Heat-conducting silica gel sheet composite structure
By introducing a flame retardant layer and a graphite layer into the silicone film composite structure, and using connectors such as adhesive layer, joint assembly and interleaving assembly, the problem of degradation of thermal conductivity caused by colloid aging is solved, and the dual improvement of stability and thermal conductivity is achieved.
Patent Information
- Application Number
- CN202422066788.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The composite structure of existing thermally conductive silicone sheets is prone to form a colloidal layer due to colloid aging during use, resulting in a decrease in thermal conductivity.
The connecting parts between the top layer of silicone, the bottom layer of silicone and the composite core layer are designed, including a flame retardant layer and a graphite layer. The connecting parts of different structures such as adhesive layer, joint assembly and interleaving assembly are replaced by traditional large-area colloid adhesions to ensure the fastness and thermal conductivity of the composite structure.
It effectively reduces the formation of the colloidal layer, maintains the stability and thermal conductivity of the composite structure of the silicone film, and avoids adverse effects caused by colloid aging.
Smart Images
Figure CN223176036U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silica gel sheets, and more specifically, to a composite structure of a heat-conducting silica gel sheet. Background Art
[0002] The heat-conducting silica gel sheet is a heat-conducting medium material synthesized by using silica gel as the base material and adding various auxiliary materials such as metal oxides through a special process. In the industry, it is also called a heat-conducting silica gel pad, a heat-conducting silicon sheet, a flexible heat-conducting pad, a heat-conducting silica gel gasket, and so on.
[0003] Currently, the existing composite structure of the heat-conducting silica gel sheet usually uses a large-area application of adhesive for bonding and combination. However, after a period of use, the colloid will age and form a gum layer, which directly affects the heat dissipation between the silica gel sheet and the chip.
[0004] Therefore, we made improvements and proposed a composite structure of a heat-conducting silica gel sheet. Summary of the Utility Model
[0005] In order to solve the problem that the existing composite structure is likely to reduce the heat-conducting effect, the utility model provides a composite structure of a heat-conducting silica gel sheet.
[0006] The utility model is implemented as follows:
[0007] A composite structure of a heat-conducting silica gel sheet includes a silica gel top layer, a silica gel bottom layer, and a composite core layer. A connecting member is provided between the silica gel top layer and the silica gel bottom layer. The composite core layer is disposed inside the connecting member. The composite core layer includes a flame-retardant layer and a graphite layer. The top end of the flame-retardant layer is connected to the bottom end of the silica gel top layer. The bottom end of the graphite layer is connected to the top end of the silica gel bottom layer. The flame-retardant layer and the graphite layer are connected to each other.
[0008] Furthermore, the connecting member is a glue layer. The inner wall of the glue layer is sleeved and connected to the outer wall of the composite core layer. The two sides of the glue layer are respectively adhered to the sides of the silica gel top layer and the silica gel bottom layer.
[0009] The beneficial effect of adopting the above further scheme is that by using the connection of the silica gel top layer, the contact area with the composite core layer is reduced, so as to reduce the gum layer generated by subsequent aging, which is beneficial to maintaining good heat-conducting performance of the composite structure of the silica gel sheet.
[0010] Furthermore, the connecting member is a clamping assembly. The clamping assembly includes a "T"-shaped protrusion and a "T"-shaped groove. The two sides of the bottom end of the silica gel top layer are provided with "T"-shaped protrusions, and the two sides of the bottom end of the silica gel bottom layer are respectively provided with "T"-shaped grooves that are mutually clamped with the "T"-shaped protrusions.
[0011] The beneficial effect of adopting the above further solution is that by sliding the "T"-shaped bump inside the "T"-shaped groove, a detachable connection is achieved between the silicone top layer and the silicone bottom layer. At the same time, it is convenient to limit the composite core layer between the silicone top layer and the silicone bottom layer.
[0012] Further, the connecting member is set as an insertion assembly. The insertion assembly includes a first end cap, a pin shaft, and a second end cap. Both ends of the pin shaft penetrate through the four corners of the silicone top layer, the silicone bottom layer, and the composite core layer respectively, and are fixedly connected to one side of the first end cap and the second end cap respectively.
[0013] The beneficial effect of adopting the above further solution is that through the insertion and fixation of the pin shaft, the silicone top layer, the silicone bottom layer, and the composite core layer are kept in a fixed connection position. Then, through the fixing effect of the first end cap and the second end cap, it can effectively prevent the silicone top layer and the silicone bottom layer from separating from the upper and lower sides of the composite core layer.
[0014] Further, a first placement groove is opened on the adjacent side of the silicone top layer and the silicone bottom layer. The inner walls of the two first placement grooves are respectively attached to the outer wall of the composite core layer.
[0015] Further, a second placement groove is opened on the adjacent side of the silicone top layer and the silicone bottom layer. The second placement groove is located between the two sets of engaging components. The inner walls of the two second placement grooves are respectively attached to the outer wall of the composite core layer.
[0016] Further, through holes are respectively opened at the four corners of the composite core layer, and one end of the pin shaft is inserted and connected inside the through holes.
[0017] Further, the outer walls of the silicone top layer, the silicone bottom layer, and the composite core layer are flush with each other.
[0018] The beneficial effect of the present utility model is that by setting connecting members with different structures between the silicone top layer and the silicone bottom layer, the composite core layer can be stably placed between the two layers, thereby ensuring the tightness of the silicone sheet composite structure. And by replacing the traditional large-area colloid adhesion method, the adverse effects caused by the aging of the colloid to form a colloid layer are reduced. While maintaining the stability of the composite structure, a good heat conduction effect is also maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 A cross-sectional view of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0021] Figure 2 A schematic diagram of a first embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0022] Figure 3 A schematic diagram of a second embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0023] Figure 4 A schematic diagram of a third embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0024] Figure 5 A developed schematic diagram of a first embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0025] Figure 6 A developed schematic diagram of a second embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model;
[0026] Figure 7 A developed schematic diagram of a third embodiment of a thermal conductive silicone sheet composite structure provided by the present utility model.
[0027] In the figure: 100, silicone top layer; 200, silicone bottom layer; 300, composite core layer; 3001, flame retardant layer; 3002, graphite layer; 400, adhesive layer; 500, clamping component; 5001, "T"-shaped convex block; 5002, "T"-shaped groove; 600, interpenetrating component; 6001, first end cap; 6002, pin shaft; 6003, second end cap; 301, first placement groove; 302, second placement groove; 303, through hole. Specific embodiments
[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0029] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.
[0030] Please refer to Figure 1 , the present invention provides a technical solution: a heat-conducting silicone sheet composite structure, including a silicone top layer 100, a silicone bottom layer 200 and a composite core layer 300. There is a connecting member between the silicone top layer 100 and the silicone bottom layer 200, and the composite core layer 300 is arranged inside the connecting member. The composite core layer 300 includes a flame-retardant layer 3001 and a graphite layer 3002. The top end of the flame-retardant layer 3001 is connected to the bottom end of the silicone top layer 100, the bottom end of the graphite layer 3002 is connected to the top end of the silicone bottom layer 200, and the flame-retardant layer 3001 and the graphite layer 3002 are connected to each other. By arranging connecting members with different structures between the silicone top layer 100 and the silicone bottom layer 200, the composite core layer 300 can be stably placed between the two layers, thereby ensuring the tightness of the silicone sheet composite structure, and by replacing the traditional large-area colloid adhesion method, the adverse effects caused by the formation of a colloid layer due to colloid aging are reduced. While maintaining the stability of the composite structure, a good heat-conducting effect is also maintained.
[0031] Embodiment 1
[0032] Please refer to Figure 2 , as an embodiment of the present invention, further, the connecting member is set as an adhesive layer 400. The inner wall of the adhesive layer 400 is sleeved and connected to the outer wall of the composite core layer 300, and both sides of the adhesive layer 400 are adhered to the side edges of the silicone top layer 100 and the silicone bottom layer 200 respectively. Through the connection and use of the silicone top layer 100, the contact area with the composite core layer 300 is reduced, thereby reducing the colloid layer generated by subsequent aging, which is beneficial to maintaining the good heat-conducting performance of the silicone sheet composite structure.
[0033] Embodiment 2
[0034] Please refer to Figure 3, as an embodiment of the present utility model, further, the connecting member is provided as a clamping assembly 500. The clamping assembly 500 includes a "T"-shaped protrusion 5001 and a "T"-shaped groove 5002. The "T"-shaped protrusions 5001 are installed on both sides of the bottom end of the silica gel top layer 100, and the "T"-shaped grooves 5002 that are engaged with the "T"-shaped protrusions 5001 are respectively provided on both sides of the bottom end of the silica gel bottom layer 200. By sliding the "T"-shaped protrusion 5001 inside the "T"-shaped groove 5002, a detachable connection between the silica gel top layer 100 and the silica gel bottom layer 200 is achieved. At the same time, it is convenient to limit the composite core layer 300 between the silica gel top layer 100 and the silica gel bottom layer 200.
[0035] Embodiment III
[0036] Please refer to Figure 4 , as an embodiment of the present utility model, further, the connecting member is provided as an inserting assembly 600. The inserting assembly 600 includes a first end cap 6001, a pin shaft 6002, and a second end cap 6003. The two ends of the pin shaft 6002 respectively penetrate through the four corners of the silica gel top layer 100, the silica gel bottom layer 200, and the composite core layer 300, and are respectively fixedly connected to one side of the first end cap 6001 and the second end cap 6003. By the insertion and fixation of the pin shaft 6002, the silica gel top layer 100, the silica gel bottom layer 200, and the composite core layer 300 are maintained at fixed connection positions. Through the fixing effect of the first end cap 6001 and the second end cap 6003, it can effectively prevent the silica gel top layer 100 and the silica gel bottom layer 200 from separating from the upper and lower sides of the composite core layer 300.
[0037] Please refer to Figures 5 - 7 , further, a first placement groove 301 is provided on the adjacent side of the silica gel top layer 100 and the silica gel bottom layer 200. The inner walls of the two first placement grooves 301 are respectively in contact with the outer wall of the composite core layer 300. A second placement groove 302 is provided on the adjacent side of the silica gel top layer 100 and the silica gel bottom layer 200. The second placement groove 302 is located between two sets of clamping assemblies 500. The inner walls of the two second placement grooves 302 are respectively in contact with the outer wall of the composite core layer 300. Through holes 303 are respectively provided at the four corners of the composite core layer 300. One end of the pin shaft 6002 is inserted into the inside of the through holes 303. The outer walls of the silica gel top layer 100, the silica gel bottom layer 200, and the composite core layer 300 are flush with each other.
[0038] Specifically, the working principle of the heat-conducting silica gel sheet composite structure is as follows: during use, first check whether the composite structure is intact. After ensuring the integrity of the structure, then put it into use. By setting connectors with different structures between the silica gel top layer 100 and the silica gel bottom layer 200, namely the adhesive layer 400 of the frame structure, the clamping assembly 500 and the inserting assembly 600, the composite core layer 300 can be stably placed between the two layers, thus ensuring the tightness of the silica gel sheet composite structure. And by replacing the traditional large-area colloid adhesion method, the adverse effects caused by the formation of a colloid layer due to colloid aging are reduced. While maintaining the stability of the composite structure, a good heat-conducting effect is also maintained. Among them, through the connection and use of the silica gel top layer 100, the contact area with the composite core layer 300 is reduced, thus reducing the colloid layer generated by subsequent aging, which is beneficial to the silica gel sheet composite structure to maintain good heat-conducting performance. By sliding the "T"-shaped protrusion 5001 inside the "T"-shaped groove 5002, a detachable connection between the silica gel top layer 100 and the silica gel bottom layer 200 is realized. At the same time, it is convenient to limit the composite core layer 300 between the silica gel top layer 100 and the silica gel bottom layer 200. Through the insertion and fixation of the pin shaft 6002, the silica gel top layer 100, the silica gel bottom layer 200 and the composite core layer 300 are kept at fixed connection positions. Then, through the fixing effect of the first end cap 6001 and the second end cap 6003, it can effectively prevent the silica gel top layer 100 and the silica gel bottom layer 200 from separating from the upper and lower sides of the composite core layer 300.
[0039] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A composite structure of a heat-conducting silicone sheet, comprising a silicone top layer (100), a silicone bottom layer (200) and a composite core layer (300), characterized in that, A connecting piece is provided between the silica gel top layer (100) and the silica gel bottom layer (200). A composite core layer (300) is arranged inside the connecting piece. The composite core layer (300) includes a flame retardant layer (3001) and a graphite layer (3002). The top end of the flame retardant layer (3001) is connected to the bottom end of the silica gel top layer (100), the bottom end of the graphite layer (3002) is connected to the top end of the silica gel bottom layer (200), and the flame retardant layer (3001) and the graphite layer (3002) are connected to each other.
2. The thermally conductive silicone sheet composite structure according to claim 1, wherein The connecting piece is a glue layer (400). The inner wall of the glue layer (400) is sleeved and connected with the outer wall of the composite core layer (300), and both sides of the glue layer (400) are adhered to the sides of the silica gel top layer (100) and the silica gel bottom layer (200) respectively.
3. The thermally conductive silicone sheet composite structure according to claim 1, wherein, The connecting piece is a clamping component (500). The clamping component (500) includes a "T"-shaped protrusion (5001) and a "T"-shaped groove (5002). The two sides of the bottom end of the silica gel top layer (100) are provided with "T"-shaped protrusions (5001), and the two sides of the bottom end of the silica gel bottom layer (200) are respectively provided with "T"-shaped grooves (5002) that are mutually clamped with the "T"-shaped protrusions (5001).
4. The heat-conducting silicone sheet composite structure according to claim 1, wherein The connecting piece is an inserting component (600). The inserting component (600) includes a first end cap (6001), a pin shaft (6002) and a second end cap (6003). The two ends of the pin shaft (6002) respectively penetrate through the four corners of the silica gel top layer (100), the silica gel bottom layer (200) and the composite core layer (300), and are respectively fixedly connected to one side of the first end cap (6001) and the second end cap (6003).
5. The heat-conducting silicone sheet composite structure according to claim 2, wherein A first placement groove (301) is opened on the adjacent side of the silica gel top layer (100) and the silica gel bottom layer (200). The inner walls of the two first placement grooves (301) are respectively attached to the outer wall of the composite core layer (300).
6. The thermally conductive silicone sheet composite structure according to claim 3, characterized in that A second placement groove (302) is opened on the adjacent side of the silica gel top layer (100) and the silica gel bottom layer (200). The second placement groove (302) is located between two groups of the clamping components (500). The inner walls of the two second placement grooves (302) are respectively attached to the outer wall of the composite core layer (300).
7. The heat-conducting silicone sheet composite structure according to claim 4, characterized in that Through holes (303) are respectively opened at the four corners of the composite core layer (300). One end of the pin shaft (6002) is inserted and connected inside the through holes (303).
8. The heat-conducting silicone sheet composite structure according to claim 1, wherein The outer walls of the silica gel top layer (100), the silica gel bottom layer (200) and the composite core layer (300) are flush with each other.