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Composite bulletproof plate and preparation method thereof

A technology of composite materials and bulletproof plates, applied in the field of composite materials, can solve the problems of three-dimensional braids that are easy to break, and achieve the effects of improving bullet impact resistance, avoiding breakage, and high bulletproof performance

Active Publication Date: 2022-04-15
苏州柔陶新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has a toughening effect to a certain extent, the interlaced warp and weft yarns of the three-dimensional woven fabric are easily broken under the impact of bullets

Method used

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  • Composite bulletproof plate and preparation method thereof
  • Composite bulletproof plate and preparation method thereof

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preparation example Construction

[0024] Such as figure 1 As shown, the embodiment of the present invention relates to a method for preparing an alumina-based ceramic composite bulletproof plate, comprising the following steps:

[0025] Impregnation: Pressurize and impregnate the aluminum oxide fiber non-weft cloth in the impregnating liquid aluminum sol with a solid content of 10% to 50% under vacuum conditions, the pH of the impregnating liquid aluminum sol is 3 to 10, and the pressure is 2 to 5 MPa;

[0026] Granulation: choose ɑ-Al with an average particle size of 1-5 μm 2 o 3 Powder, according to aluminum sol and ɑ-Al 2 o 3 Powder weight ratio 5:95~1:1 to ɑ-Al 2 o 3 Adding a binder aluminum sol with a solid content of 10% to 50% to the powder is granulated to obtain ceramic granules;

[0027] Lamination: The alumina fiber non-weft cloth obtained in the impregnation step is pressed according to [0° / 90°] T The method is to lay layers in the mould, the mold is preferably a steel mold mould, and a laye...

Embodiment 1

[0034] Impregnation: Pressurize and impregnate the alumina fiber non-weft cloth in the aluminum sol with a solid content of 20% under vacuum conditions, and the pressure is 4MPa;

[0035] Granulation: choose ɑ-Al with an average particle size of 5 μm 2 o 3 Powder, to ɑ-Al 2 o 3 Add aluminum sol with a solid content of 30% to the powder and then granulate to obtain ceramic particles. The weight ratio of aluminum sol in ceramic particles is 10%, that is, aluminum sol and ɑ-Al 2 o 3 Powder weight ratio is 1:9;

[0036] Lamination: The alumina fiber non-weft cloth obtained in the impregnation step is pressed according to [0° / 90°] T The method is to lay layers in the steel mold, and evenly spread a layer of ceramic particles between two adjacent layers of alumina fiber non-weft cloth to obtain a five-layer structure of laid materials, and dehydrate the laid materials;

[0037] Molding: Put the steel mold in a hydraulic press, heat it up to 120°C, keep it warm for 4 hours, and...

Embodiment 2

[0042] Impregnation: Pressurize and impregnate the alumina fiber non-weft cloth in the aluminum sol with a solid content of 30% under vacuum conditions, and the pressure is 2MPa;

[0043] Granulation: choose ɑ-Al with an average particle size of 3 μm 2 o 3 Powder, to ɑ-Al 2 o 3 Add aluminum sol with a solid content of 30% to the powder and then granulate to obtain ceramic particles. The weight ratio of aluminum sol in ceramic particles is 15%, that is, aluminum sol and ɑ-Al 2 o 3 The powder weight ratio is 3:17;

[0044] Lamination: The alumina fiber non-weft cloth obtained in the impregnation step is pressed according to [0° / 90°] TThe method is to lay layers in the steel mold, and evenly spread a layer of ceramic particles between two adjacent layers of alumina fiber non-weft cloth to obtain a five-layer structure of laid materials, and dehydrate the laid materials;

[0045] Molding: Put the steel mold in a hydraulic press, heat it up to 150°C, keep it warm for 1 hour, ...

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Abstract

A composite bulletproof board and a preparation method thereof belong to the technical field of composite materials. The preparation method of the bullet-proof plate of composite material comprises the following steps: impregnation-granulation-lamination-lamination-molding-HPS-PIP. The invention combines the PIP process and the HPS process, uses aluminum sol as the impregnation solution, and uses high-performance fiber non-weft cloth as the reinforcing material, and the prepared composite material board has higher density, higher toughness and better bulletproof performance. Moreover, the requirements on equipment are reduced, and the preparation efficiency is improved.

Description

technical field [0001] The invention relates to a technique in the field of composite materials, in particular to a composite bulletproof plate and a preparation method thereof. Background technique [0002] With the rapid development of conventional weapons, the requirements for bulletproof materials are also getting higher and higher. As the most important part of the bulletproof plate, the performance of the ceramic material plate determines the protection level of the bulletproof plate. [0003] Ceramic material plates are generally prepared by hot-pressing sintering of silicon carbide powder or alumina powder. When this pure ceramic insert is impacted by a bullet, it is prone to stress concentration, resulting in catastrophic damage. It was also proposed to use three-dimensional braided fibers as reinforcement materials to prepare ceramic matrix composite panels. Although it has a toughening effect to a certain extent, the interlaced warp and weft yarns of the three-d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/10C04B35/626C04B35/622C04B35/63C04B35/645
CPCC04B35/10C04B35/62695C04B35/622C04B35/6303C04B35/645C04B2235/77C04B2235/96
Inventor 吴永龙朱堂龙余佳佳王宇湖
Owner 苏州柔陶新材料有限公司