Heat-conducting carbon fiber composite board

Abstract

The utility model discloses a heat-conducting carbon fiber composite board, which belongs to the technical field of carbon fiber composite materials and is characterized in that the heat-conducting carbon fiber composite board comprises a carbon fiber composite board main body, the carbon fiber composite board main body comprises two carbon fiber base material layers, and bonding layers are arranged on opposite sides of the two carbon fiber base material layers. A middle core layer is arranged between the opposite sides of the two bonding layers, a reinforcing layer is arranged on the side, away from the bonding layers, of the carbon fiber base material layer, and by arranging the reinforcing layer, the aspects of oxidation resistance, water resistance, moisture resistance, electromagnetic shielding and the like of the carbon fiber composite board body are remarkably improved; the composite board can be protected from oxidative damage and moisture erosion, the electromagnetic compatibility is improved, the comprehensive performance of the heat-conducting carbon fiber composite board is comprehensively improved, and the advantages of heat conduction, strength and the like of the heat-conducting carbon fiber composite board can be better exerted no matter the heat-conducting carbon fiber composite board is used outdoors for a long time or in special application scenes such as electronic equipment and aerospace.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber composite material technology, and in particular to a thermally conductive carbon fiber composite plate. Background Technology

[0002] With the rapid development of modern technology, the demand for high-efficiency heat conduction materials is increasing in many fields such as electronic equipment, aerospace, and industrial manufacturing. Thermally conductive carbon fiber composite plates have become one of the important materials to meet these needs due to their excellent thermal conductivity, high strength, and light weight.

[0003] Existing carbon fiber sheets typically consist of only one layer of carbon fiber, resulting in low strength.

[0004] An existing patent (publication number: CN215203795U) discloses a multi-layer carbon fiber composite plate. When connecting the first carbon fiber plate and the second carbon fiber plate, the arrangement of the first connecting rod and the second connecting rod reduces the tendency of misalignment between the first carbon fiber plate and the second carbon fiber plate. In addition, the arrangement of the first adhesive layer strengthens the connection between the first carbon fiber plate and the second carbon fiber plate, thereby enhancing the connection strength between the first carbon fiber plate and the second carbon fiber plate.

[0005] To address the aforementioned issues, existing patents offer solutions. However, when thermally conductive carbon fiber composite panels are used outdoors or in complex environments, their surfaces are easily affected by external factors. For example, prolonged exposure to air can lead to oxidation, resulting in decreased surface performance and consequently affecting the overall thermal conductivity and lifespan of the composite panel. In humid environments, moisture can easily penetrate the interior of the composite panel, not only causing a deterioration in the bonding performance between the carbon fiber and the matrix but also potentially leading to corrosion and other problems that damage the structural integrity of the composite panel. Furthermore, in some special applications, such as heat dissipation in electronic devices, the composite panel needs to possess excellent electromagnetic shielding performance, but existing composite panels often perform poorly in this regard.

[0006] Therefore, a thermally conductive carbon fiber composite plate is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a thermally conductive carbon fiber composite plate that addresses the problems of existing thermally conductive carbon fiber composite plates being susceptible to external influences when used outdoors or in complex environments. For example, prolonged exposure to air can lead to oxidation, resulting in decreased surface properties and consequently affecting the thermal conductivity and lifespan of the entire composite plate. Furthermore, in humid environments, moisture can easily penetrate the composite plate, causing not only poor adhesion between the carbon fiber and the matrix but also corrosion and other problems that damage the structural integrity of the composite plate. Additionally, in specific applications, such as heat dissipation for electronic devices, the composite plate requires excellent electromagnetic shielding performance, but existing composite plates often fall short in this regard.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a thermally conductive carbon fiber composite plate, comprising a carbon fiber composite plate body, wherein the carbon fiber composite plate body comprises two carbon fiber substrate layers, each of the two carbon fiber substrate layers having an adhesive layer on one side opposite to the other, and an intermediate core layer being provided between the two adhesive layers on one side opposite to the other, and a reinforcing layer being provided on the side of the carbon fiber substrate layer away from the adhesive layer.

[0009] The reinforcing layer includes an electromagnetic shielding coating, which is disposed on the side close to the carbon fiber substrate layer. A waterproof and moisture-proof coating is disposed on the side of the electromagnetic shielding coating away from the carbon fiber substrate layer, and an anti-oxidation coating is disposed on the side of the waterproof and moisture-proof coating away from the electromagnetic shielding coating.

[0010] Preferably, the electromagnetic shielding coating is composed of a conductive coating and is uniformly coated on one side close to the carbon fiber substrate layer.

[0011] Preferably, the waterproof and moisture-proof coating is composed of polyurethane varnish and is evenly applied to the side close to the electromagnetic shielding coating.

[0012] Preferably, the antioxidant coating is composed of aluminum oxide coating and is uniformly applied to the side close to the waterproof and moisture-proof coating.

[0013] Preferably, the intermediate core layer is made of honeycomb core material, and connecting panels are provided at the top and bottom, the connecting panels being connected to the carbon fiber substrate layer through an adhesive layer.

[0014] Preferably, the carbon fiber substrate layer has a plurality of reinforcing pillars on the side near the connecting panel, and the reinforcing pillars extend into the interior of the intermediate core layer on the side near the connecting panel, and are connected between two opposite reinforcing pillars.

[0015] Preferably, both the connecting panel and the honeycomb core material are made of aluminum and are welded together.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting up a reinforcing layer, this application significantly improves the carbon fiber composite board in terms of oxidation resistance, waterproofing, moisture resistance, and electromagnetic shielding. It can protect the composite board from oxidation damage and moisture erosion, and improve electromagnetic compatibility, thus comprehensively enhancing the overall performance of the thermally conductive carbon fiber composite board. Whether used outdoors for a long time or in special application scenarios such as electronic equipment and aerospace, it can better exert its advantages in thermal conductivity and strength.

[0018] 2. By setting an intermediate core layer, this application can effectively disperse external forces and withstand pressure, tension and other forces from different directions, thereby significantly enhancing the overall structural strength of the thermally conductive carbon fiber composite board and making it more resistant to possible deformation and damage in practical applications. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the thermally conductive carbon fiber composite plate of this utility model;

[0020] Figure 2 This is an exploded view of the main body of the carbon fiber composite plate of this utility model;

[0021] Figure 3 This is an exploded view of the reinforcing layer of this utility model;

[0022] Figure 4 This is an exploded view of the intermediate core layer of this utility model.

[0023] In the diagram, 1. Carbon fiber composite panel body; 2. Carbon fiber substrate layer; 3. Adhesive layer; 4. Intermediate core layer; 5. Reinforcing layer; 51. Electromagnetic shielding coating; 52. Waterproof and moisture-proof coating; 53. Anti-oxidation coating; 6. Connecting panel; 7. Reinforcing column. 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] Please see Figure 1-4 The present invention provides the following technical solution:

[0026] A thermally conductive carbon fiber composite plate includes a carbon fiber composite plate body 1. The carbon fiber composite plate body 1 includes two carbon fiber substrate layers 2. Each of the two carbon fiber substrate layers 2 has an adhesive layer 3 on one side opposite to the other. An intermediate core layer 4 is provided between the two adhesive layers 3 on the opposite sides. A reinforcing layer 5 is provided on the side of the carbon fiber substrate layer 2 away from the adhesive layer 3.

[0027] The reinforcing layer 5 includes an electromagnetic shielding coating 51, which is disposed on the side close to the carbon fiber substrate layer 2. A waterproof and moisture-proof coating 52 is disposed on the side of the electromagnetic shielding coating 51 away from the carbon fiber substrate layer 2, and an anti-oxidation coating 53 is disposed on the side of the waterproof and moisture-proof coating 52 away from the electromagnetic shielding coating 51.

[0028] In this embodiment, the reinforcing layer 5 is composed of an electromagnetic shielding coating 51, a waterproof and moisture-proof coating 52, and an anti-oxidation coating 53. By rationally designing and synergistically applying the anti-oxidation coating 53, the waterproof and moisture-proof coating 52, and the electromagnetic shielding coating 51, the unique functions of each coating layer are fully utilized. The anti-oxidation coating 53 protects the composite board from oxidation damage, the waterproof and moisture-proof coating 52 prevents moisture erosion, and the electromagnetic shielding coating 51 enhances electromagnetic compatibility. The three coatings work together to comprehensively improve the overall performance of the thermally conductive carbon fiber composite board body 1 from multiple aspects, enabling it to better adapt to different application environments.

[0029] Specifically, such as Figure 3 As shown, the electromagnetic shielding coating 51 is composed of conductive coating material and is uniformly coated on one side close to the carbon fiber substrate layer 2.

[0030] Specifically, such as Figure 3 As shown, the waterproof and moisture-proof coating 52 is composed of polyurethane varnish and is evenly coated on the side close to the electromagnetic shielding coating 51.

[0031] Specifically, such as Figure 3 As shown, the anti-oxidation coating 53 is composed of aluminum oxide coating and is uniformly coated on the side close to the waterproof and moisture-proof coating 52.

[0032] In this embodiment: by setting an electromagnetic shielding coating 51 composed of conductive paint, the thermally conductive carbon fiber composite board body 1 can effectively shield external electromagnetic interference, while the electromagnetic radiation generated by itself is also effectively controlled, meeting the requirements of electromagnetic shielding performance in fields such as heat dissipation of electronic devices. By setting a waterproof and moisture-proof coating 52 composed of polyurethane varnish, a waterproof layer can be formed on the surface of the thermally conductive carbon fiber composite board body 1, preventing water penetration and avoiding problems such as poor adhesion or corrosion between the carbon fiber substrate layer 2 and the intermediate core layer 4 caused by moisture. This ensures the structural integrity and stable thermal conductivity of the thermally conductive carbon fiber composite board body 1 in humid environments. Furthermore, the anti-oxidation coating 53, composed of alumina paint, can effectively resist the oxidation of oxygen in the air, protecting the performance of the thermally conductive carbon fiber composite board body 1 and maintaining its thermal conductivity at a high level even after long-term use, effectively extending the service life of the composite board.

[0033] Specifically, such as Figure 4 As shown, the middle core layer 4 is made of honeycomb core material, and connecting panels 6 are provided at the top and bottom. The connecting panels 6 are connected to the carbon fiber substrate layer 2 through the adhesive layer 3.

[0034] Specifically, such as Figure 4 As shown, a number of reinforcing columns 7 are provided on the side of the carbon fiber substrate layer 2 near the connecting panel 6, and the reinforcing columns 7 extend into the interior of the intermediate core layer 4 on the side near the connecting panel 6, and are connected to each other between two reinforcing columns 7.

[0035] Specifically, such as Figure 4 As shown, both the connecting panel 6 and the honeycomb core material are made of aluminum, and the two are welded together.

[0036] In this embodiment: by setting an intermediate core layer 4 made of aluminum honeycomb core material and using it in conjunction with the connecting panel 6, when heat is conducted from one side to the intermediate core layer 4, it can quickly transfer the heat to the other side by taking advantage of its good thermal conductivity, reducing the accumulation and loss of heat during the conduction process, effectively improving the thermal conductivity of the entire composite board, and with the cooperation of the reinforcing column 7, the various parts are tightly connected to form a stable overall frame, which can effectively disperse external forces and withstand the pressure, tension and other forces from different directions, thereby significantly enhancing the overall structural strength of the thermally conductive carbon fiber composite board body 1.

[0037] Working principle: When the thermally conductive carbon fiber composite board body 1 is in use, heat is conducted from one side to the middle core layer 4. With its excellent thermal conductivity, the heat can be quickly transferred to the other side, reducing the accumulation and loss of heat during the conduction process. Furthermore, the electromagnetic shielding coating 51 enables the thermally conductive carbon fiber composite board body 1 to effectively shield external electromagnetic interference, while also effectively controlling its own electromagnetic radiation, meeting the electromagnetic shielding performance requirements of fields such as heat dissipation of electronic equipment. The waterproof and moisture-proof coating 52 forms a waterproof layer on the surface of the thermally conductive carbon fiber composite board body 1, preventing moisture penetration and avoiding problems such as poor adhesion or corrosion between the carbon fiber substrate layer 2 and the middle core layer 4 caused by moisture. At the same time, the anti-oxidation coating 53 effectively resists the oxidation of oxygen in the air, protecting the performance of the thermally conductive carbon fiber composite board body 1 and maintaining its thermal conductivity at a high level even after long-term use, effectively extending the service life of the thermally conductive carbon fiber composite board body 1.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 thermally conductive carbon fiber composite plate, comprising a carbon fiber composite plate body (1), characterized in that: The carbon fiber composite board body (1) includes two carbon fiber substrate layers (2), each of the two carbon fiber substrate layers (2) has an adhesive layer (3) on one side opposite to the other, and an intermediate core layer (4) is provided between the two adhesive layers (3) on one side opposite to the other. A reinforcing layer (5) is provided on the side of the carbon fiber substrate layer (2) away from the adhesive layer (3). The reinforcing layer (5) includes an electromagnetic shielding coating (51), and the electromagnetic shielding coating (51) is disposed on the side close to the carbon fiber substrate layer (2). A waterproof and moisture-proof coating (52) is disposed on the side of the electromagnetic shielding coating (51) away from the carbon fiber substrate layer (2), and an anti-oxidation coating (53) is disposed on the side of the waterproof and moisture-proof coating (52) away from the electromagnetic shielding coating (51).

2. The thermally conductive carbon fiber composite plate according to claim 1, characterized in that: The electromagnetic shielding coating (51) is composed of conductive coating material and is uniformly coated on one side close to the carbon fiber substrate layer (2).

3. The thermally conductive carbon fiber composite plate according to claim 1, characterized in that: The waterproof and moisture-proof coating (52) is composed of polyurethane varnish and is evenly coated on the side close to the electromagnetic shielding coating (51).

4. The thermally conductive carbon fiber composite plate according to claim 1, characterized in that: The antioxidant coating (53) is composed of aluminum oxide coating and is uniformly applied on the side close to the waterproof and moisture-proof coating (52).

5. The thermally conductive carbon fiber composite plate according to claim 1, characterized in that: The intermediate core layer (4) is made of honeycomb core material, and a connecting panel (6) is provided at the top and bottom. The connecting panel (6) is connected to the carbon fiber substrate layer (2) through an adhesive layer (3).

6. The thermally conductive carbon fiber composite plate according to claim 5, characterized in that: The carbon fiber substrate layer (2) has several reinforcing columns (7) on the side near the connecting panel (6), and the reinforcing columns (7) on the side near the connecting panel (6) extend into the interior of the intermediate core layer (4), and are connected between two reinforcing columns (7).

7. The thermally conductive carbon fiber composite plate according to claim 5, characterized in that: Both the connecting panel (6) and the honeycomb core material are made of aluminum and are welded together.

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