Fully-amorphous functional layer and protection structure applying fully-amorphous functional layer

Abstract

The utility model discloses a full amorphous state functional layer which is characterized by comprising a plurality of layers of paved amorphous alloy strips, and the amorphous alloy strips are bonded through adhesive films. The preparation of the single-layer material of the fully amorphous functional layer is simpler and more convenient, and the multi-layer structure facilitates the accurate control of the overall thickness, and shows high material adaptability and process flexibility. The utility model further discloses a protection structure which is characterized by sequentially comprising a ceramic layer, the full-amorphous functional layer, a rigid supporting metal layer and a three-proofing lining layer from outside to inside, all the layers are bonded through adhesive films, and the density of the amorphous alloy strip of the full-amorphous functional layer is sequentially increased from outside to inside. According to the protection structure, under the condition that an original main body protection structure is not damaged, the protection efficiency of the original protection structure is enhanced or the protection threat level is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of armor protection, in particular to a full amorphous functional layer and a protection structure using the full amorphous functional layer. Background Art

[0002] In the interaction between projectiles and targets, shock wave loading and high strain rate loading are often highly coupled. As a protective structure, how to achieve efficient and lightweight protection against incoming projectiles has always troubled scientific research and engineering technicians. In the face of the damage caused by space hypervelocity debris impacts to space stations, the fragment shock wave loading has a significant effect. The shock wave energy dissipation mostly adopts protective structures such as Whipple, which achieve effective protection against fragments through the first layer or the first and second layers of protective materials; in the face of the damage caused by modern armor-piercing and armor-piercing projectiles to tanks and armored vehicles, the (ultra) high strain rate loading of the projectile has a significant effect. At present, composite armor or reactive armor structures are mostly used for effective protection; and in the face of the threat of lethal fragments and traditional bullets, individual soldiers or police equipment mostly use composite bulletproof inserts to protect themselves.

[0003] The commonly used composite structures of tank armored vehicles or bulletproof inserts are mostly composed of high-hardness bulletproof ceramics, rigid support metal plates and back-side anti-collapse (or three-proof) linings. The core design idea of ​​this composite protective structure is to use high-hardness surface ceramic materials to destroy the integrity of the projectile and the metal back plate to provide rigid support (refer to the Chinese invention application "A composite armor plate resistant to armor-piercing incendiary bomb penetration and its preparation method" with application number 202210412264.2) to achieve the purpose of effective protection, and it has been widely used in weapon equipment protection systems at home and abroad. However, in these engineering applications, there is always the problem of attenuation of the initial shock wave loading effect of the projectile hitting the target at high speed. The Chinese utility model patent "A composite bulletproof structure" with application number 202220694368.2 and the Chinese invention patent application "A functional gradient armor structure resistant to 14.5mm armor-piercing projectiles" with application number 202310515246.1 proposed to achieve shock wave attenuation by means of wave impedance mismatch and other methods. Amorphous alloys have attracted much attention for their perfect elastic properties and intrinsic properties similar to those of metal materials in terms of shock wave attenuation in armor protection technology. Utility Model Content

[0004] The technical problem to be solved by the utility model is to propose a perfect elastic all-amorphous functional layer and a protective structure using the all-amorphous functional layer in view of the above technical status quo.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a fully amorphous functional layer, characterized in that it includes multiple layers of paved amorphous alloy strips, and each layer of the amorphous alloy strips is bonded by an adhesive film.

[0006] Preferably, the adhesive film is epoxy or phenolic. Resin-based materials such as epoxy or phenolic have good energy absorption properties and can absorb a large amount of kinetic energy during the projectile penetration process and dissipate energy through elastic deformation, plastic deformation or even rupture.

[0007] Preferably, the thickness of each layer of the amorphous alloy strip is controlled to be less than 0.6 mm. The thickness of a single layer is controlled to be about 0.5 mm or thinner to ensure that the amorphous functional layer is a "full amorphous" alloy material, so as to better exert the perfect elastic properties of the amorphous alloy.

[0008] Preferably, the number of paving layers of the amorphous alloy strip is an odd number and is not less than 3 layers.

[0009] Furthermore, the density of the amorphous alloy strip increases layer by layer, and the step length of the density increase is not less than 1g / cm 3 The thickness gradient directional density design of the structure can realize the re-release of stored energy, and there is no limit on the number of paving layers.

[0010] Preferably, the angle between the laying direction of any layer of the amorphous alloy strip and the laying direction of its adjacent layer is 90°.

[0011] In order to achieve thickness gradient growth, specifically, the number of paving layers of the amorphous alloy strip is 5, which are aluminum-based amorphous alloy strip, titanium-based amorphous alloy strip, zirconium-based amorphous alloy strip, copper-based amorphous alloy strip and hafnium-based amorphous alloy strip.

[0012] The utility model also discloses a protective structure, characterized in that it includes a ceramic layer, the above-mentioned fully amorphous functional layer, a rigid support metal layer and a triple-protective lining layer from the outside to the inside, and the layers are bonded by adhesive films. The density of the amorphous alloy strip of the fully amorphous functional layer increases from the outside to the inside.

[0013] Furthermore, the protective structure of the utility model also includes a crack-stopping layer, and the crack-stopping layer is bonded to the outer side of the ceramic layer through an adhesive film.

[0014] Compared with the prior art, the fully amorphous functional layer of the utility model is composed of multiple layers of amorphous alloy strips, which are suitable for shock wave energy storage. Its structure allows great freedom in the selection of laying direction, sequence and thickness, simplifies the operation process, and avoids the complexity of traditional weaving technology. In addition, there is no specific restriction on the width of the amorphous alloy strip, which makes the preparation of a single layer of material easier, and the multi-layer structure facilitates precise control of the overall thickness, showing a high degree of material adaptability and process flexibility.

[0015] The protective structure of the utility model has a fully amorphous functional layer. Without destroying the original main body protective structure, the fully amorphous functional layer is inserted into the front side of its rigid support layer, thereby strengthening the protective effectiveness of the original protective structure or further improving the protection threat level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of laying out the fully amorphous functional layer of the utility model;

[0017] Figure 2 A schematic diagram of inserting the fully amorphous functional layer of the utility model into an existing protective structure;

[0018] Figure 3 It is a schematic diagram of the protective structure of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3 As shown, it is a preferred embodiment of a fully amorphous functional layer and a protective structure using the fully amorphous functional layer of the utility model.

[0021] The lightweight composite armor structure mainly for defending against threats of high-hardness and high-momentum projectiles such as small- and medium-caliber armor-piercing incendiary bombs includes, from the outer layer to the inner layer, a ceramic layer 1, a rigid supporting metal layer 2 and a triple-defense lining 3, and the layers are bonded by an adhesive film 6.

[0022] The protective structure of this embodiment is based on the lightweight composite armor structure. Without destroying the original main protective structure, a fully amorphous functional layer 4 is inserted between the ceramic layer 1 and the rigid supporting metal layer 2, thereby strengthening the protective performance of the original protective structure or further improving the protective threat level. Figure 1 and Figure 2 Furthermore, the protective structure further comprises a crack-stopping layer 5 , which is bonded to the outer side of the ceramic layer 1 through an adhesive film 6 .

[0023] The above-mentioned fully amorphous functional layer 4 includes multiple layers of laminated amorphous alloy strips, and each layer of amorphous alloy strip is bonded by an adhesive film 6. The adhesive film 6 is preferably a resin-based material such as epoxy-based or phenolic-based material. This type of material has good energy absorption characteristics and can absorb a large amount of kinetic energy during the penetration of the projectile, dissipating energy through elastic deformation, plastic deformation or even rupture.

[0024] The number of laminated layers of the amorphous alloy strip is preferably an odd number and not less than 3 layers. The density of the amorphous alloy strip increases layer by layer, and the step size of the density increase is not less than 1 g / cm 3 . The density design in the thickness gradient direction of this structure can realize the re-release of stored energy, and there is no limit to the number of laminated layers.

[0025] Controlling the thickness of a single layer of amorphous alloy strip to be about 0.5 mm or thinner can ensure that the amorphous functional layer is a "fully amorphous" alloy material, so as to better exert the perfect elastic properties of the amorphous alloy.

[0026] In this embodiment, the total thickness of the fully amorphous functional layer 4 is about 3 mm, which is composed of 5 layers of independent amorphous alloy strips laminated together. Each layer of amorphous alloy strip is bonded by an adhesive film 6, as Figure 1 shown. These 5 layers of amorphous alloy strips are, from the inside out: the first layer of aluminum-based amorphous alloy strip 45, with the same length and width as the composite protection structure, and the thickness is about 0.5 mm; the second layer of titanium-based amorphous alloy strip 44, with the same length and width as the composite protection structure, and the thickness is about 0.5 mm; the third layer of zirconium-based amorphous alloy strip 43, with the same length and width as the composite protection structure, and the thickness is about 0.5 mm; the fourth layer of copper-based amorphous alloy strip 42, with the same length and width as the composite protection structure, and the thickness is about 0.5 mm; the fifth layer of hafnium-based amorphous alloy strip 41, with the same length and width as the composite protection structure, and the thickness is about 0.5 mm. By arranging the amorphous alloy strips with different metal bases in this way, the density of the fully amorphous functional layer 4 can be increased in a gradient from the outside to the inside. The laying direction of the next layer of amorphous alloy strip is horizontally rotated 90° compared with the previous layer, so that the laying direction of any layer of amorphous alloy strip forms an angle of 90° with the laying direction of its adjacent layer.

[0027] The fully amorphous functional layer 4 of this embodiment is composed of multiple layers of laminated amorphous alloy strips, which is suitable for shock wave energy storage. Its structure gives great freedom in the laying direction, sequence and thickness selection, simplifies the operation process, and avoids the complexity of traditional weaving processes. Moreover, there is no specific limit on the width of the amorphous alloy strip, the preparation of single-layer materials becomes more convenient, and the multi-layer structure is convenient for accurately controlling the overall thickness, showing high material adaptability and process flexibility.

Claims

1. A fully amorphous functional layer, characterized in that: It comprises multiple layers of amorphous alloy strips, each layer of the amorphous alloy strips being bonded to each other by means of an adhesive film (6); the number of the amorphous alloy strips laid is 5, which are, in order, an aluminum-based amorphous alloy strip (45), a titanium-based amorphous alloy strip (44), a zirconium-based amorphous alloy strip (43), a copper-based amorphous alloy strip (42) and a hafnium-based amorphous alloy strip (41).

2. The fully amorphous functional layer according to claim 1, characterized in that: The adhesive film (6) is epoxy-based or phenolic-based.

3. The fully amorphous functional layer according to claim 2, characterized in that: The thickness of each layer of the amorphous alloy strip is controlled to be less than 0.6 mm.

4. The fully amorphous functional layer according to claim 3, characterized in that: The number of paving layers of the amorphous alloy strip is an odd number and is not less than 3 layers.

5. The fully amorphous functional layer according to claim 4, characterized in that: The density of the amorphous alloy strip increases layer by layer, and the step length of the density increase is not less than 1g / cm 3 .

6. The fully amorphous functional layer according to claim 5, characterized in that: The angle between the laying direction of any layer of the amorphous alloy strip and the laying direction of its adjacent layer is 90°.

7. A protective structure, characterized in that: From the outside to the inside, it includes a ceramic layer (1), a fully amorphous functional layer (4) as described in any one of claims 1 to 6, a rigid support metal layer (2) and a triple-proof lining (3), and each layer is bonded by an adhesive film (6). The density of the amorphous alloy strip of the fully amorphous functional layer (4) increases from the outside to the inside.

8. The protective structure according to claim 7, characterized in that: It also comprises a crack-stopping layer (5), wherein the crack-stopping layer (5) is bonded to the outer side of the ceramic layer (1) via an adhesive film (6).

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