Fiber bundle reinforced structure

Abstract

A fiber bundle reinforced structure (10), comprising a first fiber (11) and a second fiber (12), the rigidity of the second fiber (12) being less than that of the first fiber (11). The second fiber (12) and the first fiber (11) are combined into a continuous fiber bundle. The second fiber (12) is unevenly distributed on the first fiber (11), and the second fiber (12) is unevenly distributed on the cross section of the continuous fiber bundle. The distribution of the second fiber (12) improves the impact resistance, fatigue resistance, molding processability, and design flexibility of the fiber bundle reinforced structure, and reduces a stress from directly damaging the first fiber (11).

Description

Fiber bundle reinforced structure TECHNICAL FIELD

[0001] The present invention relates to a reinforced structure, in particular to a fiber bundle reinforced structure. BACKGROUND

[0002] Fiber bundles are applied in a wide range of fields due to their excellent mechanical properties and lightweight characteristics. However, fiber bundles with high rigidity often fail to effectively absorb and disperse impact forces when subjected to external impact, resulting in stress easily concentrating on certain parts of the fiber bundle, thereby increasing the risk of structural damage or rupture. This lack of impact absorption capability makes the structure more fragile when subjected to high-intensity external forces.

[0003] In addition, un-reinforced fiber bundle structures are prone to accumulate fatigue stress under long-term use or repeated loading, causing gradual damage or failure of the structure. Since there is a lack of flexible materials to disperse fatigue stress, the durability of these fiber bundle structures is greatly compromised when subjected to long-term use or repeated loading.

[0004] Therefore, it is a goal in the relevant field to develop a fiber bundle reinforced structure.

[0005] SUMMARY

[0006] To solve the problem of fiber bundles with high rigidity lacking flexibility, the present invention provides a fiber bundle reinforced structure, comprising:

[0007] a first fiber formed of a plurality of continuous fibers to form a continuous fiber bundle; and

[0008] a second fiber being a continuous fiber, wherein the rigidity of the second fiber is less than that of the first fiber, the second fiber is combined with the first fiber, wherein the second fiber is unevenly distributed in the first fiber, the first fiber and the second fiber together form the continuous fiber bundle, and the second fiber is unevenly distributed in the cross section of the continuous fiber bundle.

[0009] wherein the density of the second fiber is distributed in a gradient manner in the first fiber.

[0010] wherein the density of the second fiber is distributed from large to small in the first fiber, the greater the density of the second fiber at the surface of the first fiber, the smaller the density of the second fiber at the interior of the first fiber.

[0011] Further, the first fiber comprises an A side and a B side, both of which are a single side of the first fiber, wherein the A side and the B side are located on opposite sides of the first fiber.

[0012] Further, the second fibers are concentratedly distributed on the A side of the first fibers, and the second fibers are exposed on a partial surface of the A side.

[0013] Further, the second fibers are concentratedly distributed on the A side and the B side of the first fibers, and the second fibers are exposed on two partial surfaces of the first fibers.

[0014] Further, the second fibers are concentratedly distributed on the opposite four sides of the first fibers, and the second fibers are exposed on four partial surfaces of the first fibers, wherein the four partial surfaces of the first fibers are not adjacent and are uniformly and equidistantly distributed.

[0015] Wherein, the first fibers comprise continuous ceramic fiber bundles, continuous silicon carbide fiber bundles, or continuous carbon fiber bundles.

[0016] Wherein, the second fibers comprise aramid fibers, polymer fibers, metal fibers, or glass fibers.

[0017] Further, the combination of the first fibers and the second fibers comprises heat fusion, co-extrusion, adhesion, or impregnation.

[0018] According to the above, the present application provides the following effects:

[0019] 1. The second fibers improve the impact resistance of the fiber bundle reinforcement structure. The flexibility of the second fibers 12 enables the fiber bundle reinforcement structure to effectively absorb and disperse impact forces when subjected to external forces, thereby reducing stress concentration on the first fibers and prolonging the service life of the fiber bundle reinforcement structure. Further, the distribution of the second fibers can provide impact absorption effects at different positions according to different application requirements of the fiber bundle reinforcement structure.

[0020] 2. The second fibers improve the fatigue resistance of the fiber bundle reinforcement structure. The second fibers can effectively disperse the stress generated under repeated loads, thereby improving the durability of the fiber bundle reinforcement structure under long-term use, and further enabling the fiber bundle reinforcement structure to maintain stable performance in a repeated load environment.

[0021] 3. The second fibers improve the formability and processability of the fiber bundle reinforcement structure. In particular, in the manufacturing process of complex shapes, or in the need to adapt to curved surfaces or impact resistance, the second fibers can provide better flexibility and adaptability, thereby enhancing the structural consistency and performance of the fiber bundle reinforcement structure. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a schematic diagram of the present application;

[0023] FIG. 2 is a schematic diagram of a preferred first embodiment of the present application;

[0024] Figure 3 is a schematic view of a preferred second embodiment of the present application;

[0025] Figure 4 is a cross-sectional view of a preferred third embodiment of the present application.

[0026] Symbol explanation:

[0027] 10 fiber bundle reinforcement structure

[0028] 11 first fiber

[0029] 111 A side

[0030] 112 B side

[0031] 12 second fiber

[0032] N stress DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of embodiments of the present application, rather than all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] The present application will be described in further detail below with reference to the drawings:

[0035] The present application provides a fiber bundle reinforcement structure 10, which comprises a first fiber 11 and a second fiber 12 reinforcing the first fiber 11.

[0036] The fiber bundle reinforcement structure 10 further comprises the first fiber 11 and the second fiber 12, and the first fiber 11 containing the second fiber 12 is cured to form the fiber bundle reinforcement structure 10.

[0037] Preferably, the combination of the first fiber 11 and the second fiber 12 comprises heat fusion, co-extrusion, adhesion or impregnation.

[0038] Preferably, the curing method comprises resin infiltration curing, prepreg curing, heat curing, cold press forming curing, chemical curing or light curing.

[0039] The first fiber 11 comprises a plurality of continuous fibers, and the first fiber 11 is formed by the continuous fibers to form a continuous fiber bundle. The continuous fibers can form the first fiber 11 by a physical method or a chemical method. The physical method includes winding, weaving, binding, spinning, melting or extruding. The chemical method includes bonding, polymerization, curing or impregnation. The material of the continuous fibers can be carbon fibers, ceramic fibers or silicon carbide fibers with high rigidity. In the preferred embodiment of the present application, the continuous fibers are continuous carbon fibers, and the first fiber 11 is a continuous carbon fiber bundle.

[0040] Referring to FIG. 1, the first fiber 11 comprises an A side 111 and a B side 112. The A side 111 and the B side 112 are single sides of the first fiber 11. The A side 111 and the B side 112 are located at opposite sides of the first fiber 11. When the A side 111 of the first fiber 11 is subjected to a stress N, the stress N is transmitted along the first fiber 11 to the B side 112. Because the first fiber 11 has high rigidity, the first fiber 11 shows a large deformation resistance during the process of being subjected to the stress N, resulting in a low degree of deformation of the first fiber 11. The stress N is concentrated on the B side 112. When the stress N exceeds a strength limit of the first fiber 11, the B side 112 breaks.

[0041] The second fiber 12 is a continuous fiber. The rigidity of the second fiber 12 is lower than that of the first fiber 11, and the second fiber 12 has flexibility. The second fiber 12 is concentratedly distributed on at least one part of the first fiber 11. The distribution of the second fiber 12 improves the impact resistance, fatigue resistance and stress distribution of the first fiber 11.

[0042] Further, the second fiber 12 is concentratedly distributed on at least one single side of the first fiber 11, but the second fiber 12 is unevenly distributed on the first fiber 11. Preferably, the density of the second fiber 12 is gradiently distributed on the single side of the first fiber 11. The density of the second fiber 12 is gradually decreased from the surface of the first fiber 11 to the inside of the first fiber 11.

[0043] Preferably, the material of the second fiber 12 includes aramid fibers, polymer fibers or metal fibers. In the preferred embodiment of the present application, the second fiber 12 is a glass fiber.

[0044] Preferably, referring to FIG. 2, the second fibers 12 can be concentratedly distributed on the A side 111 of the first fibers 11, and at least a part of the second fibers 12 is exposed on a part of the surface of the A side 111. A plurality of the second fibers 12 are combined with the first fibers 11 along a length direction of the first fibers 11, wherein the second fibers 112 are concentrated on the A side 111. In this way, when a surface of the A side 111 is subjected to the stress N, the second fibers 12 effectively disperse the stress N, while absorbing part of the stress N, thereby reducing the concentration degree of the stress N on the A side 111 of the first fibers 11, and effectively dispersing the stress N inside the first fibers 11, reducing the concentration of the stress N on the B side 112, further delaying or reducing the risk of breaking of the first fibers 11.

[0045] In addition, the second fibers 12 protruding from the surface of the A side 111 can further enhance the impact resistance and fatigue resistance of the surface of the A side 111 of the first fibers 11. When the stress N acts on the A side, the flexibility of the second fibers 12 enhances the additional protection and deformation force of the first fibers 11, so that the first fibers 11 have higher adaptability when subjected to the stress N. Further, the flexibility of the second fibers 12 can withstand the deformation caused by the stress N, and the second fibers 12 disperse the stress N while greatly reducing the concentration of the stress N on the surface of the A side 111, thereby improving the durability and reliability of the overall structure of the first fibers 11, and further prolonging the service life of the first fibers 11.

[0046] Further, the arrangement of the second fibers 12 on the first fibers 11 helps to improve the formability of the fiber bundle reinforced structure 10, which can better withstand unidirectional bending or unidirectional stress during manufacturing and processing, so that the fiber bundle reinforced structure 10 achieves consistency and stronger structural performance.

[0047] Preferably, the fiber bundle reinforced structure 10 is suitable for application in sports equipment, protective equipment, or support components.

[0048] Preferably, referring to FIG. 3, the second fibers 12 can be concentratedly distributed on opposite sides of the first fibers 11, and at least two parts of the second fibers 12 are exposed on two parts of the surface of the first fibers 11. A plurality of the second fibers 12 are combined with the first fibers 11 along the length direction of the first fibers 11, wherein the second fibers 112 are concentrated on the A side 111 and the B side 112. In this way, when the surfaces of the A side 111 and the B side 112 are subjected to the stress N, the stress N forms a balanced stress N distribution structure between the A side 111 and the B side 112. When the stress N acts on the A side 111 and the B side 112, the second fibers 12 simultaneously absorb and disperse part of the stress, thereby reducing the concentration degree of the stress N.

[0049] By the dispersion of the second fiber 12, the stress N is more evenly transmitted to the overall structure of the first fiber 11, and effectively reduces the concentration of the stress N on the first fiber 11, and in the process of applying the stress N, the flexible absorbing part of the second fiber 12 absorbs the stress, thereby reducing the direct impact of the stress N on the first fiber 11, further slowing down the direct action of the stress N on the first fiber 11, so that the first fiber 11 can withstand in the environment of repeated load, and improve the durability and performance of the overall structure of the first fiber 11.

[0050] Further, the arrangement of the second fiber 12 on the first fiber 11 helps to improve the formability and processability of the fiber bundle reinforcement structure 10, and can better adapt to the need for repeated bending in the manufacturing process, making the fiber bundle reinforcement structure 10 more flexible.

[0051] Preferably, the fiber bundle reinforcement structure 10 is suitable for application in sports poles, building seismic systems or vehicle support structures.

[0052] Preferably, referring to FIG. 4, the second fiber 12 can be concentrated and uniformly distributed on the opposite four sides of the first fiber 11, and at least four parts of the second fiber 12 are exposed on the four part surfaces of the first fiber 11, wherein the four part surfaces are not adjacent, and the four parts are uniformly and equidistantly distributed. The arrangement of the second fiber 12 allows the second fiber 12 of each of the four parts to uniformly and equidistantly absorb and disperse the stress N when the first fiber 11 is subjected to irregular stress N, and the stress N is directed towards the center of the first fiber 11, and then dispersed in any direction in the first fiber 11.

[0053] The second fiber 12 collectively resists the stress N on the first fiber 11 and disperses the stress N to the entire first fiber 11, thereby improving the resistance of the first fiber 11 to external impact, thereby reducing damage caused by the concentration of the stress N, and by the flexibility of the second fiber 12, the second fiber 12 gives the first fiber 11 a surface modification force, when the first fiber 11 is subjected to a higher stress N, the second fiber 12 greatly reduces the risk of instantaneous fracture of the first fiber 11, and improves the safety performance of the first fiber 11 and prolongs the service life of the first fiber 11.

[0054] In addition, the second fiber 12 can make the first fiber 11 better adapt to complex shapes and curved surfaces, improve the flexibility and reliability of the first fiber 11, and better adapt to the need for impact resistance in the manufacturing process.

[0055] Preferably, the fiber bundle reinforced structure 10 is suitable for application in the support and base of precision instruments, the support structure of large machinery, or the plate-shaped sports equipment.

[0056] Further, a self-repairing agent or a microcapsule can be added in the second fiber 12, when the fiber bundle reinforced structure 10 is locally damaged, the second fiber 12 can further release the self-repairing agent or the microcapsule through heating or chemical means, increasing the service life of the fiber bundle reinforced structure 10.

[0057] According to the fiber bundle reinforced structure 10 of the present application, the distribution of the second fiber 12 in the first fiber 11 has the following effects:

[0058] 1. The second fiber 12 improves the impact resistance of the fiber bundle reinforced structure 10, the flexibility of the second fiber 12 enables the fiber bundle reinforced structure 10 to effectively absorb and disperse impact force when subjected to external force, thereby reducing stress concentration on the first fiber 11, prolonging the service life of the fiber bundle reinforced structure 10, further, the distribution of the second fiber 12 can provide impact absorption effect in different parts according to different needs of the fiber bundle reinforced structure 10.

[0059] 2. The second fiber 12 improves the fatigue resistance of the fiber bundle reinforced structure 10, the second fiber 12 can effectively disperse the stress generated under repeated load, thereby improving the durability of the fiber bundle reinforced structure 10 under long-term use, further enabling the fiber bundle reinforced structure 10 to maintain stable performance in a repeated load environment.

[0060] 3. The second fiber 12 improves the formability and processability of the fiber bundle reinforced structure 10, especially in the manufacturing process of complex shapes, or in the need to adapt to curved surfaces or impact resistance, the second fiber 12 can provide better flexibility and adaptability, thereby enhancing the structural consistency and performance of the fiber bundle reinforced structure 10.

[0061] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fiber bundle reinforcement structure, characterized by, Comprising: a first fiber, which forms a continuous fiber bundle by a plurality of continuous fibers; and a second fiber, which is a continuous fiber, wherein the second fiber has a rigidity less than the first fiber, the second fiber is combined with the first fiber, wherein the second fiber is unevenly distributed in the first fiber, the first fiber and the second fiber together form the continuous fiber bundle, and the second fiber is unevenly distributed in the cross section of the continuous fiber bundle.

2. The fiber tow reinforcement according to claim 1, wherein The density of the second fiber is distributed in the first fiber in a gradient.

3. The fiber tow reinforcement according to claim 2, wherein The density of the second fiber is distributed in the first fiber from large to small, the density of the second fiber is larger in the surface layer of the first fiber, and the density of the second fiber is smaller in the inner part of the first fiber.

4. The fiber tow reinforcement according to claim 3, wherein The first fiber comprises an A side and a B side, both of which are a single side of the first fiber, wherein the A side and the B side are located on opposite sides of the first fiber.

5. The fiber tow reinforcement according to claim 4, wherein The second fiber is concentratedly distributed on the A side of the first fiber, and the second fiber is exposed on a part of the surface of the A side.

6. The fiber bundle reinforcement structure of claim 4, wherein The second fiber is concentratedly distributed on the A side and the B side of the first fiber, and the second fiber is exposed on two parts of the surface of the first fiber.

7. The fiber tow reinforcement according to claim 3, wherein The second fiber is concentratedly distributed on the opposite four sides of the first fiber, and the second fiber is exposed on four parts of the surface of the first fiber, wherein the four parts of the surface of the first fiber are not adjacent and are evenly and equidistantly distributed.

8. The fiber tow reinforced structure of claims 1 and 7, wherein The first fiber comprises a continuous ceramic fiber bundle, a continuous silicon carbide fiber bundle or a continuous carbon fiber bundle.

9. The fiber tow reinforcement according to claim 8, wherein The second fiber comprises aramid fiber, polymer fiber, metal fiber or glass fiber.

10. The fiber tow reinforcing structure of claim 9, wherein The combination of the first fiber and the second fiber comprises heat fusion, co-extrusion, adhesion or impregnation.

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