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Preparation method of composite ceramic

A composite ceramic and ceramic technology, applied in the field of ceramics, can solve the problems of high brittleness and heavy structure, and achieve the effect of enhancing the bonding effect.

Pending Publication Date: 2020-01-03
BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of ceramics used alone are also obvious. Due to their high hardness and high brittleness, they are broken immediately after impact, and the protection ability against secondary or even multiple impacts drops sharply. Therefore, Chobham structure appeared in the 1960s and 1970s. Bulletproof armor is a sandwich structure that clamps ceramics between two metal plates, which effectively solves the contradiction between the brittleness of ceramics and the failure of adiabatic shearing and plugging of metal plates, but this structure is still very heavy.

Method used

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  • Preparation method of composite ceramic
  • Preparation method of composite ceramic
  • Preparation method of composite ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Take methanol and soft water with a mass ratio of 1:1 (industrial softened water obtained by ion exchange method, the hardness meets the GB1576-2008 "Industrial Boiler Water Quality" standard, less than 0.03mmol / L), add acetic acid to adjust the pH value = 5, select γ- Glycidyl ether oxypropyltrimethoxysilane coupling agent is prepared into a clear solution with a mass concentration of silane coupling agent of 0.5%; select a square aluminum oxide ceramic block with a side length of 50 mm, 6.5 mm thick, and put it into the above solution Soak in medium for 30 seconds and take out for use.

[0090] Use 0.2mm thick plain aramid fiber cloth fabric, first design the plain aramid fabric cutting drawing, according to figure 2 As shown in the design, the center of the cross-shaped plain aramid fiber fabric is a 50mm square, and the four branches are a rectangle of 50mm×56.5mm. The plain aramid fiber fabric is cut into the above shape on a computer-aided laser cutting machine. ...

Embodiment 2

[0098] Select a square boron carbide ceramic block with a thickness of 13 mm and a side length of 50 mm for pretreatment according to the method in Example 1 for use.

[0099] Use 0.2mm thick plain weave glass fiber cloth to encapsulate small ceramic pieces, first design the cutting drawing of plain weave glass fiber cloth, follow figure 2 As shown, the center of the cross-shaped plain glass fiber cloth is a 50mm square, and the four branches are a 50mm×63mm rectangle, and the glass fiber cloth is cut on a computer-aided laser cutting machine.

[0100] Use the above cut plain fiberglass cloth according to figure 2 As shown, the above-mentioned treated small ceramic block is wrapped to obtain an encapsulated small ceramic block.

[0101] Cut the appearance size of the armor and the thickness is 0.2mm Three pieces of glass fiber cloth, one of which is made of epoxy resin (An Debao brand HJ-3-1 epoxy resin product provided by Shanghai Huayi Resin Co., Ltd.) Hand-coated and bo...

Embodiment 3

[0107] The composite ceramics after the test in Example 2 is removed, and the boron carbide ceramic fritters with a thickness of 13mm are filled after cleaning up, and the replacement thickness of a new UHMWPE laminate is 20mm, such as Figure 5 Shown, then prepare composite ceramics according to the method in embodiment 2.

[0108] According to the "GA950-2011 Bulletproof Materials and Products V50 Test Method" standard, the Type 54 12.7mm armor-piercing incendiary bomb was used to test, and its V50 was 698.5m / s, which indicated that after the packaged ceramic plate was ballistically impacted, the impact point was removed. For damaged ceramics, the ceramics in other positions remain intact, with good performance, and have the value of secondary use.

[0109] As can be seen from the above examples, the present invention provides a method for preparing composite ceramics, comprising: bonding fiber cloth on the surface of the bulletproof backboard; bonding a plurality of package...

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Abstract

The invention provides a preparation method of a composite ceramic. The preparation method of the composite ceramic comprises the following steps that fiber cloth is bonded on the surface of a bulletproof back plate; a plurality of packaged ceramic small blocks are bonded on the surface of the fiber cloth; the fiber cloth is bonded on the surface of the plurality of packaged ceramic small blocks to form a ceramic plate; and the ceramic plate is cured to obtain the composite ceramic. The composite ceramic prepared by the method provided by the invention forms a new integral ceramic plate, and has the shock wave isolation effect, so that the anti-multiple attack ability is remarkably enhanced; the ceramic small blocks are bonded to one another, so that the overall bending strength is remarkably improved, the structural integrity and the bulletproof performance of the ceramic small blocks are not reduced under a long-term static load or dynamic load; and after impact, the damaged ceramicsmall blocks can be removed and replaced with the new ceramic small blocks in order to be used for multiple times and improve the use efficiency of the ceramic plate, and even in an emergency situation, the ceramic plate can be repaired. The invention further provides a composite ceramic.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a composite ceramic and a preparation method thereof. Background technique [0002] At present, most of the mainstream bulletproof armors are made of metal materials, and some non-metallic composite materials are also available. Metal bulletproof armor has been developed for decades, and the products are mature and cheap. They are generally high-strength and high-hardness average steel plates, aluminum alloy plates, or titanium alloy plates, but their weaknesses are also obvious, that is, high surface density. [0003] Regardless of personal protection or vehicle equipment protection, the primary task is to protect warheads or explosive fragments under ballistic impact. With the upgrading of weapons or the increase of ballistic threat level faced by customers, higher requirements are put forward for the protection ability of bulletproof armor. On the other hand, human body prot...

Claims

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Application Information

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IPC IPC(8): F41H5/04
CPCF41H5/04
Inventor 徐喜成黄兴良刘金良廖代均郭长明李国民
Owner BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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