A directional reinforcement fabric and method of forming same

Abstract

The application discloses a kind of directional reinforced puncture fabric and its forming method, comprising: step 1: according to the design of fabric directional reinforcement requirement, unit layer includes at least one fiber layer, and the unit layer formed by at least one fiber layer is distributed with fiber in multiple directions, and the volume content ratio of fiber distributed in multiple directions is not all same;Step 2: the fiber layer in the first layer unit layer is sequentially laid in the puncture device and puncture pressurization setting is carried out;Step 3: the fiber layer of remaining unit layer is sequentially carried out puncture pressurization setting according to step 2 until reaching predetermined height;Step 4: the position of puncture needle is replaced by Z direction fiber bundle one by one, and finally three-dimensional fabric is formed.The application utilizes the fiber type, fiber structure, organization structure and fiber layer combination design of fiber layer, realizes the limit promotion of fabric specified single or multiple direction fiber volume content or performance, forms directional reinforced puncture fabric to meet the requirement of material directional high performance.

Description

Technical Field

[0001] This invention relates to the field of needle-punched fabric technology, specifically to a directional reinforced puncture fabric and its forming method. Background Technology

[0002] Carbon / carbon composites are important ablation-resistant materials, with carbon fiber preforms acting as reinforcements that determine the key properties of the composites. Puncture-resistant fabrics, due to their high density, are widely used as reinforcements. As materials face increasingly harsh and extreme environments, there is a growing need for materials to achieve performance limits in specific directions. Traditional preform-reinforced structural materials are no longer sufficient to meet this requirement; therefore, materials with directional high performance have emerged. Oriented reinforced puncture-resistant fabrics combine the advantages of high puncture density and directional reinforcement, providing technical support for the preparation of materials for extreme environments.

[0003] Patent application CN201510998912.7, entitled "A Gradient Structure Puncture Fabric and Its Preparation Method," discloses a gradient structure puncture fabric and its preparation method. This method designs the Z-axis spacing based on the mechanical performance requirements of different parts of the composite material, creating differences in fiber volume content in different regions. This results in a gradient distribution of fiber volume content along a set direction in the molded fabric, with each gradient region integrally molded, thus achieving a gradient change in the composite material structure. However, the fiber volume content in different regions of the puncture fabric in the patent is distributed in a "U" shape, exhibiting a gradient change, but it cannot achieve directional reinforcement in the planar direction.

[0004] Application number 202023167467.5, entitled "A Carbon Fiber High-Density Puncture Preform," discloses a carbon fiber high-density puncture preform in which the width of the carbon fiber yarn bundles in the carbon fiber cloth is equal to the distance between the puncture needles. Although this patent also uses a widening technique to thin the carbon cloth, its purpose is to solve the problem of thickness design at the interlacing points of the puncture preform to increase the fabric density, but it fails to achieve directional reinforcement of fabric density and planar curvature preparation. Summary of the Invention

[0005] The purpose of this invention is to provide a directional reinforced puncture fabric and its forming method to achieve a specific increase in the volume content or performance of unidirectional or multidirectional fibers in the fabric.

[0006] To achieve the purpose of the appeal, the present invention provides the following technical solution:

[0007] A method for forming a directional reinforced puncture fabric, the method comprising the following steps:

[0008] Step 1: Design and prepare unit layers according to the directional reinforcement requirements of the fabric. The unit layer includes at least one fiber layer. The unit layer formed by the at least one fiber layer has fibers distributed in multiple directions, and the volume content ratio of the fibers distributed in multiple directions is not the same.

[0009] Step 2: Lay the fiber layers in the first unit layer sequentially in the puncture device and perform puncture, pressure, and shaping;

[0010] Step 3: Following Step 2, puncture and pressurize the remaining unit layer fiber layers sequentially until the predetermined height is reached;

[0011] Step 4: Use Z-axis fiber bundles to replace the position of the puncture needle one by one to form a binding on the fiber layer, and finally form a three-dimensional fabric.

[0012] Furthermore, at least one fiber layer in step 1 includes a unidirectional fiber layer and / or a multidirectional fiber layer, wherein the volume content ratio of fibers distributed in different directions in the multidirectional fiber layer is the same or different, and the fiber distribution directions of different unidirectional fiber layers are the same or different.

[0013] Furthermore, the puncture device in step 2 includes a placement mechanism, a puncture matrix, and a working platform. The working platform is used to support the puncture matrix. The surface formed by the needle tips of the puncture matrix is ​​consistent with the shape gradient of the fabric surface. The placement mechanism is capable of transferring the fiber layer onto the puncture matrix and includes a puncture template.

[0014] Further, step 2 specifically includes: sequentially grabbing the fiber layer through the placement mechanism and transferring the fiber layer to the top of the puncture matrix. After the placement is completed, the unit layer passes through the puncture matrix and is transferred to the forming area by applying pressure to the puncture template, and is then pressed and shaped.

[0015] Furthermore, the upper and lower surfaces of the fabric are curved or flat, and the lower surface of the puncture template is a curved or flat surface corresponding to the upper and lower surfaces of the fabric.

[0016] Furthermore, the unit layer comprises eight fiber layers, with fibers distributed in six directions: 0°, 30°, 60°, 90°, 120°, and 150°. The fiber volume content ratio in the six directions is: Vf 0° :Vf 30° :Vf 60° :Vf 90° :Vf 120° :Vf 150°= 1:3:1:1:1:3, the eight fiber layers include one triaxial fiber layer, one 90° unidirectional fiber layer, three 30° unidirectional fiber layers, and three 150° unidirectional fiber layers. The three directions of the triaxial fiber layer are 0°, 60°, and 120°, and the fiber volume content ratio of the three directions is: Vf 0° :Vf 60° :Vf 120° = 1:1:1; or the unit layer comprises two fiber layers with fibers distributed in two directions, namely the 0° direction and the 90° direction, and the fiber volume content ratio in the two directions is: Vf 0° :Vf 90° =5:1, the two fiber layers include two axial fiber layers and one unidirectional fiber layer, and the fiber distribution density of the two axial fiber layers in the 0° direction is four times that in the 90° direction.

[0017] Furthermore, the fiber volume content in the direction with the largest volume content among the fibers distributed in multiple directions reaches more than 20%.

[0018] Furthermore, the fiber layer is made of broadened fibers.

[0019] Furthermore, the structure of the fiber layer includes two-dimensional fabric, needle-punched felt, fiber bundle, and fiber rod. The two-dimensional fabric has a weave structure including plain weave, twill weave, unidirectional, triaxial, and variable density structures. The fiber layer is made of polyacrylonitrile-based carbon fiber, mesophase pitch-based carbon fiber, and silicon carbide fiber, and is prepared by mixing in a single yarn, weaving different yarns together, and combining different types of fiber layers.

[0020] A directional reinforced puncture fabric, wherein the directional reinforced puncture fabric is prepared by the method described above.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention designs and prepares unit layers according to the requirements of fabric orientation reinforcement. The unit layer is designed to include at least one fiber layer, such that the unit layer has fibers distributed in multiple directions, and the volume content ratio of the fibers distributed in multiple directions is not the same. The fiber layers are sequentially laid in a puncture device and punctured and pressure-set to form the unit layer. This process utilizes the fiber type, fiber structure, weave structure and fiber layer combination design of the fiber layer to achieve the ultimate improvement of fiber volume content or performance in a specified single or multiple directions of the fabric, thereby meeting the requirements of high-performance orientation of materials.

[0023] 2. The present invention employs a specially designed piercing device for a unique process method. The piercing device includes a placement mechanism, a working platform, and a piercing matrix. The placement mechanism can reciprocate between the working platform and the unit layer storage area to grasp, lay out, and pierce the unit layers. The clamping methods include, but are not limited to, pneumatic negative pressure and mechanical clamping. When the unit layers are pierced on the piercing matrix, they are staggered according to the interlayer gradient to improve the uniformity of the fabric. Attached Figure Description

[0024] Figure 1 This is a flowchart of the directional reinforcement puncture fabric and its forming method of the present invention.

[0025] Figure 2 This is a schematic diagram of a directional reinforced fabric with curved upper and lower surfaces.

[0026] Figure 3 This is a schematic diagram of a triaxially oriented distribution.

[0027] Figure 4 This is a schematic diagram of a unidirectional fabric.

[0028] Figure 5 This is a schematic diagram of the puncture device.

[0029] Figure 6 This is a schematic diagram of a directional reinforced fabric with planar upper and lower surfaces.

[0030] Figure 7 This is a schematic diagram of a unit layer with a fiber ratio of 5:1.

[0031] Figure 8 This is a schematic diagram of carbon cloth with variable structural density. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The present invention can be better understood from the following embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The present invention discloses a method for forming a directional reinforced puncture fabric, comprising the following steps:

[0034] Step 1: Design and prepare unit layers according to the directional reinforcement requirements of the fabric. The unit layer includes at least one fiber layer. The unit layer formed by the at least one fiber layer has fibers distributed in multiple directions, and the volume content ratio of the fibers distributed in multiple directions is not the same.

[0035] Step 2: Lay the fiber layers in the first unit layer sequentially in the puncture device and perform puncture, pressure, and shaping;

[0036] Step 3: Following Step 2, puncture and pressurize the remaining unit layer fiber layers sequentially until the predetermined height is reached;

[0037] Step 4: Use Z-axis fiber bundles to replace the position of the puncture needle one by one to form a binding on the fiber layer, and finally form a three-dimensional fabric.

[0038] The directional reinforced puncture fabric described in this invention refers to a fabric in which unit layers with directionally improved density or performance are stacked and punctured in a regular manner to achieve a specified increase in the unidirectional or multidirectional fiber volume content or performance enhancement, with the fiber volume content in the specified direction being higher than that in the other directions.

[0039] Specific implementation examples are given below.

[0040] Example 1:

[0041] The fabric in this embodiment is a curved-surface directional reinforced puncture fabric. Please refer to the structural schematic diagram. Figure 2 (This diagram is only for illustrative purposes; the number and shape of the internal fiber layers do not completely correspond to the example.) This fabric differs from traditional plate-shaped, uniformly punctured fabrics; it is a non-uniformly sized, curved-surface fabric. The fabric dimensions are 500mm × 500mm × 100mm, with the upper and lower ends being arc-shaped with an arc length of 10πcm, and the four sides being flat. This curved-surface oriented reinforced punctured fabric consists of fibers distributed in six directions on the curved surface and Z-direction fibers penetrating the curved surface, totaling seven fiber directions. The overall fiber volume content is 50%, of which 10% is Z-direction fiber and 40% is curved-surface fiber. The fabric achieves enhanced directional performance by increasing the fiber volume content in specific directions; specifically, the fiber volume content ratio in each direction within the curved surface is Vf. 0° :Vf 30° :Vf 60° :Vf 90° :Vf 120° :Vf 150° The fiber ratio is 1:3:1:1:1:3, meaning the fibers in the 30° and 150° directions are the reinforcing fibers, with the volume content of these two directions increased to 12% respectively. The volume content of fibers in the remaining planar directions is controlled at 4%, resulting in a total reinforcing fiber volume content of 24%. To ensure the uniform and stable forming of the oriented reinforced unequal density puncture fabric and reduce the difficulty of multi-orientation fiber distribution, ensuring the accuracy of laying carbon cloth on the curved surface, this curved surface oriented reinforced puncture fabric is designed with... Figure 3 The triaxial fabric shown (fiber distribution directions are 0°, 60° and 120°) Figure 4 The unidirectional fabric rotation angles shown (which can rotate the fiber distribution angle to the desired angle, such as 30°, 90°, and 150° in this embodiment) are combined to form unit layers, and then stacked sequentially to form the final product.

[0042] The preparation of the curved surface oriented reinforced puncture fabric is completed according to the following steps, the process is as follows: Figure 1 As shown:

[0043] (1) Design and prepare unit layers according to the directional reinforcement ratio, that is, produce various structural carbon fabrics that constitute the unit layers: using mesophase pitch fiber as raw material, the fiber is spread to 6mm, and weaves fabrics with a surface density of 210±10g / m² using a loom. 2 Triaxial carbon cloth, 70±5g / m 2 Unidirectional carbon cloth. And while ensuring that the carbon cloth is not tilted or twisted, it is cut into blocks of (510±10)mm×(510±10)mm in size, and stacked in the same direction for later use.

[0044] (2) Based on the unit layer size and shape, a height-gradient puncture matrix is ​​laid out on the workbench using multi-specification puncture needles: the Z-axis spacing of the matrix is ​​1.5mm, the top arc length is 10πcm, the size is (500±1.0)mm×(500±1.0)mm, and the volume of the puncture needles is 128164.

[0045] (3) According to the unit layer placement order (the stacking order of the unit layers during preparation is the opposite of the grabbing order), the carbon cloth is grabbed sequentially by the piercing mechanism.

[0046] (4) Transfer the carbon cloth and place it precisely on top of the puncture matrix: the laying order is 1 layer of triaxial carbon cloth, 1 layer of 90° unidirectional cloth, 3 layers of 30° unidirectional cloth, 3 layers of 150° unidirectional cloth, a total of 8 layers of carbon cloth to form a unit layer containing fibers in 6 directions.

[0047] (5) Unit layer overall puncture: In order to ensure the stability of the arc-shaped fabric forming, the unit layer is inserted into the puncture matrix by using an arc-shaped puncture template and then pressure is applied to make the unit layer bend and shape according to the arc surface of the template.

[0048] (6) Repeat steps 3 to 5 until the fabric height reaches 100mm.

[0049] (7) Replace the puncture needle and introduce Z-axis fibers: Use T300-3K carbon fiber bundles with a length of 105mm to replace the position of the puncture needle one by one, forming a binding on the planar fiber layer, and finally forming a three-dimensional fabric.

[0050] In this embodiment, based on the preparation method of the arc-shaped directional reinforced puncture fabric in steps 1 to 7, the method employs, as follows: Figure 5The puncture device shown is fabricated and formed. It mainly includes a placement mechanism 1, a puncture matrix 3, and a working platform 4. The working platform 4 supports the puncture matrix 3 and fixes it to its root, maintaining the overall stability of the puncture matrix 3. The arrangement of the puncture matrix 3 maintains the gradient of the upper needle tip plane with the curved surface of the fabric, improving the uniformity during puncture. The placement mechanism 1 has multiple degrees of freedom in spatial movement. In this embodiment, carbon cloth 2 is grasped from the feeding area by a vacuum suction cup, and transferred to the steel needle matrix 3 in a state of low damage and no deformation. The vacuum cup is then released, and the carbon cloth 2 is laid on the puncture matrix 3, completing the feeding of the carbon cloth 2. The placement mechanism 1 includes an arc-shaped puncture template, whose contact surface with the fabric has the same shape as the fabric and has holes arranged in the same manner as the puncture matrix 3. After laying, pressure is applied to the arc-shaped puncture template to allow the unit layer 2 to pass through the puncture matrix 3, be transferred to the forming area, and be pressure-set.

[0051] Example 2:

[0052] In this embodiment, please refer to a planar directional reinforcement puncture fabric. Figure 6 (This diagram is only for illustrative purposes; the number and shape of the internal fiber layers do not completely correspond to the example.) This fabric differs from traditional uniform density puncture fabrics; it is a non-uniform density fabric. The fabric dimensions are 2000mm × 500mm × 300mm, with all six sides being planar. This flat, oriented reinforced puncture fabric consists of fibers distributed in two directions on the plane and a Z-direction fiber penetrating the plane, totaling three fiber directions. The overall fiber volume content is 50%, of which 1.4% is Z-direction fiber and 48.6% is planar fiber. The fabric achieves enhanced directional performance by increasing the fiber volume content in specific directions; specifically, the fiber volume content ratio in each direction on the plane is Vf. 0° :Vf 90° =5:1, meaning the fiber volume content in the 0° and 90° directions is increased to 40.5% and 8.1% respectively, with the 90° fiber serving as the reinforcing fiber. To ensure the uniform and stable forming of the oriented reinforced unequal-density puncture fabric, this flat oriented reinforced puncture fabric is designed with... Figure 7 The unit layers shown are stacked sequentially to form the shape.

[0053] The flat-plate directional reinforced puncture fabric was prepared according to the following steps, the process is as follows: Figure 1 As shown:

[0054] (1) Design and prepare unit layers according to the directional reinforcement ratio, i.e., produce various structural carbon fabrics that constitute the unit layers: 1K mesophase pitch fibers are spread to 4.2mm as warp yarns and to 5.0mm as weft yarns, and woven into carbon fabric with a plain weave structure of 24 warp threads / 10cm and 6 weft threads / 10cm, i.e., variable density structural carbon fabric. The carbon fabric contains fibers in both warp and weft directions, with a fiber volume ratio of 4:1, and the structure is as follows: Figure 8 As shown. And while ensuring that the carbon cloth is not tilted or twisted, cut it into blocks of (2010±10)mm×(510±10)mm, and stack them in the same direction for later use.

[0055] (2) Based on the unit layer size and shape, a puncture matrix is ​​set up on the workbench using puncture needles: the Z-axis spacing of the matrix is ​​5.0 mm, the size is (2001±1.0) mm × (501±1.0) mm, and the volume of the puncture needles is 40501.

[0056] (3) According to the order of carbon cloth placement, the piercing mechanism grabs one piece at a time.

[0057] (4) Transfer the carbon cloth and place it precisely on top of the puncture matrix, with the carbon cloth positioned in the 0° direction of the puncture matrix. Then, lay a layer of mesophase pitch fiber with a width of 4 mm in the 0° channel of the matrix, and combine it with the variable structure carbon cloth to form a unit layer with a fiber ratio of 5:1.

[0058] (5) Unit layer overall puncture: In order to ensure the stability of the forming of fabrics with different densities, pressure plates are formed by using independent shaping tools, which are cross-distributed in the puncture needles. The unit layer is inserted into the puncture matrix and then pressure is applied in both directions to make the unit layer shape according to the plane of the template.

[0059] (6) Repeat steps 3 to 5 until the fabric height reaches 300mm.

[0060] (7) Replace the puncture needle and introduce Z-axis fibers: Use T300-3K carbon fiber bundles with a length of 305mm to replace the position of the puncture needle one by one, forming a binding on the planar fiber layer, and finally forming a three-dimensional fabric.

[0061] In this embodiment, based on the method for preparing a flat, directionally reinforced puncture fabric according to steps 1-7, the method employs, as follows: Figure 5The piercing device shown is fabricated and formed. It mainly includes a placement mechanism 1, a piercing matrix 3, and a working platform 4. The working platform 4 supports the piercing matrix 3 and is fixed to its root, maintaining the overall stability of the piercing matrix 3. The placement mechanism 1 has multiple degrees of freedom in spatial movement. In this embodiment, carbon cloth 2 is picked up from the feeding area by a vacuum suction cup, and transferred to the steel needle matrix 3 in a state of low damage and no deformation. The vacuum suction cup is then released, and the carbon cloth 2 is laid on the piercing matrix 3, completing the feeding of the carbon cloth 2. The placement mechanism 1 includes multiple sets of pressure plates with shaped tooling combinations, arranged crosswise within the piercing matrix 3. After laying, pressure is applied to the pressure plates to achieve unit layer piercing into the piercing matrix 3, transferring the material to the forming area, and then pressing and shaping it.

[0062] Preferably, the fiber layer is made of broadened fibers, which can increase the straightness of the fibers to enhance the fabric density. This is achieved by adjusting one or a combination of the fiber broadening width and the warp and weft density. The number and position of the interlacing points of the fibers within the fabric are adjustable and controllable, allowing for differentiation in fiber volume content while also controlling the fabric surface flatness, thereby ensuring uniform internal pores after the puncture fabric is formed.

[0063] Preferably, the oriented high-density unit layer is formed by combining and arranging one or more fiber layers with different structures. The structure of the fiber layer includes two-dimensional fabric, needle-punched felt, fiber bundle, and fiber rod. The two-dimensional fabric has a structure including plain weave, twill weave, unidirectional, triaxial, and variable density structures. The fiber layer is made of polyacrylonitrile-based carbon fiber, mesophase pitch-based carbon fiber, and silicon carbide fiber, and is prepared by mixing in a single yarn, weaving different yarns together, and combining different types of fiber layers.

[0064] Preferably, the upper and lower end faces of the piercing fabric can be rectangular, circular, trapezoidal, polygonal, parallelogram, etc.

[0065] The fiber volume content in a specified direction of the preform structure involved in this invention can be designed according to the application requirements, thereby meeting the application requirements of composite materials for high performance in a specific direction.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for forming a directional reinforced puncture fabric, characterized in that, The method includes the following steps: Step 1: Design and prepare unit layers according to the directional reinforcement requirements of the fabric. The unit layer includes at least one fiber layer. The unit layer formed by the at least one fiber layer has fibers distributed in multiple directions, and the volume content ratio of the fibers distributed in multiple directions is not the same. Step 2: Lay the fiber layers in the first unit layer sequentially in the puncture device and perform puncture, pressure, and shaping; Step 3: Following Step 2, puncture and pressurize the remaining unit layer fiber layers sequentially until the predetermined height is reached; Step 4: Use Z-axis fiber bundles to replace the position of the puncture needle one by one to form a binding on the fiber layer, and finally form a three-dimensional fabric.

2. The method for forming a directional reinforced puncture fabric according to claim 1, characterized in that, The at least one fiber layer in step 1 includes a unidirectional fiber layer and / or a multidirectional fiber layer. The volume content ratio of fibers distributed in different directions in the multidirectional fiber layer is the same or different, and the fiber distribution directions of different unidirectional fiber layers are the same or different.

3. The method for forming a directional reinforced puncture fabric according to claim 1 or 2, characterized in that, The puncture device in step 2 includes a placement mechanism (1), a puncture matrix (3), and a working platform (4). The working platform (4) is used to support the puncture matrix (3). The surface formed by the needle tip of the puncture matrix (3) is consistent with the shape gradient of the fabric surface. The placement mechanism (1) can transfer the fiber layer onto the puncture matrix (3). The placement mechanism (1) includes a puncture template.

4. The method for forming a directional reinforced puncture fabric according to claim 3, characterized in that, Step 2 specifically includes: sequentially grabbing the fiber layer through the placement mechanism (1) and transferring the fiber layer to the top of the puncture matrix (3). After the laying is completed, the unit layer passes through the puncture matrix (3) by applying pressure to the puncture template, is transferred to the forming area, and is then pressed and shaped.

5. The method for forming a directional reinforced puncture fabric according to claim 4, characterized in that, The upper and lower surfaces of the fabric are curved or flat, and the lower surface of the puncture template is a curved or flat surface corresponding to the upper and lower surfaces of the fabric.

6. The method for forming a directionally reinforced puncture fabric according to claim 4, characterized in that, The unit layer comprises eight fiber layers, with fibers distributed in six directions: 0°, 30°, 60°, 90°, 120°, and 150°. The fiber volume content ratio in the six directions is: Vf 0° :Vf 30° :Vf 60° :Vf 90° :Vf 120° :Vf 150° = 1:3:1:1:1:3, the eight fiber layers include one triaxial fiber layer, one 90° unidirectional fiber layer, three 30° unidirectional fiber layers, and three 150° unidirectional fiber layers. The three directions of the triaxial fiber layer are 0°, 60°, and 120°, and the fiber volume content ratio of the three directions is: Vf 0° :Vf 60° :Vf 120° = 1:1:1; or the unit layer comprises two fiber layers with fibers distributed in two directions, namely the 0° direction and the 90° direction, and the fiber volume content ratio in the two directions is: Vf 0° :Vf 90° =5:1, the two fiber layers include two axial fiber layers and one unidirectional fiber layer, and the fiber distribution density of the two axial fiber layers in the 0° direction is four times that in the 90° direction.

7. The method for forming a directional reinforced puncture fabric according to claim 4, characterized in that, The fiber volume content in the direction with the largest volume content among the fibers distributed in multiple directions reaches more than 20%.

8. The method for forming a directionally reinforced puncture fabric according to any one of claims 4-7, characterized in that, The fiber layer is made of spread fibers.

9. The method for forming a directionally reinforced puncture fabric according to any one of claims 4-7, characterized in that, The structure of the fiber layer includes two-dimensional fabric, needle-punched felt, fiber bundle, and fiber rod. The two-dimensional fabric has a weave structure including plain weave, twill weave, unidirectional, triaxial, and variable density structures. The fiber layer is made of polyacrylonitrile-based carbon fiber, mesophase pitch-based carbon fiber, and silicon carbide fiber, and is prepared by mixing in a single yarn, weaving different yarns together, and combining different types of fiber layers.

10. A directionally reinforced puncture fabric, characterized in that, The directional reinforced puncture fabric is prepared using the method described in any one of claims 1-9.

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