Mixed type carbon fiber plate

Abstract

The utility model relates to the technical field of carbon fiber plates, in particular to a mixed type carbon fiber plate which comprises a first carbon fiber layer and a second carbon fiber layer, a core material layer is arranged between the first carbon fiber layer and the second carbon fiber layer and comprises an energy absorption layer, and the second carbon fiber layer is connected with the energy absorption layer through a second bonding layer. A reinforcing layer is arranged at the top of the energy absorption layer, a reinforced fiber layer is arranged at the top of the reinforcing layer, a heat insulation damping layer is arranged at the top of the reinforced fiber layer, and the first carbon fiber layer is connected with the heat insulation damping layer through a first bonding layer. According to the mixed type carbon fiber plate, the energy absorption layer and the reinforcing layer are arranged in the core material layer, the overall impact resistance of the plate is greatly improved, the energy absorption layer can effectively absorb and disperse external impact loads, and material failure caused by local stress concentration is avoided; the reinforcing layer adopts the honeycomb structure aluminum alloy plate design, and the geometric structure of the reinforcing layer obviously enhances the compressive strength and bending rigidity of the plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon fiber plate technical field, concretely is a mixed type carbon fiber plate. BACKGROUND

[0002] Carbon fiber composite materials gradually become the key selection in the structural material field due to its high specific strength, high specific modulus, corrosion resistance and fatigue resistance and the like, especially have outstanding performance in the lightweight and high performance demand scene. Such materials are widely used in the fields of aerospace, automobile manufacturing, building reinforcement and sports goods. In recent years, with the increase of application demand, the internal design and manufacturing process of carbon fiber composite materials have been rapidly developed, and by optimizing the structural level and core material combination, the performance is further improved, and lightweight and multifunctional are realized.

[0003] The patent with publication number CN212372859U discloses a carbon fiber composite board, which comprises a first carbon fiber layer, a second carbon fiber layer and a core material. The core material comprises alternating fiber layers and microbead layers. The core material comprises a first surface and a second surface, and the carbon fiber composite board further comprises a first epoxy resin composite layer and a second epoxy resin composite layer, wherein the first epoxy resin composite layer is used to composite the first carbon fiber layer and the first surface, and the second epoxy resin composite layer is used to composite the second carbon fiber layer and the second surface. Compared with the prior art, the present patent application can reduce the weight of the carbon fiber composite board to realize lightweight by setting the alternating fiber layers and microbead layers. Due to the respective microbead design, the microbead layer has good compression resistance, bending resistance and shear resistance, so that the structure of the carbon fiber composite board is also reliable.

[0004] Although the prior art provides a variety of microbead options and improves the performance of the board by alternating the fiber layers and the microbead layers, there are still some deficiencies in high dynamic load, complex impact working conditions and the like, for example, the spherical structure of the microbead layer is prone to material damage or bonding failure when subjected to multi-axial impact, especially hollow microbeads may be broken in high stress concentration areas, resulting in a decrease in the internal mechanical properties of the core material. In addition, the interface bonding performance of the microbead layer and the fiber layer may degrade in long-term use or complex environment, thereby limiting the service life and reliability of the overall board. In view of this, we propose a mixed type carbon fiber board. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a mixed type carbon fiber board to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A hybrid carbon fiber plate, comprising a first carbon fiber layer and a second carbon fiber layer, the first carbon fiber layer is located above the second carbon fiber layer, the first carbon fiber layer is located at the uppermost layer of the hybrid carbon fiber plate, and the main function is to provide the overall strength and rigidity of the plate, and to share part of the tensile and bending load, the second carbon fiber layer is located at the bottom layer of the hybrid carbon fiber plate, and together with the first carbon fiber layer, it constitutes the main load-bearing structure of the plate, which is used to resist external pressure and bending load;

[0008] A core material layer is provided between the first carbon fiber layer and the second carbon fiber layer, which is the core composite functional layer of the plate and is responsible for the realization of multiple properties such as energy absorption, toughening, heat insulation, and load bearing. The core material layer includes an energy absorption layer, which mainly absorbs external impact load and uniformly disperses stress. The second carbon fiber layer and the energy absorption layer are connected through a second bonding layer to ensure the stability and interface strength of the bottom structure of the plate. The top of the energy absorption layer is provided with a reinforcing layer, which mainly increases the compressive strength and bending rigidity of the plate. The top of the reinforcing layer is provided with a reinforcing fiber layer, which mainly further enhances the multidirectional tensile strength and bending rigidity of the plate, and improves the overall durability. The top of the reinforcing fiber layer is provided with a heat insulation and damping layer, which mainly insulates heat, absorbs shock, and buffers external impact force. The first carbon fiber layer and the heat insulation and damping layer are connected through a first bonding layer to ensure the interface bonding strength between the upper and lower structures.

[0009] Preferably, the first carbon fiber layer and the second carbon fiber layer are the same, and both are made of unidirectional carbon fiber cloth. The laying angles of the first carbon fiber layer and the second carbon fiber layer are 0°, 90°, and ±45°, which are alternately laid to enhance the tensile strength and bending performance of the plate. The thickness of the first carbon fiber layer and the second carbon fiber layer is 0.4-0.6mm.

[0010] Preferably, the energy absorption layer is made of closed-cell polyurethane foam material, the thickness of the energy absorption layer is 1-2mm, and the density of the energy absorption layer is 30-150 kg / m³. The reinforcing layer and the energy absorption layer are bonded by modified epoxy resin. The light weight of the energy absorption layer can effectively alleviate dynamic load and vibration impact.

[0011] Preferably, the reinforcing layer is a honeycomb structure aluminum alloy plate, the thickness of the reinforcing layer is 2-4mm, the cell diameter of the honeycomb aluminum alloy plate is 3-5mm, and the honeycomb wall thickness is 0.05-0.2mm. The geometric structure of the honeycomb provides high strength and light weight performance. The cell diameter and wall thickness of the honeycomb can be adjusted according to actual needs to adapt to different application scenarios.

[0012] Preferably, the reinforcing fiber layer is made of basalt fiber cloth, the thickness of the reinforcing fiber layer is 0.2-0.4mm, the fiber direction of the reinforcing fiber layer is 0°, 90° or ±45° alternately distributed, and the layering angle of the first carbon fiber layer is staggered, so that the multi-dimensional mechanical properties of the plate are optimized, and the reinforcing fiber layer is bonded to the top of the reinforcing layer by epoxy resin.

[0013] Preferably, the heat insulation damping layer is made of thermoplastic polyurethane material, the thickness of the heat insulation damping layer is 0.3-0.5mm, the heat insulation damping layer is directly bonded with the reinforcing fiber layer by modified epoxy resin, the shock absorption performance is provided through the flexible structure, the heat transfer from the outside to the internal core layer is reduced, and the environmental adaptability of the plate is improved.

[0014] Preferably, the first bonding layer and the second bonding layer are the same, the first bonding layer and the second bonding layer are high-temperature-resistant epoxy resin glue, and the thickness of the first bonding layer and the second bonding layer is 0.05-0.1mm, so that the stability of the plate in a high-temperature environment can be ensured, the interface durability during long-term use can be improved, the mixed carbon fiber plate has excellent durability and bearing capacity.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、The mixed carbon fiber plate, by setting up the energy absorbing layer and the reinforcing layer in the core layer, greatly improves the overall impact resistance of the plate, the energy absorbing layer can effectively absorb and disperse external impact load, avoids local stress concentration leading to material failure, the reinforcing layer adopts the design of the honeycomb structure aluminum alloy plate, the geometric structure significantly enhances the compressive strength and bending rigidity of the plate, especially under high dynamic load and complex impact working conditions, the plate shows more excellent stability, in addition, the high-performance bonding material is connected between the functional layers, the interface bonding strength is enhanced, the interface degradation problem during long-term use is avoided, so that the service life of the plate is prolonged.

[0017] 2、The mixed carbon fiber plate, the cooperation of the first carbon fiber layer, the second carbon fiber layer and the reinforcing fiber layer effectively improves the multidirectional tensile strength and bending performance of the plate, at the same time, the design of the heat insulation damping layer endows the plate with excellent shock absorption and heat insulation performance, not only can relieve external impact transmission, but also can reduce the influence of heat, significantly improve the adaptability of the plate in complex environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the overall structure schematic view of the utility model;

[0019] Fig. 2 It is the overall cross section structure schematic view of the utility model;

[0020] Fig. 3 It is the exploded structural schematic view of the core material layer in the utility model;

[0021] In the figure: 1, first carbon fiber layer; 2, second carbon fiber layer; 3, core material layer; 30, energy absorption layer; 31, reinforcing layer; 32, reinforcing fiber layer; 33, heat insulation damping layer; 4, first adhesive layer; 5, second adhesive layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] Please refer to Figs. 1-3 The utility model provides a technical scheme:

[0025] A mixed type carbon fiber plate, comprising a first carbon fiber layer 1 and a second carbon fiber layer 2, the first carbon fiber layer 1 is located above the second carbon fiber layer 2, the first carbon fiber layer 1 is located at the uppermost layer of the mixed type carbon fiber plate, and the main function is to provide the overall strength and rigidity of the plate and share part of the tensile and bending load, the second carbon fiber layer 2 is located at the bottommost layer of the mixed type carbon fiber plate, and together with the first carbon fiber layer 1, forms the main load-bearing structure of the plate, for resisting external pressure and bending load;

[0026] A core material layer 3 is arranged between the first carbon fiber layer 1 and the second carbon fiber layer 2, and is a core composite functional layer of the plate, responsible for the realization of multiple properties such as energy absorption, toughening, heat insulation, and load bearing. The core material layer 3 includes an energy absorption layer 30, which mainly functions to absorb external impact load and evenly disperse stress. The second carbon fiber layer 2 is connected to the energy absorption layer 30 through a second bonding layer 5, ensuring the stability and interface strength of the bottom structure of the plate. The top of the energy absorption layer 30 is provided with a reinforcing layer 31, which mainly functions to increase the compressive strength and bending rigidity of the plate. The top of the reinforcing layer 31 is provided with a reinforcing fiber layer 32, which mainly functions to further enhance the multidirectional tensile strength and bending rigidity of the plate, improving overall durability. The top of the reinforcing fiber layer 32 is provided with a heat insulation and damping layer 33, which mainly functions to insulate heat, absorb shock, and buffer external impact force. The first carbon fiber layer 1 is connected to the heat insulation and damping layer 33 through a first bonding layer 4, ensuring the interface bonding strength between the upper and lower structures.

[0027] In this embodiment, the first carbon fiber layer 1 and the second carbon fiber layer 2 are the same, and both are made of unidirectional carbon fiber cloth. The laying angles of the first carbon fiber layer 1 and the second carbon fiber layer 2 are 0°, 90°, and ±45°, which are alternately laid to enhance the tensile strength and bending performance of the plate. The thickness of the first carbon fiber layer 1 and the second carbon fiber layer 2 is 0.4-0.6mm.

[0028] Specifically, the energy absorption layer 30 is made of closed-cell polyurethane foam material, and the thickness of the energy absorption layer 30 is 1-2mm. The density of the energy absorption layer 30 is 30-150 kg / m³. The reinforcing layer 31 is bonded to the energy absorption layer 30 through modified epoxy resin. The energy absorption layer 30 provides lightweight while the thickness and density of the energy absorption layer 30 can effectively alleviate dynamic load and vibration impact.

[0029] Further, the reinforcing layer 31 is a honeycomb structure aluminum alloy plate, and the thickness of the reinforcing layer 31 is 2-4mm. The cell diameter of the honeycomb aluminum alloy plate is 3-5mm, and the wall thickness of the honeycomb is 0.05-0.2mm. The honeycomb structure provides high strength and lightweight performance. The cell diameter and wall thickness of the honeycomb can be adjusted according to actual needs to adapt to different application scenarios.

[0030] Further, the reinforcing fiber layer 32 is made of basalt fiber cloth, and the thickness of the reinforcing fiber layer 32 is 0.2-0.4mm. The fiber direction of the reinforcing fiber layer 32 is 0°, 90°, or ±45°, which is alternately distributed and staggered with the laying angle of the first carbon fiber layer 1, optimizing the multidimensional mechanical properties of the plate. The reinforcing fiber layer 32 is bonded to the top of the reinforcing layer 31 through epoxy resin.

[0031] Further, the thermal insulation damping layer 33 is made of thermoplastic polyurethane material, the thickness of the thermal insulation damping layer 33 is 0.3-0.5mm, the thermal insulation damping layer 33 is directly bonded with the reinforced fiber layer 32 through modified epoxy resin, the shock absorption performance is provided through the flexible structure, meanwhile the external heat transfer to the internal core material layer 3 is reduced, and the environmental adaptability of the plate is improved.

[0032] Further, the first bonding layer 4 and the second bonding layer 5 are the same, the first bonding layer 4 and the second bonding layer 5 are high-temperature-resistant epoxy resin glue, the thickness of the first bonding layer 4 and the second bonding layer 5 is 0.05-0.1mm, the stability of the plate in the high-temperature environment can be ensured, and the interface durability in the long-term use process is improved, so that the mixed carbon fiber plate has excellent durability and bearing capacity.

[0033] In use, the first carbon fiber layer 1 and the second carbon fiber layer 2 are located at the uppermost layer and the bottommost layer of the plate respectively, mainly used for providing the overall strength and rigidity of the plate, sharing the tensile and bending load, the core material layer 3 serves as a core functional layer and is composed of multiple sub-structures, each sub-structure cooperates with each other to realize multifunctionalization, the energy absorption layer 30 is responsible for absorbing external impact load and uniformly dispersing stress to avoid local stress concentration from damaging the plate, the reinforcing layer 31 is located above the energy absorption layer 30 and significantly improves the compressive strength and bending rigidity of the plate through the geometric design of the honeycomb structure to provide strong support for the overall structure, the reinforced fiber layer 32 is located above the reinforcing layer 31 to further improve the tensile strength and bending rigidity of the plate, and through the cooperation with the first carbon fiber layer 1 and the second carbon fiber layer 2, the multi-dimensional mechanical properties of the plate are optimized, the thermal insulation damping layer 33 is located at the top of the core material layer 3 and has the functions of thermal insulation and shock absorption, which not only reduces the transfer of external heat to the core material layer 3, but also effectively buffers external impact and vibration to protect the stability of the internal structure, the first bonding layer 4 and the second bonding layer 5 are respectively used for connecting the first carbon fiber layer 1 and the thermal insulation damping layer 33, and the second carbon fiber layer 2 and the energy absorption layer 30, and a high-performance epoxy resin glue is used to provide strong interfacial bonding strength to ensure that each layer structure remains stable and durable in the long-term complex environment, and the synergistic effect of each layer structure enables the mixed carbon fiber plate to have light weight, high strength, excellent impact resistance and multifunctionality.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A hybrid carbon fiber plate, comprising a first carbon fiber layer (1) and a second carbon fiber layer (2), wherein the first carbon fiber layer (1) is located above the second carbon fiber layer (2), characterized in that: A core material layer (3) is provided between the first carbon fiber layer (1) and the second carbon fiber layer (2). The core material layer (3) includes an energy-absorbing layer (30). The second carbon fiber layer (2) and the energy-absorbing layer (30) are connected by a second adhesive layer (5). A reinforcing layer (31) is provided on the top of the energy-absorbing layer (30). A reinforcing fiber layer (32) is provided on the top of the reinforcing layer (31). A heat-insulating damping layer (33) is provided on the top of the reinforcing fiber layer (32). The first carbon fiber layer (1) and the heat-insulating damping layer (33) are connected by a first adhesive layer (4).

2. The hybrid carbon fiber plate according to claim 1, characterized in that: The first carbon fiber layer (1) and the second carbon fiber layer (2) are the same. Both the first carbon fiber layer (1) and the second carbon fiber layer (2) are made of unidirectional carbon fiber cloth. The thickness of the first carbon fiber layer (1) and the second carbon fiber layer (2) is 0.4-0.6 mm.

3. The hybrid carbon fiber plate according to claim 1, characterized in that: The energy-absorbing layer (30) is made of closed-cell polyurethane foam material, and the thickness of the energy-absorbing layer (30) is 1-2 mm.

4. The hybrid carbon fiber plate according to claim 1, characterized in that: The reinforcing layer (31) is an aluminum alloy plate with a honeycomb structure, and the thickness of the reinforcing layer (31) is 2-4 mm.

5. The hybrid carbon fiber plate according to claim 1, characterized in that: The reinforcing fiber layer (32) is made of basalt fiber cloth and the thickness of the reinforcing fiber layer (32) is 0.2-0.4 mm.

6. The hybrid carbon fiber plate according to claim 1, characterized in that: The heat insulation damping layer (33) is made of thermoplastic polyurethane material and the thickness of the heat insulation damping layer (33) is 0.3-0.5mm.

7. The hybrid carbon fiber plate according to claim 1, characterized in that: The first adhesive layer (4) and the second adhesive layer (5) are the same. The first adhesive layer (4) and the second adhesive layer (5) are high-temperature resistant epoxy resin adhesives. The thickness of the first adhesive layer (4) and the second adhesive layer (5) is 0.05-0.1mm.

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