlet temperature of spray granulation is 180-200°C, and the air outlet temperature is 98-110°C), to obtain nano-carbon fiber-boron carbide composite raw meal;

[0047] 2) Fill all the composite raw materials prepared in step 1 into carbon fiber woven bags, sew them up, and place them in a 0.08m 2 In the individual chest plate mold, 350MPa cold press to form a green body, and then under 50MPa pressure, heated to 2200°C at a certain heating rate, heat preservation and pressure holding for 20min, hot pressing and sintering into a 15m...

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Abstract

The invention discloses a bulletproof composite armor and a preparation method thereof, and belongs to the technical field of composite materials. The preparation method of the bulletproof composite armor comprises the following steps: 1) mixing boron carbide, high-thermal-conductivity carbon nano fibers, phenolic resin and high-purity water, uniformly stirring to obtain composite slurry, and carrying out spray granulation to obtain a composite raw material; (2) filling the composite raw material prepared in the step (1) into a carbon fiber woven bag, sewing the bag, putting the bag into a mold, carrying out cold pressing to form a green body, and carrying out high-temperature hot-pressing and sintering on the green body to obtain a composite ceramic plate; and 3) hot-pressing and compounding the composite ceramic plate prepared in the step 2), aramid fiber cloth and an ultra-high molecular weight polyethylene back plate in a high-temperature autoclave to obtain the bulletproof composite armor. The cracking of the ceramic plate in all directions can be prevented, and the high-temperature resistance of a crack stopping layer is improved.

Description

technical field [0001] The invention relates to a technology in the field of composite materials, in particular to a bulletproof composite armor and a preparation method thereof. Background technique [0002] Compared with alumina, zirconia, and silicon carbide, boron carbide has lower density, higher hardness, strength, elastic modulus and other excellent properties, and has gradually replaced the above materials in the field of bulletproof armor. However, its flexural strength and fracture toughness are still low, and its brittleness is relatively high, which limits the application of boron carbide ceramics. [0003] The application of Chinese Patent Document No. CN101671193A discloses a carbon fiber / boron carbide composite ceramic and its preparation method, wherein the mass of boron carbide accounts for 45%-60%, and carbon fiber accounts for 40%-55%. The invention utilizes the toughening performance of carbon fiber to increase the hardness and fracture toughness by 10%-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/02B32B27/12B32B27/32B32B27/34B32B37/06B32B37/10C04B35/563C04B35/80C04B35/622F41H5/04
CPCB32B5/02B32B5/26B32B9/005B32B9/047B32B27/12B32B27/32B32B37/06B32B37/10C04B35/563C04B35/622F41H5/0428B32B2262/0261B32B2262/106B32B2307/302B32B2307/304B32B2307/306B32B2307/558B32B2571/02C04B2235/5248C04B2235/48C04B2235/5264C04B2235/526C04B2235/656C04B2235/6567C04B2235/77C04B2235/96
Inventor 刘媛赵海静董明
Owner SUZHOU FIRST ELEMENT NANO TECH
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