Graphite foam wrapped by perforated conductive cloth and having conductive and heat dissipation functions

Abstract

The utility model discloses a pored conductive cloth wrapped graphite foam with conductive heat dissipation function, comprising a foam core layer, a graphite layer and a conductive cloth layer, two sides of the graphite layer are respectively provided with a first PET layer and a second PET layer, one side of the first PET layer far away from the graphite layer is bonded with the foam core layer, and the other side of the first PET layer far away from the graphite layer is bonded with the conductive cloth layer. One side, far away from the graphite layer, of the second PET layer is adhered to the conductive cloth layer, one side of the foam is provided with a first propylene adhesive layer, the first propylene adhesive layer is arranged on one side, far away from the second PET layer, of the conductive cloth layer, and the conductive cloth layer on the other side of the foam is provided with a through hole, so that the graphite layer covered with the second PET layer is exposed from the through hole. Due to the fact that the graphite layer has good thermal conductivity, heat can be rapidly transmitted to the conductive cloth layer through the graphite layer and dissipated to the outside air through the conductive cloth layer. Meanwhile, the conductive cloth layer has good conductivity and can effectively shield electromagnetic interference.

Description

Technical Field

[0001] This utility model relates to the field of foam, and in particular to a graphite foam wrapped with perforated conductive cloth that has conductive and heat dissipation functions. Background Technology

[0002] As electronic devices evolve towards miniaturization, lightweighting, and high performance, the integration of their internal components is increasing, leading to greater heat generation and more prominent electromagnetic interference issues. While traditional foam materials offer good shock absorption and cushioning, they lack electrical conductivity and heat dissipation capabilities, making them unsuitable for the demands of modern electronic devices. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a graphite foam wrapped in an open-pore conductive cloth with good heat dissipation, conductivity and buffering properties.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a perforated conductive cloth with conductive and heat dissipation function wrapping graphite foam, including a foam core layer, a graphite layer and a conductive cloth layer. A first PET layer and a second PET layer are respectively disposed on both sides of the graphite layer. The side of the first PET layer away from the graphite layer is bonded to the foam core layer, and the side of the second PET layer away from the graphite layer is bonded to the conductive cloth layer. A first acrylic adhesive layer is disposed on one side of the foam. The first acrylic adhesive layer is disposed on the side of the conductive cloth layer away from the second PET layer. A through hole is provided on the conductive cloth layer on the other side of the foam, so that the graphite layer covering the second PET layer is exposed through the through hole.

[0005] Furthermore, the conductive fabric layer is a metal fiber fabric, a carbon fiber fabric, or a metal-plated fiber fabric.

[0006] Furthermore, the first PET layer and the second PET layer are bonded to both sides of the graphite layer through the second acrylic adhesive layer and the third acrylic adhesive layer.

[0007] Furthermore, the foam core is polyurethane foam, polyethylene foam, or rubber foam, and the foam core is bonded to the first PET layer through a PU hot melt adhesive layer.

[0008] Furthermore, the second PET layer and the conductive cloth layer are bonded together by a fourth acrylic adhesive layer.

[0009] Furthermore, the thickness of the graphite layer is 0.01mm-0.5mm.

[0010] Furthermore, the thickness of the conductive cloth layer is 0.01mm-0.1mm, the diameter of the through hole is 1mm-2mm, and the hole spacing is 1mm-5mm.

[0011] The beneficial effects of this invention are as follows: In this structure, due to the excellent thermal conductivity of the graphite layer, heat is rapidly transferred through the graphite layer to the conductive cloth layer, and then dissipated into the outside air through the conductive cloth layer. Simultaneously, the conductive cloth layer has excellent electrical conductivity, effectively shielding against electromagnetic interference. Furthermore, the foam layer has excellent shock absorption and cushioning properties, protecting internal components of electronic devices from damage caused by vibration and impact. Additionally, the through-holes in the conductive cloth layer increase the air permeability of the entire foam structure, thereby enhancing its heat dissipation performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the graphite foam in an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the conductive cloth of the graphite foam in an embodiment of this application, showing the side with through holes.

[0014] The following layers are marked in the diagram: foam core layer 1, PU hot melt adhesive layer 2, first PET layer 3, second acrylic adhesive layer 4, graphite layer 5, third acrylic adhesive layer 6, second PET layer 7, fourth acrylic adhesive layer 8, conductive cloth layer 9, first acrylic adhesive layer 10, and through hole 11. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 The embodiments of this application disclose a graphite foam wrapped with an open conductive cloth that has conductive and heat dissipation functions, including a foam core layer 1, a graphite layer 5, and a conductive cloth layer 9. A first PET layer 3 and a second PET layer 7 are respectively disposed on both sides of the graphite layer 5. The side of the first PET layer 3 away from the graphite layer 5 is bonded to the foam core layer 1, and the side of the second PET layer 7 away from the graphite layer 5 is bonded to the conductive cloth layer 9. A first acrylic adhesive layer 10 is disposed on one side of the foam, and the first acrylic adhesive layer 10 is disposed on the side of the conductive cloth layer 9 away from the second PET layer 7. A through hole 11 is disposed on the conductive cloth layer 9 on the other side of the foam, so that the graphite layer 5 covered by the second PET layer 7 is exposed through the through hole 11.

[0017] In operation, the foam structure is bonded to the electronic components via the first acrylic adhesive layer 10. The bonded side of the foam structure is the bottom layer, while the side with through-holes 11 in the conductive fabric is the top layer. The top layer contacts the heat dissipation structure of the electronic components. When the electronic device operates, the generated heat is transferred through the foam layer, graphite layer 5, and conductive fabric layer 9. Due to the excellent thermal conductivity of the graphite layer 5, heat is rapidly transferred. Simultaneously, the through-holes 11 increase the overall air permeability of the foam structure, further enhancing its heat dissipation performance, allowing heat to be quickly dissipated into the air through the external heat dissipation structure. Furthermore, the conductive fabric layer 9 has excellent electrical conductivity, effectively shielding against electromagnetic interference. In addition, the foam layer has excellent shock absorption and cushioning properties, protecting the internal components of the electronic device from damage caused by vibration and impact.

[0018] In this embodiment, the conductive fabric layer 9 is a metal fiber fabric, a carbon fiber fabric, or a metal-plated fiber fabric.

[0019] Specifically, metal fiber cloth has good electrical conductivity and mechanical strength, while carbon fiber cloth is lightweight and high-strength. Metal-coated fiber cloth combines the advantages of both metal fiber cloth and carbon fiber cloth, possessing both good electrical conductivity and high mechanical strength and lightweight characteristics, while also effectively shielding electromagnetic interference.

[0020] In this embodiment, the first PET layer 3 and the second PET layer 7 are bonded to both sides of the graphite layer 5 through the second acrylic adhesive layer 4 and the third acrylic adhesive layer 6.

[0021] Specifically, the first PET layer 3 and the second PET layer 7 serve as support and protective layers, enhancing the stability and durability of the graphite layer 5 and preventing graphite debris from falling off. At the same time, the bonding of the acrylic adhesive layer makes the layers more tightly bonded, improving the overall strength and thermal conductivity of the structure.

[0022] In this embodiment, the foam core is polyurethane foam, polyethylene foam or rubber foam, and the foam core is bonded to the first PET layer 3 by a PU hot melt adhesive layer 2.

[0023] Specifically, polyurethane foam, polyethylene foam, and rubber foam all possess excellent shock absorption and cushioning properties, as well as a certain degree of heat resistance, meeting the basic requirements of electronic devices for foam materials. Simultaneously, the bonding through the PU hot melt adhesive layer 2 ensures a stronger bond between the foam core layer 1 and the first PET layer 3, improving the overall structural stability and durability. Furthermore, the material selection for the foam core layer 1 can be customized according to specific application scenarios and the requirements of electronic devices to meet diverse performance needs.

[0024] In this embodiment, the second PET layer 7 and the conductive cloth layer 9 are bonded together by the fourth acrylic adhesive layer 8.

[0025] Specifically, the bonding of the fourth acrylic adhesive layer 8 enhances the adhesion between the second PET layer 7 and the conductive cloth layer 9, preventing the conductive cloth layer 9 from falling off or shifting during use, thereby ensuring the overall performance and reliability of the foam structure.

[0026] In this embodiment, the thickness of the graphite layer 5 is 0.01mm-0.5mm.

[0027] Specifically, the thickness of graphite layer 5 can be 0.01mm, 0.03mm, 0.5mm, etc.

[0028] In this embodiment, the thickness of the conductive cloth layer 9 is 0.01mm-0.1mm, the diameter of the through hole 11 is 1mm-2mm, and the hole spacing is 1mm-5mm.

[0029] Specifically, the thickness of the conductive fabric layer 9 can be 0.01mm, 0.03mm, 0.05mm, or 0.1mm, etc., the diameter of the through holes 11 can be 1mm, 1.2mm, 1.5mm, 1.8mm, or 2mm, etc., and the hole spacing can be 1mm, 2mm, 3mm, 4mm, or 5mm, etc. By reasonably setting the thickness of the conductive fabric layer 9, the diameter of the through holes 11, and the hole spacing, the heat dissipation and conductivity of the foam structure can be further optimized, while maintaining its good shock absorption and cushioning performance.

[0030] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A perforated conductive cloth wrapped around graphite foam with conductive and heat-dissipating functions, characterized in that: The foam core layer (1), graphite layer (5), and conductive cloth layer (9) are provided on both sides of the graphite layer (5). The first PET layer (3) and the second PET layer (7) are respectively provided on both sides of the graphite layer (5). The side of the first PET layer (3) away from the graphite layer (5) is bonded to the foam core layer (1), and the side of the second PET layer (7) away from the graphite layer (5) is bonded to the conductive cloth layer (9). One side of the foam is provided with a first acrylic adhesive layer (10). The first acrylic adhesive layer (10) is provided on the side of the conductive cloth layer (9) away from the second PET layer (7). The conductive cloth layer (9) on the other side of the foam is provided with a through hole (11) so that the graphite layer (5) covering the second PET layer (7) is exposed through the through hole (11).

2. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation functions as described in claim 1, characterized in that: The conductive fabric layer (9) is a metal fiber fabric, a carbon fiber fabric, or a metal-plated fiber fabric.

3. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation function as described in claim 1, characterized in that: The first PET layer (3) and the second PET layer (7) are bonded to both sides of the graphite layer (5) through the second acrylic layer (4) and the third acrylic layer (6).

4. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation function as described in claim 1, characterized in that: The foam core is polyurethane foam, polyethylene foam or rubber foam, and the foam core is bonded to the first PET layer (3) through a PU hot melt adhesive layer (2).

5. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation function as described in claim 1, characterized in that: The second PET layer (7) and the conductive cloth layer (9) are bonded together by a fourth acrylic adhesive layer (8).

6. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation function as described in claim 1, characterized in that: The thickness of the graphite layer (5) is 0.01mm-0.5mm.

7. The graphite foam wrapped in perforated conductive cloth with conductive and heat dissipation function as described in claim 1, characterized in that: The thickness of the conductive cloth layer (9) is 0.01mm-0.1mm, the diameter of the through hole (11) is 1mm-2mm, and the hole spacing is 1mm-5mm.

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