High-viscosity efficient heat-conducting silica gel sheet

Abstract

The utility model discloses a high-viscosity efficient heat-conducting silica gel sheet which comprises a silica gel substrate layer, the upper surface of the silica gel substrate layer is fixedly connected with a graphene heat-conducting layer, the upper surface of the graphene heat-conducting layer is fixedly provided with a plurality of graphite heat-conducting columns, and the graphite heat-conducting columns are linearly distributed at equal intervals. A graphite heat conduction layer is fixedly connected between the top ends of the plurality of graphite heat conduction columns, the upper surface of the graphite heat conduction layer is bonded with a strong bonding layer through glue, a release film is attached to the outer surface of the strong bonding layer, and an easy-to-tear strip is arranged on the outer wall of one side of the release film. The heat-conducting silica gel sheet has the advantages that the heat-conducting silica gel sheet has high-efficiency heat-conducting use performance, heat can be quickly transferred to a heat dissipation area from a heat source, so that the heat-conducting and heat-dissipation efficiency is improved, the overall use performance is effectively improved, meanwhile, the internal tensile effect of the heat-conducting silica gel sheet can be effectively improved through the arranged tensile interlayer, and the heat-conducting silica gel sheet has good tensile toughness.

Description

Technical Field

[0001] This utility model relates to the field of thermally conductive silicone technology, specifically a highly adhesive and efficient thermally conductive silicone sheet. Background Technology

[0002] Thermal conductive silicone pads are a type of thermally conductive medium material synthesized through a special process using silicone as the base material and adding various auxiliary materials such as metal oxides. In the industry, they are also known as thermal conductive silicone pads, thermal conductive silicone sheets, soft thermal conductive pads, thermal conductive silicone gaskets, etc. Thermal conductive silicone pads have a wide range of applications and can generally be used in the control motherboards of electronic and electrical products, pads and feet inside and outside motors, electronic and electrical appliances, automotive machinery, computer mainframes, laptops, DVDs, VCDs, and any materials that require filling and heat dissipation modules.

[0003] Thermal conductive silicone pads have adjustable thermal conductivity and better thermal stability. They are also convenient to install, test, and reuse. However, most existing thermal conductive silicone pads adopt a one-piece silicone structure design. Therefore, in actual use, compared with composite thermal conductive structures, pure thermal conductive silicone materials have poor thermal conductivity and low heat transfer efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a highly adhesive and efficient thermally conductive silicone pad to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a strong-adhesion, high-efficiency thermally conductive silicone sheet, comprising a silicone base layer, a graphene thermally conductive layer fixedly connected to the upper surface of the silicone base layer, a plurality of graphite thermally conductive pillars fixedly installed on the upper surface of the graphene thermally conductive layer, the plurality of graphite thermally conductive pillars being linearly distributed at equal intervals, a graphite thermally conductive layer being fixedly connected between the top ends of the plurality of graphite thermally conductive pillars, a strong adhesive layer being bonded to the upper surface of the graphite thermally conductive layer by adhesive, a release film being attached to the outer surface of the strong adhesive layer, and an easy-tear strip being provided on one side of the outer wall of the release film.

[0006] Preferably, a tensile interlayer is provided between the graphene thermal conductive layer and the graphite thermal conductive layer, and the tensile interlayer has through holes adapted to the diameter and position of a plurality of graphite thermal conductive pillars.

[0007] Preferably, the tensile interlayer is provided with a plurality of reinforcing fibers, and the tensile interlayer is formed by interlacing the plurality of reinforcing fibers.

[0008] Preferably, the reinforcing fiber is glass fiber.

[0009] Preferably, the graphene thermal conductive layer is a graphene thermal conductive sheet, and the graphite thermal conductive layer is a graphite thermal conductive sheet.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention effectively improves the internal heat conduction of thermally conductive silicone pads, resulting in highly efficient heat conduction. Graphite's thermal conductivity can reach 700-1300 W / (mk), which is 2 to 3 times that of copper and 3 to 5 times that of aluminum. This high thermal conductivity means that graphite can transfer heat from the heat source to the heat dissipation area more quickly, thereby improving heat conduction and dissipation efficiency and effectively enhancing overall performance. Furthermore, graphite has a density of 0.85-1.9 g / cm³. 3 It is about 1 / 4 to 1 / 10 the weight of copper and 1 / 1.3 to 1 / 3 the weight of aluminum. This lightweight property makes graphite more convenient and economical to use, and it has a better performance.

[0012] Meanwhile, the tensile-resistant interlayer of this invention can effectively improve the internal tensile strength of the thermally conductive silicone sheet, giving it good tensile toughness. It will not easily break during actual use, thus improving the overall strength and practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal cross-sectional structure of the thermally conductive silicone sheet according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the planar structure of the inner cross-section of the thermally conductive silicone sheet according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure between the graphene thermal conductive layer and the graphite thermal conductive layer in an embodiment of this utility model.

[0016] Figure 4 This is a schematic diagram of the internal structure of the tensile interlayer in an embodiment of the present invention.

[0017] In the diagram: 1. Silicone substrate layer; 2. Graphene thermal conductive layer; 3. Graphite thermal conductive pillar; 4. Graphite thermal conductive layer; 5. Tensile interlayer; 501. Reinforcing fiber filament; 6. Strong adhesive layer; 7. Release film; 8. Easy-tear strip. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1-4 An embodiment of this utility model provides: a strong adhesive high-efficiency thermally conductive silicone sheet, comprising a silicone base layer 1, a graphene thermally conductive layer 2 fixedly connected to the upper surface of the silicone base layer 1, a plurality of graphite thermally conductive pillars 3 fixedly installed on the upper surface of the graphene thermally conductive layer 2, the plurality of graphite thermally conductive pillars 3 being linearly distributed at equal intervals, a graphite thermally conductive layer 4 fixedly connected between the top ends of the plurality of graphite thermally conductive pillars 3, a strong adhesive layer 6 being bonded to the upper surface of the graphite thermally conductive layer 4 by adhesive, the strong adhesive layer 6 being a strong adhesive used for strong adhesive bonding, a release film 7 being attached to the outer surface of the strong adhesive layer 6, and an easy-tear strip 8 being provided on one side of the outer wall of the release film 7;

[0022] Among them, graphene thermal conductive layer 2 is a graphene thermal conductive sheet, and graphite thermal conductive layer 4 is a graphite thermal conductive sheet.

[0023] Based on the above structure, the release film 7 can isolate the strong adhesive layer 6 from the outside, thus effectively preventing the strong adhesive layer 6 from sticking to the external structure. When it is necessary to bond the thermal conductive silicone sheet, the release film 7 can be peeled off by the easy-tear strip 8, so that the strong adhesive layer 6 can be used to complete the strong adhesive bonding of the thermal conductive silicone sheet, ensuring the normal use of the thermal conductive silicone sheet. The structure design of the easy-tear strip 8 makes it easy to manually peel off the release film 7, improving the convenience of the structure.

[0024] This invention utilizes a graphene thermal conductive layer 2, graphite thermal conductive pillars 3, and a graphite thermal conductive layer 4 within a thermally conductive silicone sheet. Heat conducted through the silicone substrate 1 is absorbed by the graphene thermal conductive layer 2 and then conducted to the graphite thermal conductive layer 4 via the graphite thermal conductive pillars 3. The graphite thermal conductive layer 4 then contacts the external heat dissipation structure, achieving heat conduction and dissipation. The use of these three layers effectively improves the internal heat conduction of the thermally conductive silicone sheet, resulting in highly efficient heat conduction. Graphite has a thermal conductivity of 700-1300 W / (mk), which is 2 to 3 times that of copper and 3 to 5 times that of aluminum. This high thermal conductivity means that graphite can transfer heat from the heat source to the heat dissipation area more quickly, thereby improving heat conduction and dissipation efficiency and enhancing overall performance. Furthermore, graphite has a density of 0.85-1.9 g / cm³. 3 It is about 1 / 4 to 1 / 10 the weight of copper and 1 / 1.3 to 1 / 3 the weight of aluminum. This lightweight property makes graphite more convenient and economical to use, and it has a better performance.

[0025] In this embodiment, please refer to the appendix to the specification for details. Figure 2 and attached Figure 4 As shown, a tensile interlayer 5 is provided between the graphene thermal conductive layer 2 and the graphite thermal conductive layer 4. The tensile interlayer 5 has through holes that are adapted to the diameter and position of several graphite thermal conductive pillars 3, so that the tensile interlayer 5 can be sleeved on the outside of several graphite thermal conductive pillars 3, which can increase the tensile effect of the silicone sheet while ensuring normal thermal conductivity.

[0026] Furthermore, the tensile interlayer 5 is provided with a number of reinforcing fiber filaments 501. The tensile interlayer 5 is woven together by the interlacing of the number of reinforcing fiber filaments 501, and the reinforcing fiber filaments 501 are glass fibers.

[0027] This structural design, through the addition of the tensile-resistant interlayer 5, effectively improves the internal tensile strength of the thermally conductive silicone sheet of this invention, giving it good tensile toughness. It will not easily break during actual use, thus improving the overall strength and practicality.

[0028] Working principle: When using this utility model, the release film 7 on the strong adhesive layer 6 can be peeled off by the easy-tear strip 8, so that the thermal conductive silicone sheet can be strongly adhered through the strong adhesive layer 6, ensuring the normal use of the thermal conductive silicone sheet. The structure design of the easy-tear strip 8 makes it easy to manually peel off the release film 7, improving the ease of use of the structure.

[0029] This invention utilizes a graphene thermal conductive layer 2, graphite thermal conductive pillars 3, and a graphite thermal conductive layer 4 within a thermally conductive silicone sheet. Heat conducted through the silicone substrate 1 is absorbed by the graphene thermal conductive layer 2 and then conducted to the graphite thermal conductive layer 4 via the graphite thermal conductive pillars 3. The graphite thermal conductive layer 4 then contacts the external heat dissipation structure, achieving heat conduction and dissipation. The use of these three layers effectively improves the internal heat conduction of the thermally conductive silicone sheet, resulting in highly efficient heat conduction. Graphite has a thermal conductivity of 700-1300 W / (mk), which is 2 to 3 times that of copper and 3 to 5 times that of aluminum. This high thermal conductivity means that graphite can transfer heat from the heat source to the heat dissipation area more quickly, thereby improving heat conduction and dissipation efficiency and enhancing overall performance. Furthermore, graphite has a density of 0.85-1.9 g / cm³. 3 It is about 1 / 4 to 1 / 10 the weight of copper and 1 / 1.3 to 1 / 3 the weight of aluminum. This lightweight property makes graphite more convenient and economical to use, and it has a better performance.

[0030] Meanwhile, the tensile-resistant interlayer of this invention can effectively improve the internal tensile strength of the thermally conductive silicone sheet, giving it good tensile toughness. It will not easily break during actual use, thus improving the overall strength and practicality.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A highly adhesive and efficient thermally conductive silicone sheet, comprising a silicone substrate layer (1), characterized in that, A graphene thermal conductive layer (2) is fixedly connected to the upper surface of the silicone base layer (1). A plurality of graphite thermal conductive pillars (3) are fixedly installed on the upper surface of the graphene thermal conductive layer (2). The plurality of graphite thermal conductive pillars (3) are linearly distributed at equal intervals. A graphite thermal conductive layer (4) is fixedly connected between the top ends of the plurality of graphite thermal conductive pillars (3). A strong adhesive layer (6) is bonded to the upper surface of the graphite thermal conductive layer (4) with glue. A release film (7) is attached to the outer surface of the strong adhesive layer (6). An easy-tear strip (8) is provided on one side of the outer wall of the release film (7).

2. The highly adhesive and efficient thermally conductive silicone sheet according to claim 1, characterized in that: A tensile interlayer (5) is provided between the graphene thermal conductive layer (2) and the graphite thermal conductive layer (4), and the tensile interlayer (5) has through holes adapted to the diameter and position of a plurality of graphite thermal conductive pillars (3).

3. The highly adhesive and efficient thermally conductive silicone sheet according to claim 2, characterized in that: The tensile interlayer (5) is provided with a number of reinforcing fiber filaments (501), and the tensile interlayer (5) is woven together by the interlacing of the number of reinforcing fiber filaments (501).

4. The highly adhesive and efficient thermally conductive silicone sheet according to claim 3, characterized in that: The reinforcing fiber filament (501) is glass fiber.

5. The highly adhesive and efficient thermally conductive silicone sheet according to claim 1, characterized in that: The graphene thermal conductive layer (2) is a graphene thermal conductive sheet, and the graphite thermal conductive layer (4) is a graphite thermal conductive sheet.

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