Composite material structure with functional interlayer and method of making
By laying functional interlayers in the composite material and molding them integrally with the skin, combined with the design of connection and protective layers, the problem of easy detachment of functional layers in resin-based composite materials is solved, achieving high-strength overall structure and functional continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 上海晋飞碳纤科技股份有限公司
- Filing Date
- 2024-02-19
- Publication Date
- 2026-06-26
AI Technical Summary
Existing resin-based composite materials suffer from problems such as easy detachment or breakage of functional layers in terms of special functions such as conductivity, electromagnetic shielding, and heat insulation, which affects the integrity and stability.
By laying a functional interlayer between the inner and outer skins, and extending one or both ends of the interlayer beyond the length of the skin to form a protruding part, it is connected to the functional components and covered with a protective layer. An integral molding process is used to solidify it with the skin, and combined with welding, gluing and other connection methods, a structural connection layer and a protective layer are formed.
It improves the overall structural strength and continuity of the functional interlayer, avoids detachment and breakage, ensures that the functional layer does not crack under stress, and the protective layer further enhances the structural continuity and performance safety of the functional layer.
Smart Images
Figure CN117984587B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of advanced manufacturing technology of composite materials, specifically to a composite material structure with functional sandwich layers and its manufacturing method. Background Technology
[0002] Resin-based composite materials are widely used in aerospace, rail transportation, automotive, and sports and leisure industries due to their advantages such as lightweight, high strength, good environmental adaptability, and designability of performance and function. However, existing resin-based composite materials are limited by the properties of the resin, making it difficult to meet special functions such as conductivity, electromagnetic shielding, and thermal insulation. Currently, functional layers are mainly designed and manufactured by applying or spraying functional layers onto the surface of the resin-based composite material. However, for composite material products with high requirements for the integrity and stability of the implemented functions, the applied or sprayed functional layers are prone to peeling or breakage, affecting the integrity and stability of the function.
[0003] Therefore, a new technological solution is needed. Summary of the Invention
[0004] In view of this, the embodiments of this specification provide a composite material structure with functional sandwich layers and a method for manufacturing the same, which improves the stability, integrity and structural continuity of the functional layers in the composite material structure.
[0005] The embodiments in this specification provide the following technical solutions:
[0006] On the one hand, a method for fabricating a composite material structure with a functional sandwich layer is provided, including:
[0007] An inner skin, a functional interlayer, and an outer skin are sequentially laid on a molding die and then integrally molded into a composite material layer. The functional interlayer is laid between the inner skin and the outer skin and its length exceeds the length of the inner skin and the outer skin, such that one or both ends of the functional interlayer are exposed relative to the inner skin and the outer skin to form a first end protrusion and / or a second end protrusion.
[0008] The first end protruding portion and / or the second end protruding portion are connected to the functional component on the side near the inner skin to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer;
[0009] The first end protrusion and / or the second end protrusion are covered with a protective layer on the side near the outer skin.
[0010] In some embodiments, an inner skin, a functional interlayer, and an outer skin are sequentially laid on a molding die, and then integrally molded into a composite material layer, including:
[0011] The inner skin of the prepreg sheet, the functional interlayer, and the outer skin of the prepreg sheet are sequentially laid on the molding die, and then integrally formed into the composite material layer through an integral molding process.
[0012] In some embodiments, an inner skin, a functional interlayer, and an outer skin are sequentially laid on a molding die, and then integrally molded into a composite material layer, including:
[0013] The inner skin of the prepreg sheet is laid on the molding core mold of the molding mold, and an inner skin block is placed at the end of the molding core mold. The inner skin block has the same thickness as the inner skin, so that the height of the inner skin block is flush with the inner skin.
[0014] The functional interlayer is laid on the inner skin and the inner skin block, with the first end protruding portion and / or the side of the second end protruding portion near the inner skin laid on the inner skin block;
[0015] An outer skin block is laid on the side of the first end protrusion and / or the second end protrusion near the outer skin, and then the outer skin is laid on the functional interlayer so that the outer skin is laid to the edge of the outer skin block.
[0016] The inner skin, the functional interlayer, and the outer skin are integrally molded to obtain the composite material layer.
[0017] In some embodiments, the integral molding process is compression molding or air bag compression molding, and the process conditions for compression molding or air bag compression molding are as follows: temperature is 70-180°C, mold pressure is 0.1-20MPa, and molding time is 10-600min.
[0018] In some embodiments, the blowing pressure of the blown bag compression molding is 0.2-2 MPa.
[0019] In some embodiments, the first end protrusion and / or the second end protrusion are connected to a functional component on the side near the inner skin to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer, including:
[0020] The first end protruding portion and / or the second end protruding portion, on the side near the inner skin, form a functional connection layer with the functional component through welding or filling processes; the inner skin and the functional component form a structural connection layer through adhesive bonding, mechanical connection and / or filling processes.
[0021] In some embodiments, the first end protrusion and / or the second end protrusion are covered with a protective layer on the side near the outer skin, including:
[0022] The protective layer is a protective layer formed by filling the surface of the functional component and the outer skin, the first end protrusion and / or the second end protrusion with adhesive or epoxy resin and curing it. The protective layer is flush with the outer skin.
[0023] In some embodiments, the functional interlayer is a conductive layer, a thermally conductive layer, a thermally insulating layer, a wave-absorbing layer, a sound-absorbing layer, a piezoelectric layer, a damping layer, a magnetic layer, or an electromagnetic shielding layer, and the functional component is a conductive component, a thermally conductive component, a thermally insulating component, a wave-absorbing component, a sound-absorbing component, a piezoelectric component, a damping component, a magnetic component, or an electromagnetic shielding component that has a function corresponding to the functional interlayer.
[0024] On the other hand, a composite material structure with a functional sandwich layer is provided, including a composite material layer, functional components, and a protective layer.
[0025] The composite material layer is integrally formed by sequentially laying an inner skin, a functional interlayer, and an outer skin. During integral forming, the functional interlayer is laid between the inner skin and the outer skin, and its length exceeds the length of the inner skin and the outer skin, so that one or both ends of the functional interlayer are exposed relative to the inner skin and the outer skin, forming a first end protrusion and / or a second end protrusion.
[0026] The first protruding portion and / or the second protruding portion are connected to the functional component on the side near the inner skin to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer; the first protruding portion and / or the second protruding portion are covered with the protective layer on the side near the outer skin.
[0027] In some embodiments, the first end protrusion and / or the second end protrusion are connected to the functional component by welding or material filling to form the functional connection layer, the inner skin and the functional component are connected by adhesive bonding, mechanical connection and / or material filling to form a structural connection layer, and the protective layer is bonded to the first end protrusion and / or the second end protrusion by adhesive bonding.
[0028] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:
[0029] 1. By integrally curing the functional interlayer with the inner and outer skins, compared with the solution of applying and spraying functional layers on the surface of composite materials, the structural interlayer in the composite material obtained by integral curing has higher overall structural strength and no risk of falling off or breaking.
[0030] 2. Connecting the functional interlayer with other functional components (such as by welding) can integrate the other functional components and the composite material functional interlayer into one unit, thereby effectively ensuring the integrity and continuity of the functional layer.
[0031] 3. Other functional components and the inner skin of the composite material layer are bonded together by adhesive bonding, mechanical connection and / or filling processes to achieve high overall structural strength and ensure that the functional layer does not crack or suffer damage due to external forces under stress during product use, thus ensuring the integrity and continuity of the functional layer.
[0032] 4. In addition, a protective layer is designed on the outer surface of the functional layer to protect the functional connection layer and prevent damage to the functional connection layer due to external collisions, thereby further improving the structural continuity, integrity and performance safety of the functional layer. Attached Figure Description
[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of a composite material structure with a functional sandwich layer provided in an embodiment of this application;
[0035] Figure 2 This is a schematic diagram of a composite material structure with a functional sandwich layer provided in an embodiment of this application;
[0036] Figure 3 This is a structural illustration of the composite material provided in the embodiments of this application during the manufacturing process;
[0037] Figure 4 This is a schematic diagram of the composite material structure fabrication method provided in the embodiments of this application;
[0038] Figure 5 This is a schematic diagram of the composite material layer fabrication process in the composite material structure fabrication method provided in the embodiments of this application. Detailed Implementation
[0039] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0040] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. 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.
[0041] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0042] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0043] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.
[0044] like Figure 1 As shown in the embodiments of this application, the method for manufacturing a composite material structure with a functional sandwich layer includes the following steps:
[0045] S1. The inner skin 4, functional interlayer 3, and outer skin 2 are sequentially laid on a molding die, and then integrally molded into a composite material layer. The functional interlayer is integrally cured with the inner and outer skins. Compared to methods of applying and spraying functional layers onto the surface of the composite material, the structural interlayer in the integrally cured composite material has no risk of detachment or breakage. The functional interlayer 3 is laid between the inner skin 4 and the outer skin 2, and its length exceeds the lengths of the inner skin 4 and the outer skin 2, so that one or both ends of the functional interlayer 3 are exposed relative to the inner skin 4 and the outer skin 2, forming a first protruding part A and / or a second protruding part B. That is, it can be formed as needed. Figure 1 The first end protrusion A and the second end protrusion B shown are both exposed to the outside. Alternatively, the first end protrusion A can be formed as shown in Figure 2, or only the second end protrusion B can be formed in other embodiments.
[0046] S2. The first end protruding part A and / or the second end protruding part B are connected to the functional component 7 on the side close to the inner skin 4 to form a functional connection layer 6. The inner skin 4 is connected to the functional component 7 to form a structural connection layer 5, which realizes the stable connection between the functional layer of the composite material and other material functional components, and ensures the integrity and continuity of the functional layer.
[0047] S3. The first end protruding part A and / or the second end protruding part B are covered with a protective layer 1 on the side near the outer skin 2. The protective layer is formed by covering the protective material, thereby protecting the external of the functional interlayer 3 and the functional component 7, and protecting the product from breakage or damage to the functional layer due to external impact or force.
[0048] In some embodiments, in step S1 above, the inner skin 4, the functional interlayer 3, and the outer skin 2 are sequentially laid on the molding die and then integrally molded into a composite material layer, which can be implemented in the following manner:
[0049] The inner skin 4, functional interlayer 3, and outer skin 2 of the prepreg sheet are sequentially laid on the molding die, and then integrally molded into a composite material layer through an integral molding process.
[0050] In some embodiments, in step S1 above, the inner skin 4, the functional interlayer 3, and the outer skin 2 are sequentially laid on the molding die and then integrally molded into a composite material layer. This can be implemented as the following sub-steps:
[0051] S11. Lay the inner skin 4 of the prepreg sheet on the molding core mold 8 of the molding mold, and place the inner skin block 10 at the core mold end of the molding core mold 8. The inner skin block 10 has the same thickness as the inner skin 4. Keep the inner skin block 10 in contact with the side wall and bottom surface of the molding core mold 8, so that the height of the inner skin block 10 is flush with the inner skin 4.
[0052] S12. A functional interlayer 3 is laid on the inner skin 4 and the inner skin block 10. The side of the first end protruding part A and / or the second end protruding part B that is close to the inner skin 4 is laid on the inner skin block 10, so that the lower surface of the first end protruding part A and / or the lower surface of the second end protruding part B can be in contact with the upper surface of the inner skin block 10.
[0053] S13. Lay an outer skin block 9 on the side of the first end protruding part A and / or the second end protruding part B near the outer skin 2. The outer skin block 9 can be attached to the side wall of the molding core mold 8 and the lower surface of the first end protruding part A and / or the lower surface of the second end protruding part B. Then continue to lay the outer skin 2 on the functional interlayer 3 so that the outer skin 2 is laid to the edge of the outer skin block 9, so as to achieve seamless connection between the outer skin 2, the inner skin 4 and the first end protruding part A and / or the second end protruding part B of the functional interlayer 3 and the outer skin block 9 and the inner skin block 10.
[0054] S14. Then, the laid inner skin 4, functional interlayer 3, and outer skin 2 are integrally formed by heating and pressurizing using an integral molding process to obtain a composite material layer.
[0055] In some embodiments, the integral molding process can be compression molding, air-blow bag molding, or any other feasible process. Specific process conditions for compression molding or air-blow bag molding are as follows: temperature 70-180°C, specifically determined based on the properties of the composite base material (e.g., resin-based), preferably 140°C; mold pressure 0.1-20 MPa, specifically determined based on the mold and pressurizing equipment parameters, preferably 3 MPa; molding time 10-600 min, specifically determined based on the properties of the composite base material, product structure, mold structure, mold material, etc., preferably 90 min. Further, in some embodiments, the air pressure in the air-blow bag molding process is 0.2-2 MPa, preferably 1 MPa.
[0056] In some embodiments, in step S2 above, the first end protruding portion A and / or the second end protruding portion B are connected to the functional component 7 on the side near the inner skin 4 to form a functional connection layer 6, and the inner skin 4 is connected to the functional component 7 to form a structural connection layer 5, which can be implemented in the following manner:
[0057] The first protruding portion A and / or the second protruding portion B, on the side near the inner skin 4, form a functional connection layer 6 with the functional component 7 through welding or filling processes; the inner skin 4 and the functional component 7 form a structural connection layer 5 through adhesive bonding, mechanical connection and / or filling processes.
[0058] In some embodiments, in step S3 above, the protective layer 1 covering the first end protrusion A and / or the second end protrusion B on the side near the outer skin 2 can be implemented as follows: the protective layer 1 is a protective layer formed after the adhesive is filled and cured in the area between the functional component 7 and the outer skin 2, on the surface of the first end protrusion A and / or the surface of the second end protrusion B.
[0059] In some embodiments, the functional interlayer is a conductive layer, a thermally conductive layer, a thermally insulating layer, a wave-absorbing layer, a sound-absorbing layer, a piezoelectric layer, a damping layer, a magnetic layer, or an electromagnetic shielding layer, etc., and the functional component is a conductive component, a thermally conductive component, a thermally insulating component, a wave-absorbing component, a sound-absorbing component, a piezoelectric component, a damping component, a magnetic component, or an electromagnetic shielding component, etc., that has a function corresponding to the functional interlayer.
[0060] In some embodiments, depending on the specific functional scenario, such as the need to achieve conductive, thermally conductive, heat-insulating, wave-absorbing, sound-absorbing, piezoelectric, damping, magnetic, or electromagnetic functions, the functional interlayer 3 forming the composite material can be configured as a conductive layer, thermally conductive layer, heat-insulating layer, wave-absorbing layer, sound-absorbing layer, piezoelectric layer, damping layer, magnetic layer, or electromagnetic shielding layer, etc., and the functional component 7 adopts a conductive component, thermally conductive component, heat-insulating component, wave-absorbing component, sound-absorbing component, piezoelectric component, damping component, magnetic component, or electromagnetic shielding component, etc., corresponding to the functions of the functional interlayer 3.
[0061] In some embodiments, depending on the specific material of the functional interlayer 3, an appropriate connection method or adhesive can be selected for connection. For example, when the functional interlayer 3 is a conductive layer, the first protruding portion A and / or the second protruding portion B exposed at the functional interlayer 3 can be spot-welded to the functional component 7 to form a functional connection layer 6, or welded using nanoscale conductive adhesive (such as gold, silver, or copper nanoscale conductive adhesive). Furthermore, to achieve conductivity, the functional interlayer 3 can be made of metal (such as copper mesh, copper foil, nickel mesh, nickel foil, graphene film, etc.), and the corresponding functional component 7 can also be made of metal (such as aluminum alloy, copper, silver, or other metals with good conductivity). In some embodiments, the cutting interfaces of the functional interlayer are connected using an adhesive with the same function; for example, the cutting interfaces of the conductive layer of the functional interlayer 3 are bonded with conductive adhesive to ensure conductivity.
[0062] In some embodiments, the inner skin 4 and the outer skin 2 may be made of resin-based composite materials. The inner skin 4 and the functional component 7 may be bonded together by adhesive bonding, mechanical connection (such as locking connection), and / or filling processes to form a structural connection layer 5. In some embodiments, an epoxy-based structural adhesive (such as epoxy resin) may be used to bond the inner skin 4 and the functional component 7. In some embodiments, a protective layer 1 may be formed by filling the area between the functional component 7 and the outer skin 2, on the surface of the first end protrusion A, and / or on the surface of the second end protrusion B with an epoxy-based structural adhesive (such as epoxy resin) and curing it.
[0063] In addition, this application embodiment also provides a composite material structure with a functional interlayer, including a composite material layer, a functional component 7, and a protective layer 1. The composite material layer is integrally formed by sequentially laying an inner skin 4, a functional interlayer 3, and an outer skin 2. During integral molding, the functional interlayer 3 is laid between the inner skin 4 and the outer skin 2, and its length exceeds the length of the inner skin 4 and the outer skin 2, so that one or both ends of the functional interlayer 3 are exposed relative to the inner skin 4 and the outer skin 2 to form a first end protrusion A and / or a second end protrusion B. The first end protrusion A and / or the second end protrusion B are connected to the functional component 7 on the side near the inner skin 4 to form a functional connection layer 6. The inner skin 4 and the functional component 7 are connected to form a structural connection layer 5. The first end protrusion A and / or the second end protrusion B are covered with the protective layer 1 on the side near the outer skin 2.
[0064] In some embodiments, a functional connection layer 6 is formed between the first end protruding portion A and / or the second end protruding portion B and the functional component 7 by welding or material filling; a structural connection layer 5 is formed between the inner skin 4 and the functional component 7 by adhesive bonding, mechanical connection and / or material filling; and a protective layer 1 is a protective layer formed after the adhesive is filled and cured on the surface of the first end protruding portion A and / or the surface of the second end protruding portion B.
[0065] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions in the system embodiments.
[0066] Furthermore, this specification uses specific terms to describe embodiments thereof. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Moreover, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined.
[0067] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods described herein. Although various examples have been discussed in the foregoing disclosure of some embodiments of the invention that are currently considered useful, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the spirit and scope of the embodiments described herein. For example, while the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing processing devices or mobile devices.
[0068] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.
Claims
1. A method for fabricating a composite material structure with a functional sandwich layer, characterized in that, include: An inner skin, a functional interlayer, and an outer skin are sequentially laid on a molding die and then integrally molded into a composite material layer. The functional interlayer is laid between the inner skin and the outer skin and its length exceeds the length of the inner skin and the outer skin, such that one or both ends of the functional interlayer are exposed relative to the inner skin and the outer skin to form a first end protrusion and / or a second end protrusion. The first end protruding portion and / or the second end protruding portion are connected to the functional component on the side near the inner skin to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer; The first end protrusion and / or the second end protrusion are covered with a protective layer on the side near the outer skin; The process involves sequentially laying the inner skin, functional sandwich layer, and outer skin onto a molding die, and then integrally molding them into a composite material layer, including: The inner skin of the prepreg sheet is laid on the molding core mold of the molding mold, and an inner skin block is placed at the end of the molding core mold. The inner skin block has the same thickness as the inner skin, so that the height of the inner skin block is flush with the inner skin. The functional interlayer is laid on the inner skin and the inner skin block, with the first end protruding portion and / or the side of the second end protruding portion near the inner skin laid on the inner skin block; An outer skin block is laid on the side of the first end protrusion and / or the second end protrusion near the outer skin, and then the outer skin is laid on the functional interlayer so that the outer skin is laid to the edge of the outer skin block. The inner skin, the functional interlayer, and the outer skin are integrally molded to obtain the composite material layer.
2. The method for fabricating a composite material structure with a functional sandwich layer according to claim 1, characterized in that, The integral molding process is compression molding or bag compression molding. The process conditions for compression molding or bag compression molding are as follows: temperature is 70-180°C, mold pressure is 0.1-20MPa, and molding time is 10-600min.
3. The method for manufacturing a composite material structure with a functional sandwich layer according to claim 2, characterized in that, The internal pressure of the bag compression molding is 0.2-2 MPa.
4. The method for fabricating a composite material structure with a functional sandwich layer according to claim 1, characterized in that, The first end protruding portion and / or the second end protruding portion, on the side near the inner skin, are connected to the functional component to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer, including: The first end protruding portion and / or the second end protruding portion, on the side near the inner skin, form a functional connection layer with the functional component through welding or filling processes; the inner skin and the functional component form a structural connection layer through adhesive bonding, mechanical connection and / or filling processes.
5. The method for fabricating a composite material structure with a functional sandwich layer according to claim 1, characterized in that, The first end protrusion and / or the second end protrusion are covered with a protective layer on the side near the outer skin, including: The protective layer is a protective layer formed by filling the surface of the functional component and the outer skin, the first end protrusion and / or the second end protrusion with adhesive or epoxy resin and curing it. The protective layer is flush with the outer skin.
6. The method for manufacturing a composite material structure with a functional sandwich layer according to any one of claims 1 to 5, characterized in that, The functional interlayer is a conductive layer, a thermally conductive layer, a thermally insulating layer, a wave-absorbing layer, a sound-absorbing layer, a piezoelectric layer, a damping layer, a magnetic layer, or an electromagnetic shielding layer. The functional components are conductive components, thermally conductive components, thermally insulating components, wave-absorbing components, sound-absorbing components, piezoelectric components, damping components, magnetic components, or electromagnetic shielding components that have functions corresponding to the functional interlayer.
7. A composite material structure with a functional sandwich layer, characterized in that, It is manufactured using the method for producing a composite material structure with a functional sandwich layer as described in any one of claims 1-6, wherein the composite material structure includes a composite material layer, functional components, and a protective layer. The composite material layer is integrally formed by sequentially laying an inner skin, a functional interlayer, and an outer skin. During integral forming, the functional interlayer is laid between the inner skin and the outer skin, and its length exceeds the length of the inner skin and the outer skin, so that one or both ends of the functional interlayer are exposed relative to the inner skin and the outer skin, forming a first end protrusion and / or a second end protrusion. The first protruding portion and / or the second protruding portion are connected to the functional component on the side near the inner skin to form a functional connection layer, and the inner skin is connected to the functional component to form a structural connection layer; the first protruding portion and / or the second protruding portion are covered with the protective layer on the side near the outer skin.
8. The composite material structure with a functional sandwich layer according to claim 7, characterized in that, The first end protruding portion and / or the second end protruding portion are welded to the functional component to form the functional connection layer. The inner skin and the functional component are bonded together, mechanically connected and / or filled with material to form a structural connection layer. The protective layer is a protective layer located between the functional component and the outer skin, formed after the surface of the first end protruding portion and / or the second end protruding portion is filled with adhesive or epoxy resin and cured. The protective layer is flush with the outer skin.