Fiber-reinforced resin-based composite board and composite board component

Abstract

The utility model discloses a fiber reinforced resin-based composite board and a composite board component, the fiber reinforced resin-based composite board comprises a first preformed body and a second preformed body, and the first preformed body and the second preformed body are matched to form a hollow structure with a cavity; a sound insulation strengthening layer is arranged at the joint of the first preformed body and the second preformed body. The sound insulation board can meet the requirements of the board for bearing capacity, light weight and sound insulation at the same time, and solves the problem that in the prior art, the bearing capacity, light weight and sound insulation performance of the board, especially a vehicle body board are difficult to consider at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of composite material, specifically relates to a kind of fiber reinforced composite material, especially a kind of fiber reinforced resin-based composite board and composite board component. BACKGROUND

[0002] Fiber reinforced composite material (Fiber Reinforced Polymer, or Fiber Reinforced Plastic, FRP for short) is formed by reinforcing fiber material, such as glass fiber, carbon fiber, aramid fiber, etc., and matrix material through winding, molding or pultrusion forming process. According to the different reinforcing materials, the common fiber reinforced composite material is divided into glass fiber reinforced composite material (GFRP), carbon fiber reinforced composite material (CFRP) and aramid fiber reinforced composite material (AFRP). Fiber reinforced composite material is widely used in the fields of architecture, transportation and other fields due to its high specific strength, large specific modulus, strong designability, corrosion resistance and good durability.

[0003] Train body as an important part of railway vehicle must meet the design requirements of lightweight, functional, high efficiency and other aspects. Application of fiber reinforced resin-based composite material is the inevitable trend to meet the advanced performance and use demand of future railway vehicles. The train body structure in the prior art has the following types:

[0004] The first type is a laminated plate structure or a composite material plate with a plate rib structure. Although its carrying capacity can meet the requirements by designing the plate thickness or reinforcing ribs, its sound insulation performance needs to be improved by additional composite sound insulation cotton or porous foam sound insulation materials, which does not meet the requirements of train sound insulation.

[0005] The second type is a sandwich structure composite material plate composed of a surface layer and a core layer. Although it has certain carrying and sound insulation properties, the surface layer and the core layer are glued together by adhesive, which is easy to cause the surface layer and the core layer to be delaminated and lose the carrying property during long-term carrying.

[0006] The third type is a pultrusion hollow structure composite material plate. During preparation, only equal-section hollow structure can be formed, and the fibers are mainly arranged in the pultrusion direction (longitudinal direction). Except for the longitudinal direction, the carrying capacity of other directions (such as transverse direction) is poor, and the reinforcing ribs in the formed hollow structure are the bridge of sound wave transmission (sound bridge), which is difficult to meet the requirements of train body sound insulation. INVENTION CONTENTS

[0007] In view of the above technical problems and needs, the utility model provides a kind of fiber reinforced resin-based composite board and composite board component, which solves the above problems and brings other technical effects due to the adoption of the following technical features.

[0008] In one aspect, the utility model provides a kind of fiber reinforced resin-based composite board, including first preform and second preform, first preform and second preform cooperation form the hollow structure with cavity, and the connecting place of first preform and second preform is equipped with sound insulation reinforcing layer.

[0009] According to the above technical features, the first preform and the second preform cooperate to form a hollow structure with a cavity, which can block sound and further reduce the weight of the board due to the internal hollow. Meanwhile, the first preform and the second preform are composite materials of fiber reinforced resin, which can meet the requirements of high strength and high load capacity for the vehicle body.

[0010] In some embodiments of the utility model, the first preform includes a first panel and a first branch body integrally formed on one side of the first panel and protruding outward, and the second preform includes a second panel and a second branch body integrally formed on one side of the second panel and protruding outward. The connecting part of the first branch body and the second branch body is provided with a sound insulation reinforcing layer.

[0011] According to the above technical features, the first panel and the second panel are used as the use surface. The first branch body and the second branch body protrude from one side surface of the first panel and the second panel, respectively. The first branch body can play the role of a reinforcing rib, improving the strength of the entire composite board. The second branch body serves as a connecting structure of the first preform and the second preform, playing a connecting role. The first branch body and the second branch body form a hollow structure with a cavity inside the composite board, further improving the lightweight degree and reducing the overall vehicle body weight. The sound insulation reinforcing layer is arranged at the connecting part of the first branch body and the second branch body, which can enhance sound insulation and facilitate the fastening of the connecting part. Preferably, the sound insulation reinforcing layer is made of polyurethane elastomer, polyborosiloxane elastomer or interpenetrating network polymer.

[0012] In some embodiments of the utility model, the end of the first branch body and the end of the second branch body are connected through a mortise and tenon structure.

[0013] According to the above technical features, the first branch body and the second branch body are connected through a mortise and tenon structure, which is simple in structure, easy to install and has good connection stability.

[0014] In other examples of the present application, the end of the first branch body and the end of the second branch body can also be connected by mechanical fasteners such as bolts, screws, buckles, and clamps. Under the guidance of the present application, those skilled in the art can easily think of connection methods that can achieve the same function and replace the mortise and tenon connection. These connection methods should be considered as equivalent replacement methods of the present application and are within the scope of protection of the present application.

[0015] In some embodiments of the present application, the first branch body and the second branch body extend linearly, curvilinearly, or as a broken line on the first panel and the second panel, respectively, and the extension directions of the first branch body and the second branch body are consistent.

[0016] According to the above technical features, the extension form of the first branch body and the second branch body can be selected according to actual conditions such as the size of the required panel, the bearing stress condition of the panel, the application scenario of the panel, time, cost, and other factors. For example, linear extension, curvilinear extension, broken line extension, or other forms.

[0017] In some embodiments of the present application, the first panel has a plurality of first branch bodies distributed at intervals on one side, and the second panel has a plurality of second branch bodies distributed at intervals on one side. The adjacent two first branch bodies and the adjacent two second branch bodies cooperate to form a cavity.

[0018] In some embodiments of the present application, the fiber-reinforced resin-based composite panel includes a plurality of cavities.

[0019] In some embodiments of the present application, the first preform and the second preform are in the shape of an E.

[0020] In some embodiments of the present application, the cross section of the cavity is in the shape of a square, a rectangle, a circle, a triangle, or a trapezoid. The cross-sectional shape of the cavity can be selected as appropriate according to the specific situation. Those skilled in the art can form a cavity structure of the corresponding shape by using a production mold of different shapes.

[0021] In some embodiments of the present application, the fiber-reinforced resin-based composite panel is a flat panel or a curved panel. According to different use scenarios, the composite panel can be designed as a flat panel or a curved panel, improving the diversity of the product.

[0022] In another aspect, the present application provides a composite panel member, which includes a plurality of the above-mentioned fiber-reinforced resin-based composite panels, and adjacent two fiber-reinforced resin-based composite panels are laid in different directions.

[0023] Technical effects of the present application:

[0024] The fiber reinforced resin-based composite board of the utility model can meet the requirements of bearing capacity, light weight and sound insulation of the board at the same time, and solve the problem that the bearing capacity, light weight and sound insulation performance of the board, especially the vehicle body board, are difficult to be considered simultaneously in the prior art.

[0025] The fiber reinforced resin-based composite board of the utility model can be used alone or in combination, and is combined into a composite board member in a laminated manner. Since the laying manner of each layer of composite board is different, on the one hand, the reinforcing fibers in each layer of composite board can be distributed in all directions, and the strength of the composite board is improved in all directions, avoiding the problem that the fiber reinforced composite board in the prior art has excellent strength performance in only one direction, and on the other hand, the first branch body and the second branch body serving as the reinforcing ribs in each layer of composite board are also distributed in all directions, and the strength of the composite board in all directions is further improved. Therefore, while meeting the requirements of light weight and good sound insulation, the strength grade of the composite board member can be further improved as a whole, and the comprehensive performance of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0027] Figure 1 is a structural schematic cross-sectional view of the fiber reinforced resin-based composite board of the embodiment of the utility model;

[0028] Figure 2 is a structural schematic cross-sectional view of the first preform and the second preform of the embodiment of the utility model;

[0029] Figure 3 is a structural schematic view of the first preform of the embodiment of the utility model;

[0030] Figure 4 is a structural schematic view of the second preform of the embodiment of the utility model;

[0031] Figure 5It is the structural schematic view of the fiber reinforced resin-based composite board of the embodiment of the present application.

[0032] It should be noted that the above-mentioned drawings only intercept the part which can reflect the features of the present application, and the upper, lower, left (front), right (rear) can extend or repeat the structure shown in the drawings, such as the structure repetition of the first branch and the second branch, and the extension of the first panel and the second panel to the periphery.

[0033] In the drawings:

[0034] 1: fiber reinforced resin-based composite board, 10: first preform, 20: second preform, 30: cavity, 40: sound insulation reinforcement layer, 101: first panel, 102: first branch, 103: protrusion, 201: second panel, 202: second branch, 203: groove. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the embodiment of the present application will be described clearly and completely in the following with reference to the drawings of the embodiment of the present application. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiment is a part of the embodiment of the present application, not all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0036] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the patent application description and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not necessarily represent the quantity limit. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0037] The fiber reinforced resin-based composite board of the utility model is suitable for devices or equipment which have requirements for strength, light weight and sound insulation, and these devices or equipment include various means of transport, such as vehicles, aircraft, ships and the like, and is particularly suitable for train bodies, and has obvious improvement in reducing the weight of the train body and improving the sound insulation performance.

[0038] The first preform and the second preform of the utility model refer to components which are pre-processed by a mold. Since the utility model is a fiber reinforced resin-based composite board, the first preform and the second preform are pre-processed by a fiber reinforced resin-based composite material. The person skilled in the art can realize the replacement of the material under the guidance of the utility model, but all should be within the protection scope of the utility model.

[0039] The fiber referred to in the utility model includes but is not limited to carbon fiber, glass fiber, aramid fiber and ultra-high molecular weight polyethylene fiber. Preferably, the reinforcing fiber of the fiber prepreg of the utility model is one or a combination of carbon fiber, aramid fiber, glass fiber, polypropylene fiber and polyethylene fiber.

[0040] The resin of the fiber prepreg of the utility model is epoxy resin, polyurethane or polyimide.

[0041] The sound insulation reinforcing layer of the utility model can also be called a sound insulation layer, a sound absorption layer or a sound elimination layer, and is a layer structure which can reduce the propagation of sound or block sound. The material used for preparing the sound insulation reinforcing layer of the utility model includes but is not limited to polyurethane elastomer, polyborosiloxane elastomer and interpenetrating network polymer.

[0042] The first panel and the second panel of the utility model refer to the panels on the two sides of the composite board with a large size, and are not the side of the edge with a small size, and are also the use panels and load bearing panels which are exposed outside in the use state of the composite board.

[0043] The first branch body and the second branch body of the utility model are convex structures which are integrally formed with the first panel and the second panel respectively, and can be strip-shaped convex structures, plate-shaped convex structures or block-shaped convex structures, and the cross section can be square, triangular or trapezoidal. The specific shape of the first branch body and the second branch body can be deformed and adjusted according to the shape of the cavity. The first branch body and the second branch body are used for connecting the first preform and the second preform, and also have the functions of supporting and improving the strength of the composite board.

[0044] Referring to Figure 1The utility model discloses a fiber reinforced resin matrix composite board 1 including first preform 10 and second preform 20. First preform 10 and second preform 20 cooperate to form a hollow structure with cavity 30. The connecting place of first preform 10 and second preform 20 is equipped with sound insulation reinforcing layer 40. First preform 10 includes first panel 101 and first branch body 102 integrally formed on the side of first panel 101 and protruding outward. Second preform 20 includes second panel 201 and second branch body 202 integrally formed on the side of second panel 201 and protruding outward. The connecting place of first branch body 102 and second branch body 202 is equipped with sound insulation reinforcing layer 40. The end of first branch body 102 and the end of second branch body 202 are connected through mortise and tenon structure.

[0045] In Figure 2 In the embodiment shown, the end of first branch body 102 is equipped with protrusion 103, and the end of second branch body 202 is equipped with groove 203 matched with protrusion 103, so as to realize mortise and tenon connection. Obviously, in the embodiment not shown in the figure, protrusion 103 can also be arranged at the end of second branch body 202, and groove 203 can also be arranged at the end of first branch body 102.

[0046] Referring to Figure 3 And Figure 4 , first branch body 102 and second branch body 202 extend in a straight line on first panel 101 and second panel 201 respectively. In an embodiment of the utility model not shown, first branch body 102 and second branch body 202 can also extend in a curve. In an embodiment of the utility model not shown, first branch body 102 and second branch body 202 can also extend in a broken line. Regardless of the linear extension, the extension direction of first branch body 102 and second branch body 202 remains consistent, which facilitates the cooperation and installation of the two. First branch body 102 and second branch body 202 can be continuous or discontinuous in the extension direction.

[0047] First panel 101 has a plurality of first branch bodies 102 distributed at intervals on one side, and second panel 201 has a plurality of second branch bodies 202 distributed at intervals on one side, and two adjacent first branch bodies 102 and two adjacent second branch bodies 202 cooperate to form cavity 30. A plurality of first branch bodies 102 distributed at intervals and a plurality of second branch bodies 202 distributed at intervals cooperate to form a plurality of cavities 30. In Figure 1In the shown embodiment, the number of the first branch bodies 102 and the second branch bodies 202 is 3, in the shape of E, the number of the cavities 30 is 2, and the cross section of the cavity 30 is square. With the increase of the size of the fiber reinforced resin matrix composite plate 1, the number of the first branch bodies 102 and the second branch bodies 202 is increased to 4, 5, 6, or even more, which can be adjusted adaptively by the person skilled in the art according to the specific application of the fiber reinforced resin matrix composite plate 1. Similarly, in other embodiments of the present application, the cross section of the cavity 30 can also be rectangular, circular, triangular or trapezoidal, and with the change of the shape of the cavity 30, the first branch body 102 and the second branch body 202 are also changed in structure. As shown in the figure, the cross section of the cavity 30 is trapezoidal, and correspondingly, the cross section of the first branch body 102 and the second branch body 202 is also trapezoidal. Figure 5

[0048] In order to adapt to different use conditions, the fiber reinforced resin matrix composite plate 1 of the present application can be a flat plate or a curved plate. The "curved surface" referred to in the present application should be understood as a circular arc, a wave shape, a free curve and the like.

[0049] The fiber reinforced resin matrix composite plate 1 of the present application is prepared by laying the fiber prepreg layers and then hot pressing. When laying, the laying direction of each layer of fiber prepreg is different, so that the fibers of each layer of the fiber reinforced resin matrix composite plate 1 are in the shape of a rice character on the whole and extend in all directions, thereby improving the strength of the composite plate in all directions and overcoming the low strength of the composite plate in the non-extension direction of the fiber due to the fiber extending in only one direction in the prior art.

[0050] The composite plate member of the present application comprises a plurality of fiber reinforced resin matrix composite plates 1, and adjacent two fiber reinforced resin matrix composite plates 1 are laid in different directions. The present application further distributes the fibers in all directions by stacking and laying the plurality of fiber reinforced resin matrix composite plates 1 in different directions, thereby improving the strength of the composite plate member.

[0051] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.​

Claims

1. A fiber reinforced resin based composite panel, characterized by, The first preform (10) and the second preform (20) cooperate to form a hollow structure with a cavity (30), and a sound insulation reinforcing layer (40) is arranged at the joint of the first preform (10) and the second preform (20).

2. The fiber reinforced resin-based composite panel according to claim 1, characterized in that, The first preform (10) comprises a first panel (101) and a first branch body (102) integrally formed on one side of the first panel (101) and protruding outward, and the second preform (20) comprises a second panel (201) and a second branch body (202) integrally formed on one side of the second panel (201) and protruding outward, and the joint of the first branch body (102) and the second branch body (202) is provided with the sound insulation reinforcing layer (40).

3. The fiber reinforced resin based composite panel according to claim 2, characterized in that, The end of the first branch body (102) and the end of the second branch body (202) are connected through a mortise and tenon structure.

4. The fiber reinforced resin based composite panel according to claim 2, wherein, The first branch body (102) and the second branch body (202) extend linearly, curvilinearly or fold linearly on the first panel (101) and the second panel (201) respectively, and the extension directions of the first branch body (102) and the second branch body (202) are consistent.

5. The fiber reinforced resin based composite panel according to claim 2, wherein, A plurality of first branch bodies (102) are arranged on one side of the first panel (101) at intervals, and a plurality of second branch bodies (202) are arranged on one side of the second panel (201) at intervals, and two adjacent first branch bodies (102) and two adjacent second branch bodies (202) cooperate to form the cavity (30).

6. The fiber reinforced resin based composite panel according to claim 5, characterized in that, The fiber reinforced resin matrix composite panel (1) comprises a plurality of cavities (30).

7. The fiber reinforced resin based composite panel according to any one of claims 1 to 6, characterized in that, The first preform (10) and the second preform (20) are in an E shape.

8. The fiber reinforced resin based composite panel according to any one of claims 1 to 6, characterized in that, The cross section of the cavity (30) is in a square, rectangular, circular, triangular or trapezoidal shape.

9. The fiber reinforced resin based composite panel according to any one of claims 1 to 6, characterized in that, The fiber reinforced resin matrix composite panel is a flat panel or a curved panel.

10. A composite panel member, characterised in that A plurality of fiber reinforced resin matrix composite panels (1) according to any one of claims 1 to 9 are arranged in different directions.

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