Impact-resistant high-strength sandwich structure composite board

Abstract

The utility model relates to the field of design and manufacture of composite boards, and discloses an impact-resistant high-strength sandwich structure composite board which comprises a panel, an interface adhesive layer is fixedly connected to the outer wall of the panel, a compression-resistant layer is fixedly connected to the interior of the panel, a honeycomb core board is arranged in the compression-resistant layer, a protection assembly is arranged on the lower surface of the honeycomb core board, and the protection assembly is fixedly connected to the panel. The protection assembly is used for preventing the honeycomb core plate from loosening and comprises a first protection layer, the inner wall of the first protection layer is fixedly connected to the lower surface of the honeycomb core plate, a butt joint groove is formed in the first protection layer, a second protection layer is fixedly connected to the upper surface of the honeycomb core plate, and a butt joint frame is fixedly connected to the lower surface of the second protection layer. According to the utility model, the stability of the overall structure of the composite board is ensured, the situation that the composite board cannot effectively disperse and absorb impact force due to the looseness of the honeycomb core board is effectively avoided, and meanwhile, the use flexibility and applicability of the composite board are improved.

Description

Technical Field

[0001] This utility model relates to the field of composite board design and manufacturing, and in particular to an impact-resistant, high-strength sandwich structure composite board. Background Technology

[0002] In many industrial and engineering applications today, sandwich composite panels have become a highly favored key material due to their excellent specific strength and specific stiffness. From aircraft wings and fuselage components in the aerospace field to high-speed train carriage wall panels in the transportation industry, and new energy-saving curtain wall systems in the building field, sandwich composite panels play an indispensable role in helping to achieve the design goals of lightweight and high-performance structures.

[0003] Traditional sandwich composite panels often use honeycomb core panels as the core layer, with thin metal plates or fiber-reinforced composite material panels covering the top and bottom surfaces. Based on its unique hexagonal honeycomb structure, the honeycomb core panel can reduce the overall weight while efficiently bearing lateral shear force, dispersing out-of-plane pressure, and maintaining the overall mechanical stability of the composite panel.

[0004] However, in practical applications, the honeycomb core panels inside traditional composite panels can become loose during use. Due to uneven curing and shrinkage of the adhesive, gaps appear at the bonding interface between the honeycomb core and the panel. Vibrations and impacts during product transportation and installation can also cause the honeycomb core to gradually loosen inside the panel. Once the honeycomb core is loose, its originally stable structure is destroyed. When the composite panel is impacted, it cannot effectively disperse and absorb the impact force. At the same time, gaps appear at the bonding interface between the honeycomb core and the panel, allowing external moisture, air, chemicals, etc., to easily penetrate into the interior of the composite panel, thereby reducing the composite panel's impact resistance and corrosion resistance. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an impact-resistant high-strength sandwich structure composite panel, which aims to improve the problem that the internal honeycomb core panel of traditional composite panels may loosen during use, thereby reducing the impact resistance and corrosion resistance of the composite panel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength, impact-resistant sandwich composite panel, comprising a panel, an interface adhesive layer fixedly connected to the outer wall of the panel, a pressure-resistant layer fixedly connected to the inside of the panel, a honeycomb core panel disposed inside the pressure-resistant layer, a protective component disposed on the lower surface of the honeycomb core panel, the protective component being used to prevent the honeycomb core panel from loosening, the protective component comprising a first protective layer, the inner wall of the first protective layer being fixedly connected to the lower surface of the honeycomb core panel, a mating groove being formed inside the first protective layer, a second protective layer being fixedly connected to the upper surface of the honeycomb core panel, a mating frame being fixedly connected to the lower surface of the second protective layer, the outer wall of the mating frame being slidably connected to the inner wall of the mating groove.

[0007] Furthermore, the compressive layer is filled with boron carbide ceramic particles and resin.

[0008] Furthermore, a sound insulation layer is fixedly connected to the inner wall of the pressure-resistant layer, and the sound insulation layer is filled with glass wool.

[0009] Furthermore, the sound insulation layer has circular holes inside, which can effectively reduce the transmission of external noise.

[0010] Furthermore, a connecting block is fixedly connected to one side of the outer wall of the interface adhesive layer.

[0011] Furthermore, a connecting groove is provided inside the panel.

[0012] Furthermore, the connecting block can cooperate with the connecting groove to achieve the purpose of splicing multiple composite panels.

[0013] Furthermore, the sound insulation layer has slots inside.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the dual protection of the anti-compression layer and the interface adhesive layer can effectively resist the pressure applied by the outside and provide solid support for the composite board. The setting of the docking groove and the docking frame can make the first protective layer and the second protective layer tightly wrap the honeycomb core board, ensuring the stability of the overall structure of the composite board and effectively avoiding the situation that the composite board cannot effectively disperse and absorb the impact force due to the loosening of the honeycomb core board, thus effectively enhancing the impact resistance of the composite board.

[0016] 2. In this utility model, the sound insulation layer and the glass wool filling inside it can effectively absorb and block the transmission of sound. At the same time, the round holes inside the sound insulation layer can further dissipate sound energy, thereby effectively reducing the intensity of external noise intrusion into the composite board. The connecting blocks and connecting grooves cooperate with each other, making it convenient to combine and install the composite board according to actual needs in different application scenarios, thus improving the flexibility and applicability of the composite board. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a high-strength, impact-resistant sandwich composite panel proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the panel structure of a high-strength, impact-resistant sandwich composite panel proposed in this utility model.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0020] Figure 4 This is a schematic diagram of the sound insulation layer of a high-strength, impact-resistant sandwich composite panel proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the honeycomb core material of a high-strength, impact-resistant sandwich composite panel proposed in this utility model.

[0022] Legend:

[0023] 1. Panel; 2. Interface adhesive layer; 3. Compression-resistant layer; 4. Sound insulation layer; 5. Round hole; 6. Protective layer one; 7. Protective layer two; 8. Honeycomb core panel; 9. Butt frame; 10. Butt groove; 11. Connecting block; 12. Connecting groove; 13. Groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 - Figure 2This utility model provides an embodiment of an impact-resistant high-strength sandwich composite panel, comprising a panel 1, an interface adhesive layer 2 fixedly connected to the outer wall of the panel 1, the interface adhesive layer 2 being filled with epoxy resin, the epoxy resin having excellent bonding properties and a certain degree of flexibility after curing, which can buffer external impact to a certain extent; an anti-compression layer 3 fixedly connected inside the panel 1, the anti-compression layer 3 being filled with boron carbide ceramic particles and resin, the boron carbide ceramic particles having high hardness and high strength, and the resin playing a bonding and buffering role, the combination of the two giving the anti-compression layer 3 good compressive strength, which can effectively resist external pressure.

[0026] Reference Figure 3 - Figure 5 The compressive layer 3 contains a honeycomb core panel 8. A protective component is provided on the lower surface of the honeycomb core panel 8 to prevent it from loosening. This protective component includes a first protective layer 6, whose inner wall is fixedly connected to the lower surface of the honeycomb core panel 8. In use, the composite panel, through the first and second protective layers 7, can protect the honeycomb core panel 8. The first protective layer 6 has a mating groove 10 inside. The second protective layer 7 is fixedly connected to the upper surface of the honeycomb core panel 8, and a mating frame 9 is fixedly connected to the lower surface of the second protective layer 7. The key point here is that the protective layers... The lower part of the second 7 is designed with a docking frame 9, which can stably dock with the docking groove 10 inside the protective layer 6. The outer wall of the docking frame 9 is slidably connected to the inner wall of the docking groove 10. In this way, through the close cooperation of various components, the honeycomb core panel 8 is further stabilized inside the composite board. This structural design ensures the stability of the overall structure of the composite board and is of great significance. Because of this, when subjected to impact, the honeycomb core panel 8 can better work with the panel 1 and the pressure-resistant layer 3 to jointly bear the external force, effectively avoiding the situation where the structure is damaged due to the loosening of the honeycomb core panel 8 and cannot effectively disperse and absorb the impact force.

[0027] Reference Figure 4 and Figure 5The inner wall of the pressure-resistant layer 3 is fixedly connected to a sound insulation layer 4. It's worth noting that the sound insulation layer 4 on the outer wall of the protective layer is filled with glass wool. This is quite ingenious. The loose, porous structure of the glass wool effectively absorbs and blocks sound transmission, playing a crucial role in noise reduction. Simultaneously, the sound insulation layer 4 has circular holes 5 inside, which have a special function: when external sound enters, the sound undergoes reflection, refraction, and interference within the circular holes 5, further dissipating the sound energy and effectively reducing the intensity of external noise intrusion into the composite board. This provides excellent sound insulation for the environment. In short, the design of the circular holes 5 and the glass wool filling works in tandem to comprehensively block sound. To effectively reduce external noise, the sound insulation layer 4 has a connecting block 11 fixedly connected to one side of the outer wall of the interface adhesive layer 2. The panel 1 has a connecting groove 12 inside. The connecting block 11 can cooperate with the connecting groove 12 to achieve the purpose of splicing multiple composite panels. The key point here is that by cooperating with the connecting block 11 and the connecting groove 12, when multiple composite panels need to be spliced, the connecting block 11 can be inserted into the connecting groove 12 to achieve quick and accurate splicing between multiple composite panels. This makes it convenient to combine and install according to actual needs in different application scenarios, greatly improving the flexibility and applicability of the composite panels. The sound insulation layer 4 also has a groove 13 inside.

[0028] Working principle: When in use, the honeycomb core panel 8 is protected by the protective layer 6 and the protective layer 7. The docking frame 9 below the protective layer 7 can stably dock with the docking groove 10 inside the protective layer 6, thereby further stabilizing the honeycomb core panel 8 inside the composite panel. This structural design ensures the overall stability of the composite panel, so that when it is impacted, the honeycomb core panel 8 can better work with the panel 1 and the anti-compression layer 3 to share the external force, avoiding the situation where the structure is damaged due to the loosening of the honeycomb core panel 8 and cannot effectively disperse and absorb the impact force.

[0029] The compression layer 3 is filled with boron carbide ceramic particles and resin. The boron carbide ceramic particles have the characteristics of high hardness and high strength, while the resin plays the role of bonding and buffering. The combination of the two gives the compression layer 3 good compressive strength and can effectively resist the pressure applied by the outside, providing solid support for the composite board. The interface adhesive layer 2 is filled with epoxy resin. Through the excellent bonding performance of epoxy resin, the epoxy resin has a certain degree of flexibility after curing, which can buffer the external impact to a certain extent and reduce the stress concentration of the composite board caused by the impact.

[0030] The sound insulation layer 4 on the outer wall of the protective layer is filled with glass wool. Through the loose and porous structure inside the glass wool, it can effectively absorb and block the transmission of sound. At the same time, multiple round holes 5 are set inside the sound insulation layer 4. When external sound enters, the sound undergoes reflection, refraction and interference within the round holes 5, further dissipating the sound energy and effectively reducing the intensity of external noise intrusion into the composite board, providing a good sound insulation effect for the use environment. Through the cooperation of the connecting block 11 and the connecting groove 12, when multiple composite boards need to be spliced, the connecting block 11 is inserted into the connecting groove 12, which can realize the quick and accurate splicing between multiple composite boards. It is convenient to combine and install according to actual needs in different application scenarios, improving the flexibility and applicability of the composite board.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength, impact-resistant sandwich composite panel, comprising a panel (1), characterized in that: An interface adhesive layer (2) is fixedly connected to the outer wall of the panel (1), and an anti-compression layer (3) is fixedly connected to the inside of the panel (1). A honeycomb core board (8) is provided inside the anti-compression layer (3), and a protective component is provided on the lower surface of the honeycomb core board (8). The protective component is used to prevent the honeycomb core board (8) from loosening. The protective component includes a first protective layer (6), the inner wall of which is fixedly connected to the lower surface of the honeycomb core board (8), a docking groove (10) is provided inside the first protective layer (6), a second protective layer (7) is fixedly connected to the upper surface of the honeycomb core board (8), a docking frame (9) is fixedly connected to the lower surface of the second protective layer (7), and the outer wall of the docking frame (9) is slidably connected to the inner wall of the docking groove (10).

2. The impact-resistant high-strength sandwich composite panel according to claim 1, characterized in that: The compressive layer (3) is filled with boron carbide ceramic particles and resin.

3. The impact-resistant high-strength sandwich composite panel according to claim 1, characterized in that: The inner wall of the pressure-resistant layer (3) is fixedly connected to a sound insulation layer (4), which is filled with glass wool.

4. The impact-resistant high-strength sandwich composite panel according to claim 3, characterized in that: The sound insulation layer (4) has a circular hole (5) inside, which can effectively reduce the transmission of external noise.

5. The impact-resistant high-strength sandwich composite panel according to claim 1, characterized in that: A connecting block (11) is fixedly connected to one side of the outer wall of the interface adhesive layer (2).

6. The impact-resistant high-strength sandwich composite panel according to claim 5, characterized in that: The panel (1) has a connecting groove (12) inside.

7. The impact-resistant high-strength sandwich composite panel according to claim 6, characterized in that: The connecting block (11) can cooperate with the connecting groove (12) to achieve the purpose of splicing multiple composite panels.

8. The impact-resistant high-strength sandwich composite panel according to claim 4, characterized in that: The sound insulation layer (4) has a groove (13) inside.

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