Contoured three-dimensional fabric

Abstract

The present invention provides a profiling three-dimensional fabric, comprising an X-Y plane profiling unit layer and a Z-direction fiber bundle penetrating the X-Y plane profiling unit layer, wherein the X-Y plane profiling unit layer comprises at least one continuous fiber profiling layer and a plurality of fiber mesh felt layers, and the multiple X-Y plane profiling unit layers are stacked in the Z direction. By providing at least one continuous fiber profiling layer on the X-Y plane profiling unit layer, the profiling continuity of the plane fibers of the final profiling three-dimensional fabric is good, and the laying mode and angle of the continuous fibers can be designed more strongly; at the same time, by penetrating the Z-direction fiber bundle, the X-Y plane profiling unit layers of adjacent layers are connected and fixed to each other.

Description

Technical Field

[0001] The invention relates to the technical field of composite materials, in particular to a contoured three-dimensional fabric. Background Art

[0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. No description herein is admitted to be prior art by inclusion in this section.

[0003] New aircraft are making long-term hypersonic flights in near-space. In order to improve their flight speed and performance / functions, they are developing in the direction of lightweight and high performance. Their structural shape is changing from axisymmetric to aerodynamic profiled cross-sections. The structure and performance of composite materials are highly designable, which meets the development requirements of new aircraft. Therefore, their load-bearing components, such as load-bearing frames, rudders, ventral fins, side panels and other special-shaped components, are gradually changing from metal materials to all-composite materials using fiber preforms as reinforced skeletons. However, the surface of such components is complex, and existing fiber prefabrication is difficult to meet the high requirements of both lightweight and better high-temperature mechanical properties.

[0004] Existing reports on special-section fiber preforms disclose three-dimensional fabrics with variable or special-sections formed by three-dimensional weaving. Such fabrics are formed into variable sections by moving, increasing, decreasing, and segmenting the weaving yarns, or are formed by interweaving in the length direction of the special-section. Once post-processed, short fibers will be formed, resulting in a reduction in the content of continuous fibers in the special-section, making it difficult to meet the continuous fiber contour reinforcement requirements. The existing 2.5D process cannot form a hollow airfoil-containing load-bearing frame fabric as a whole. In addition, the common three-dimensional fabric with Z-direction continuous fibers connecting the flat woven fabric ply adopts a flat woven fabric contoured ply with 0° and 90° fibers interwoven. The 0° and 90° fibers are often disconnected at the splicing of the special-section or at the edge of the contour, and the continuous fiber content in the plane is low, which cannot meet the high requirements for the mechanical properties of the load-bearing components under high temperature environments. Summary of the invention

[0005] In view of the above, it is necessary to provide a contoured three-dimensional fabric that can meet the needs of continuous fiber contour reinforcement.

[0006] The technical solution provided by the present invention is:

[0007] A contoured three-dimensional fabric comprises an XY plane contoured unit layer and a Z-direction fiber bundle penetrating the XY plane contoured unit layer. The XY plane contoured unit layer comprises at least one continuous fiber contoured layer and a plurality of fiber mesh felt layers. A plurality of XY plane contoured unit layers are Z-direction stacked.

[0008] Preferably, the continuous fiber profiling layer of the profiling three-dimensional fabric is composed of continuous fibers on the same plane surrounding the outline and interior of the profiling three-dimensional fabric to form a continuous fiber profiling layer, and the dominant continuous fibers in each layer of the continuous fiber profiling layer are circumferentially arranged or centrally arranged. The circumferential arrangement means that the continuous fibers coincide with the outline of the profiling three-dimensional fabric and / or are arranged side by side, and the central arrangement means that the continuous fibers are arranged between the outline of the profiling three-dimensional fabric toward the center of the profiling three-dimensional fabric.

[0009] Preferably, the dominant continuous fibers in each of the continuous fiber contoured layers are evenly distributed.

[0010] Preferably, the contoured three-dimensional fabric plane includes a frame body and side wings extending outward from the frame body, and the circumferentially arranged dominant continuous fibers extend from the frame body to the ends of the side wings.

[0011] Preferably, the width of the flank is greater than the width of the frame, and the circumferentially arranged continuous fiber profiling layer also includes a middle area of ​​the thickened flank, and the thickened portion is arranged between the circumferentially arranged dominant continuous fibers and extends side by side with them to the end of the flank. The middle area of ​​the thickened flank is between the circumferentially arranged dominant continuous fibers and extends side by side with them to the end of the flank, or the circumferentially arranged dominant continuous fibers are closed one by one from the inside to the outside at the end of the flank, and the middle area of ​​the thickened flank is surrounded inside it and is profilingly arranged side by side.

[0012] Preferably, in the width direction of the side wing, the middle area of ​​the thickened portion side wing is centrally arranged.

[0013] Preferably, the interlayers of the XY plane profiling unit layers include interlayer short fibers introduced from the fiber mesh felt. The interlayers of the plane profiling unit layers include interlayer short fibers introduced from the fiber mesh felt.

[0014] Preferably, the Z-direction fiber bundle array is vertically arranged on the XY plane profiling unit layer; and the spacing between adjacent Z-direction fiber bundles on the XY plane profiling unit layer is 2.0-4.0 mm; the continuous fiber profiling layer and the Z-direction fiber bundles account for 80-95% of the overall mass.

[0015] Preferably, the interlayer density of the XY plane profiling unit layer is 10-30 layers / cm; the volume density of the profiling three-dimensional fabric is 0.70-1.00 g / cm 3 .

[0016] Preferably, the fibers in the contoured three-dimensional fabric include at least one of carbon fibers, graphite fibers or silicon carbide fibers.

[0017] Compared with the prior art, the present invention provides a profiling three-dimensional fabric, comprising an XY plane profiling unit layer and a Z-direction fiber bundle penetrating the XY plane profiling unit layer, wherein the XY plane profiling unit layer comprises at least one continuous fiber profiling layer and a plurality of fiber mesh felt layers, and the plurality of XY plane profiling unit layers are arranged in a Z-direction stacked manner. By arranging at least one continuous fiber profiling layer on the XY plane profiling unit layer, the profiling continuity of the plane fibers of the finally formed profiling three-dimensional fabric is good, ensuring that the structure of the profiling three-dimensional fabric formed by the continuous fiber profiling can be enhanced, and the laying mode and angle of the continuous fibers can be designed more strongly; at the same time, by the penetrating arrangement of the Z-direction fiber bundle, the XY plane profiling unit layers of adjacent layers are connected and fixed to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 Schematic diagram of the structure of a contoured three-dimensional fabric according to one embodiment of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the XY plane profiling unit layer stacking is shown.

[0021] Figure 3 yes Figure 2 A schematic structural diagram of an XY plane profiling unit layer in one embodiment.

[0022] Figure 4 Schematic diagram of the structure of a continuous fiber profiling layer arranged in a circumferential direction in one embodiment of the present invention.

[0023] Figure 5 It is a schematic structural diagram of a continuous fiber profiling layer arranged in a circumferential direction in another embodiment of the present invention.

[0024] Figure 6 It is a schematic structural diagram of a continuous fiber profiling layer arranged in a circumferential direction in another embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the structure of a continuous fiber profiling layer arranged toward the center in one embodiment of the present invention.

[0026] Description of reference numerals:

[0027] Contoured three-dimensional fabric 1 XY plane profiling unit layer 11 Z-direction fiber bundles 12 Continuous fiber contour layer 13 Frame area 131 Wing Middle Zone 133 Fiber mesh felt layer 14 Interlayer short fiber 141 Frame 3 flank 4

[0028] The following specific implementation manner will further illustrate the embodiments of the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the embodiments of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation methods and are not intended to limit the embodiments of the present invention.

[0032] A three-dimensional fabric 1, see Figure 1 and Figure 2 The profiling three-dimensional fabric 1 includes a plurality of XY plane profiling unit layers 11 and a Z-direction fiber bundle 12 arranged through the XY plane profiling unit layers 11, wherein the XY plane profiling unit layers 11 include at least one continuous fiber profiling layer 13 and a plurality of fiber network layers 14, and the plurality of XY plane profiling unit layers 11 are stacked in the Z direction to form the profiling three-dimensional fabric 1. By setting at least one continuous fiber profiling layer 13 on the XY plane profiling unit layer 11, the profiling continuity of the plane fibers of the finally formed profiling three-dimensional fabric 1 is good, and the laying mode and angle of the continuous fibers can be designed more strongly; at the same time, by the penetrating setting of the Z-direction fiber bundle 12, the XY plane profiling unit layers 11 of adjacent layers are connected and fixed to each other.

[0033] In some embodiments, see Figure 1 The contoured three-dimensional fabric 1 includes a frame 3 and side wings 4 extending outward from the frame 3, wherein the side wings 4 can be arranged on any side of the frame 3, or on both sides of opposite sides; and in some embodiments, the fibers forming the contoured three-dimensional fabric 1 include at least one of carbon fiber, graphite fiber or silicon carbide fiber.

[0034] The XY plane profiling unit layer 11 is supported by at least one layer of continuous fiber profiling layer 13 in the XY plane. Figure 4 , Figure 5 , Figure 6 and Figure 7, continuous fibers on the same plane in the contoured three-dimensional fabric 1 are formed around the contour and interior of the contoured three-dimensional fabric 1; in some embodiments, the continuous contoured fiber layer is composed of continuous fibers arranged around the frame 3 and the side wings 4 outside the frame 3; in other embodiments, the dominant continuous fibers in each layer of the continuous fiber contoured layer 13 are circumferentially arranged or centrally arranged, wherein the dominant continuous fibers in the circumferentially arranged continuous fiber contoured layer 13 extend from the frame 3 to the end of the side wing 4; the centrally arranged continuous fibers are arranged between the contour of the contoured three-dimensional fabric 1 toward the center of the contoured three-dimensional fabric 1.

[0035] In some embodiments, see Figure 4 , Figure 5 and Figure 6 , the dominant continuous fibers in each layer of continuous fiber profiling layer 13 are evenly distributed, wherein the continuous fibers in the continuous fiber profiling layer 13 are arranged circumferentially so as to coincide with and / or be arranged side by side with the contour of the profiling three-dimensional fabric 1. In some embodiments, the portion surrounding the frame 3 is a frame area 131 of the continuous fiber profiling unit layer 13, and the frame area 131 is the main part of the continuous profiling unit layer 13, which is used to support and surround the periphery of the frame 3.

[0036] See also Figure 4 and Figure 5 In some embodiments, the circumferentially arranged continuous fiber contouring layer 13 further includes a wing middle region 133 located on the wing 4, the wing middle region 133 is arranged inside the frame region 131 and extends side by side with the continuous fibers of the frame region 131 to the end of the wing 4. Figure 6 In other embodiments, the side wing middle area 133 is arranged between the continuous fibers arranged in the circumferential direction, wherein the continuous fibers arranged in the circumferential direction are closed one by one from the outside to the inside or from the inside to the outside at the end of the side wing 4, and the side wing middle area 133 is surrounded therein and arranged side by side in a profiling manner. In some embodiments, in order to facilitate the combination of the side wing middle area 133 and the frame area 131 to form the continuous fiber profiling layer 13, the side wing middle area 133 is arranged in the center in the width direction of the side wing 4.

[0037] During the lamination process, it is necessary to ensure that the layers within the XY plane profiling unit layer 11 are fixed to each other. In some embodiments, refer to Figure 3 The XY plane profiling unit layer 11 includes interlayer short fibers 141 introduced from the fiber mesh felt layer 14. The interlayer short fibers 141 pass through the continuous fiber profiling layer 13 from the fiber mesh felt layer 14, thereby fixing the fiber mesh felt layer 14 and the continuous fiber profiling layer 13 to each other, thereby ensuring the mutual connection between the two and avoiding mutual displacement between the layers in the XY plane profiling unit layer 11 during the stacking process.

[0038] The XY plane profiling unit limits its position in the XY horizontal direction by the penetration of the Z-direction fiber bundle 12. In some embodiments, the Z-direction fiber bundle 12 is arranged perpendicular to the XY plane profiling unit layer 11. The Z-direction fiber bundles 12 are arranged in an array, and the spacing between adjacent Z-direction fiber bundles 12 on the XY plane profiling unit layer 11 is 2.0-4.0 mm.

[0039] The contoured three-dimensional fabric 1 is supported by the continuous fiber contoured layer 13 and the Z-direction fiber bundle 12 as a supporting structure, so in some embodiments, the continuous fibers in the continuous fiber contoured layer 13 and the continuous fibers of the Z-direction fiber bundle 12 with a spacing of 2.0-4.0 mm can account for 80-95% of the overall mass of the contoured three-dimensional fabric 1. The stability of the internal structure of the contoured three-dimensional fabric 1 is ensured by designing the mass of the continuous fiber contoured layer 13 and the Z-direction fiber bundle 12.

[0040] In order to further ensure the stability of the structure of the profiling three-dimensional fabric 1, in some embodiments, the interlayer density of the XY plane profiling unit layer 11 is 10-30 layers / cm; the volume density of the profiling three-dimensional fabric 1 is 0.70-1.00 g / cm 3 .

[0041] In order to better explain the contoured three-dimensional fabric 1 provided by the present invention, some embodiments of the present invention are given below:

[0042] Embodiment 1:

[0043] A three-dimensional fabric 1, see 1 and Figure 2 , including a frame body 3 located in the middle and side wings 4 located on both sides of the frame body 3 in the length direction. In this embodiment, the side wings 4 are arranged on the opposite sides of the frame body 3, and the side wings 4 on both sides are symmetrically arranged. The frame body 3 and the side wings 4 are both composed of 225 layers of XY plane profiling unit layers 11 stacked together, and the frame body 3 and the side wings 4 are also respectively provided with Z-direction fiber bundles 12 penetrating the XY plane profiling unit layers 11.

[0044] In this embodiment, the XY plane profiling unit layer 11 is composed of two layers of continuous fiber profiling layers 13 and three layers of fiber mesh felt layers 14. The two layers of continuous fiber profiling layers 13 are respectively set as continuous fibers arranged in the circumferential direction and continuous fibers arranged in the direction of the center. In this embodiment, the thickness of the wing 4 is greater than that of the frame 3, please refer to 4, the circumferentially arranged dominant continuous fibers include a frame area 131 and a wing middle area 133 surrounding the outer periphery of the frame 3, the wing middle area 133 is arranged between the continuous fibers on the frame area 131 and extends side by side with the continuous fibers to the end of the wing 4, the circumferentially arranged continuous fibers include parts that overlap with the outer contours of the frame 3 and the wing 4 and parts that are arranged side by side on the wing 4; in this embodiment, please refer to 7, the continuous fibers arranged in the direction of the center are continuous fibers arranged between the contours of the frame 3 toward the center of the frame 3.

[0045] In this embodiment, the interlayer density of the XY plane profiling unit layer 11 is 15.0 layers / cm; the upper and lower fiber mesh felt layers 14 of the XY plane profiling unit layer 11 have a surface density of 20 g / m 2 The carbon fiber mesh felt layer 14 located in the middle has a surface density of 20g / m 2 Thus, the surface density of the XY plane profiling unit layer 11 formed by the two layers of continuous fiber profiling layers 13 and the three layers of fiber mesh felt layers 14 is 380 g / m 2 .

[0046] In this embodiment, in order to achieve the fixation between the layers of the XY plane profiling unit layer 11, refer to 3, a plurality of interlayer continuous fibers 141 are penetrated through the continuous fiber profiling layer 13; the interlayer continuous fibers 141 are formed by needle-punching the fiber mesh felt layer 14, wherein the needle-punching density of the two outer fiber mesh felt layers 14 is 4-5 needles / cm 2 , and the needle density of the fiber mesh felt layer 14 formed by the belt-shaped mesh felt is 3-4 needles / cm 2 .

[0047] In this embodiment, please refer to 2, the Z-direction fiber bundle 12 is perpendicular to the plane formed by the XY plane profiling unit layer 11, and the distance between two adjacent Z-direction fiber bundles 12 is 2.1 mm; and in this embodiment, the Z-direction fiber bundle 12 is a 6K single-strand fiber bundle.

[0048] The frame 3 and the side wings 4 of the contoured three-dimensional fabric 1 formed in this embodiment have the same height, and its volume density is 0.75 g / cm 3 The dimensions of the final contoured three-dimensional fabric 1 are 1500 mm in length, 580 mm in width and 150 mm in height; the side wings 4 are 380 mm in length and 200 mm in width.

[0049] Embodiment 2:

[0050] The contoured three-dimensional fabric 1 in this embodiment is basically the same as that in Embodiment 1, except that: in this embodiment, the frame 3 and the side wings 4 are formed by stacking 375 layers of XY plane contoured unit layers 11, wherein the XY plane contoured unit layers 11 are formed by a layer of continuous fiber contoured layer 13 and two layers of fiber mesh felt layers 14.

[0051] In this embodiment, please refer to 5, the continuous fiber profiling layer 13 is arranged circumferentially, and the dominant continuous fiber arranged circumferentially is the frame area 131 arranged on the outer periphery of the frame body 3, and the frame area 131 is closed one by one from the inside to the outside at the end of the side wing 4. The continuous fiber also includes a side wing middle area 133 arranged on the side wing 4, and the frame area 131 surrounds the side wing middle area 133 inside and is arranged side by side in a profiling manner. And in this embodiment, the continuous fiber profiling layer 13 is 12K carbon fiber through a fiber placement device according to Figure 5 The structure is laid out in single strand.

[0052] In this embodiment, the interlayer density of the XY plane profiling unit layer 11 is 25 layers / cm, and the two layers of the fiber mesh felt layer 14 have a surface density of 15g / m 2 Carbon fiber mesh felt with a surface density of 25g / m 2 The surface density of the XY plane profiling unit layer 11 formed by the above-mentioned one layer of continuous fiber profiling layer 13 and two layers of fiber mesh felt layer 14 is 280g / m 2 .

[0053] In this embodiment, in order to achieve the fixation between the layers of the XY plane profiling unit layer 11, refer to 2, a plurality of interlayer continuous fibers 141 are penetrated through the continuous fiber profiling layer 13; in this embodiment, the interlayer continuous fibers 141 are formed by needle-punching the fiber mesh felt layer 14, and the needle-punching density is 2-3 needles / cm 2 .

[0054] In this embodiment, the interlayer fixation between the XY plane profiling unit layers 11 is achieved by the Z-direction fiber bundle 12. Here, the Z-direction fiber bundle 12 is perpendicular to the plane formed by the XY plane profiling unit layer 11, and the spacing between two adjacent Z-direction fiber bundles 12 is 2.4 mm. The Z-direction fiber bundle 12 is a 3K three-strand fiber bundle.

[0055] In this embodiment, the frame 3 and the side wings 4 of the finally formed three-dimensional fabric 1 are arranged at the same height, and the volume density is 0.97 g / cm 3The final contoured three-dimensional fabric 1 has the following dimensions: length 1500 mm, width 580 mm, height 150 mm; the side wing 4 has a length of 380 mm and a width of 200 mm.

[0056] Embodiment three:

[0057] The contoured three-dimensional fabric 1 in this embodiment is basically the same as that in Embodiment 1 and Embodiment 2, except that, in this embodiment, the frame 3 and the side wings 4 are formed by 192 layers of XY plane contoured unit layers 11; wherein, the XY plane contoured unit layers 11 include two layers of continuous fiber contoured layers 13 and three layers of fiber mesh felt layers 14.

[0058] The two layers of continuous fiber profiling layers 13 are respectively continuous fibers arranged circumferentially and directed toward the center. In this embodiment, the continuous fibers directed toward the center are the same as those in Example 1. Please refer to 6. In this embodiment, the continuous fibers arranged circumferentially include a frame area 131 closed one by one from the inside to the outside at the end of the side wing 4 and a side wing middle area 133 located on the side wing 4. The frame area 131 is included in the periphery of the side wing middle area. In this embodiment, the continuous fibers arranged circumferentially are formed by double-strand laying of 204tex silicon carbide fibers by a fiber laying device.

[0059] In this embodiment, the fiber mesh felt layers 14 at the bottom and top layers have a surface density of 20 g / m 2 The carbon fiber mesh felt located between the bottom and top fiber mesh felt layers 14 has a surface density of 20 g / m 2 In this embodiment, the interlayer density between the XY plane profiling unit layers 11 is 16 layers / cm, and the surface density of the XY plane profiling unit layer 11 formed by the two layers of continuous fiber profiling layers 13 and the three layers of fiber mesh felt layers 14 is 386g / m 2 .

[0060] In this embodiment, please refer to Figure 3 The continuous fiber profiling layer 13 is provided with a plurality of interlayer continuous fibers 141 formed by needle-punched fiber mesh felt layers 14; wherein the needle-punching density on the top and bottom fiber mesh felt layers 14 is 6-7 needles / cm 2 , and the needle density on the fiber mesh felt layer 14 formed by the belt mesh felt is 4-5 needles / cm 2 .

[0061] In this embodiment, the Z-direction fiber bundle 12 is a 12K single-strand fiber bundle, and the distance between two adjacent Z-direction fiber bundles 12 is 4.0 mm.

[0062] In this embodiment, the frame 3 and the side wings 4 of the finally formed three-dimensional contour fabric 1 are arranged at the same height, and the volume density of the three-dimensional contour fabric 1 is 0.72 g / cm 3 The final outer dimensions of the contoured three-dimensional fabric 1 are: length 1400 mm, width 510 mm, height 120 mm, wherein the side wing 4 has a length of 420 mm and a width of 140 mm.

[0063] In summary, in the present invention, the XY plane profiling unit layer 11 is formed by the continuous fiber profiling layer 13 and the fiber mesh felt layer 14, and the XY plane profiling unit layer 11 is stacked and arranged, and then the Z-direction fiber bundle 12 passes through the XY plane profiling unit layer 11 to form the final profiling three-dimensional fabric 1, whose XY plane has a complete profiling continuous fiber structure layer, the continuity of the plane profiling is good, and the continuous fiber laying method and angle are highly designable; and the XY plane profiling unit layer 11 of the profiling three-dimensional fabric 1 formed in the present invention is uniform between layers, and the content of the Z-direction fiber bundle 12 is uniform, so that the overall structure of the final formed overall profiling three-dimensional fabric 1 can be more stable; and in the present invention, the continuous fiber profiling layer 13 and the fiber mesh felt layer 14 are fixed by the interlayer continuous fibers 141 formed by needle-punching the fiber mesh felt layer 14. During the production process, the needle-punching operation is simple, and it is convenient to fix the continuous fiber profiling layer 13 and the fiber mesh felt layer 14.

[0064] The above implementation modes are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit the present invention. Although the embodiments of the present invention are described in detail with reference to the above preferred implementation modes, those skilled in the art should understand that the technical solutions of the embodiments of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A contoured three-dimensional fabric, which is a hollow wing-shaped load-bearing frame fabric for aircraft, characterized in that: The invention comprises an XY plane profiling unit layer and a Z-direction fiber bundle penetrating the XY plane profiling unit layer, wherein the XY plane profiling unit layer comprises at least one continuous fiber profiling layer and a plurality of fiber mesh felt layers, and the plurality of XY plane profiling unit layers are stacked in the Z direction; the continuous fiber profiling layer of the profiling three-dimensional fabric is composed of continuous fibers on the same plane surrounding the contour and interior of the profiling three-dimensional fabric, and the dominant continuous fibers in each of the continuous fiber profiling layers are arranged circumferentially or toward the center, and the circumferential arrangement is that the continuous fibers coincide with the contour of the profiling three-dimensional fabric and / or are arranged side by side, and the center arrangement is that the continuous fibers are arranged between the contour of the profiling three-dimensional fabric toward the center of the profiling three-dimensional fabric; the plane of the profiling three-dimensional fabric comprises a frame and side wings extending outward from the frame, and the dominant continuous fibers arranged circumferentially extend from the frame to the ends of the side wings; The circumferentially arranged continuous fiber profiling layer further includes a flank middle area, wherein the flank middle area is between the circumferentially arranged dominant continuous fibers and extends side by side to the flank ends, or the circumferentially arranged dominant continuous fibers are closed one by one from the inside to the outside at the flank ends, and surround the flank middle area inside thereof and are profilingly arranged side by side; The interlayers of the XY plane contour unit layers include interlayer short fibers introduced from the fiber mesh felt.

2. The contoured three-dimensional fabric according to claim 1, characterized in that: The dominant continuous fibers in each continuous fiber contour layer are evenly distributed.

3. The contoured three-dimensional fabric according to claim 1, characterized in that: In the width direction of the side wing, the middle area of ​​the side wing is centrally arranged.

4. The contoured three-dimensional fabric according to claim 1, characterized in that: The Z-direction fiber bundle array is vertically arranged on the XY plane profiling unit layer; and the spacing between adjacent Z-direction fiber bundles on the XY plane profiling unit layer is 2.0-4.0 mm; the continuous fiber profiling layer and the Z-direction fiber bundles account for 80-95% of the overall mass.

5. The contoured three-dimensional fabric according to claim 1, characterized in that: The interlayer density of the XY plane profiling unit layer is 10-30 layers / cm; the volume density of the profiling three-dimensional fabric is 0.70-1.00 g / cm 3 .

6. The contoured three-dimensional fabric according to claim 1, characterized in that: The fibers in the contoured three-dimensional fabric include at least one of carbon fibers, graphite fibers or silicon carbide fibers.

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