Composite material with high strength, high viscosity and high thermal conductivity

Abstract

The utility model discloses a composite material with high strength, high viscosity and high thermal conductivity, which comprises a thermal conductive silica gel sheet, a first gum treating agent layer is arranged on one side of the thermal conductive silica gel sheet, and a second gum treating agent layer is arranged on the other side of the thermal conductive silica gel sheet. A first heat-conducting adhesive tape layer is arranged on one side, far away from the heat-conducting silica gel sheet, of the first gum treating agent layer, a second heat-conducting adhesive tape layer is arranged on one side, far away from the heat-conducting silica gel sheet, of the second gum treating agent layer, the first release layer is arranged on the outer side of the first heat-conducting adhesive tape layer, and the second release layer is arranged on the outer side of the second heat-conducting adhesive tape layer. According to the structure, the viscosity of the first heat-conducting adhesive tape layer and the second heat-conducting adhesive tape layer can be increased through the arrangement of the first back adhesive treating agent layer and the second back adhesive treating agent layer.

Description

Technical Field

[0001] The utility model relates to the field of thermal conductive tapes, in particular to a composite material with high strength, high viscosity and high thermal conductivity. Background Art

[0002] Currently, in the fields of electronics, automobiles, etc., when encountering heat conduction problems, the preferred solution is generally thermal conductive silicone sheets. The surface of thermal conductive silicone sheets is only slightly sticky, which is not enough to ensure that all thermal conductive silicone sheets will not shift or fall during installation and transportation. In addition, the tensile strength of thermal conductive silicone itself is very low, and it is easily damaged during installation, use or rework. To solve this problem, the surface of thermal conductive silicone sheets is treated with adhesive. The surface adhesive is generally made of acrylic tape with a base material, so that the surface has strong adhesion and will not shift or fall under harsh installation and transportation conditions. However, the thermal conductivity coefficient of PET acrylic tape is very low, resulting in the thermal conductivity coefficient of the overall thermal conductive silicone sheet composite material being only about 30% of the original thermal conductive silicone sheet, seriously affecting the heat dissipation of the product. Therefore, for such special application requirements, a thermal conductive silicone sheet that can meet the requirements of reinforcement, high viscosity, and heat dissipation is needed to ensure the normal installation, transportation, and heat dissipation of components, thereby maintaining the internal working environment of electronic and automotive products and providing guarantees for their normal stable operation and service life. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a composite material with high strength, high viscosity and high thermal conductivity, which has good high viscosity and heat dissipation effects.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a high-strength, high-viscosity and high-thermal conductivity composite material, including a thermally conductive silicone sheet, a first adhesive treatment agent layer is provided on one side of the thermally conductive silicone sheet, and a second adhesive treatment agent layer is provided on the other side of the thermally conductive silicone sheet, a first thermally conductive tape layer is provided on the side of the first adhesive treatment agent layer away from the thermally conductive silicone sheet, and a second thermally conductive tape layer is provided on the side of the second adhesive treatment agent layer away from the thermally conductive silicone sheet, and also includes a first release layer provided on the outside of the first thermally conductive tape layer and a second release layer provided on the outside of the second thermally conductive tape layer.

[0005] Furthermore, the first thermally conductive tape layer and the second thermally conductive tape layer are in strip, circle or cross shape.

[0006] Furthermore, the first thermally conductive tape layer and the second thermally conductive tape layer are thermally conductive adhesive layers.

[0007] Furthermore, the first thermally conductive tape layer and the second thermally conductive tape layer include a first substrate layer, and thermally conductive adhesive layers are respectively provided on both sides of the first substrate layer.

[0008] Furthermore, the first substrate layer is glass fiber cloth, non-woven fabric, PET film or PI film.

[0009] Furthermore, the thickness of the thermally conductive silicone sheet is 0.3 mm to 15 mm, and a second substrate layer is provided in the middle of the thermally conductive silicone sheet.

[0010] Furthermore, the thickness of the first thermally conductive tape layer and the second thermally conductive tape layer is 50um-200um.

[0011] The beneficial effects of the utility model are:

[0012] 1. In this structure, the first adhesive treatment agent layer and the second adhesive treatment agent layer can increase the viscosity of the first thermally conductive tape layer and the second thermally conductive tape layer.

[0013] 2. In this structure, the first thermally conductive tape layer and the second thermally conductive tape layer are designed to be strip-shaped, circular-shaped or cross-shaped, so that the thermally conductive silicone layer can be hollowed out, thereby fully exerting the thermal conductivity of the thermally conductive silicone layer.

[0014] 3. Designing the first thermally conductive tape layer and the second thermally conductive tape into a thermally conductive tape can improve the thermal conductivity of the entire composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a high-strength, high-viscosity, and high-thermal-conductivity composite material according to an embodiment of the present application.

[0016] Figure 2 Schematic diagram of the structure of the first thermally conductive tape layer and the second thermally conductive tape layer in an embodiment of the present application.

[0017] Marked in the figure are: first release layer 1, first thermal conductive tape layer 2, first base material layer 21, thermal conductive adhesive layer 22, first adhesive treatment agent layer 3, thermal conductive silicone sheet 4, second adhesive treatment agent layer 5, second thermal conductive tape layer 6, and second release layer 7. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] like Figure 1As shown, the embodiment of the present application discloses a high-strength, high-viscosity, and high-thermal-conductivity composite material, including a thermally conductive silicone sheet 4, a first adhesive treatment agent layer 3 is provided on one side of the thermally conductive silicone sheet 4, a second adhesive treatment agent layer 5 is provided on the other side of the thermally conductive silicone sheet 4, a first thermally conductive tape layer 2 is provided on the side of the first adhesive treatment agent layer 3 away from the thermally conductive silicone sheet 4, a second thermally conductive tape layer 6 is provided on the side of the second adhesive treatment agent layer 5 away from the thermally conductive silicone sheet 4, and further comprising a first release layer 1 provided on the outside of the first thermally conductive tape layer 2 and a second release layer 7 provided on the outside of the second thermally conductive tape layer 6;

[0020] The first thermally conductive tape layer 2 and the second thermally conductive tape layer 6 are in a strip shape, a circle shape, or a cross shape.

[0021] Specifically, it should be explained that the thermally conductive silicone sheet 4, adhesive treatment agent layer, and thermally conductive tape layer described above are all existing products, and this application does not make any improvements to their formulas.

[0022] Specifically, the thermally conductive silicone sheet 4 can be made into sheets of different thicknesses with slightly sticky surfaces using synthetic silicone oil, thermally conductive powder, additives and other materials through a certain process; the adhesive treatment agent can use Kangliban CL-14Y-9K processing solvent, which has a transparent to translucent appearance and a viscosity of about 50-100 CPS, which is convenient for spraying and brushing. During processing, the adhesive treatment agent can be applied to both sides of the thermally conductive silicone sheet 4 by spraying or brushing with a wool brush. After the adhesive treatment agent is dried, a adhesive treatment agent layer is formed, and then the first thermal conductive tape layer 2 and the second thermal conductive tape layer 6 are attached to the adhesive treatment agent layer.

[0023] During specific use, the first release layer 1 or the second release layer 7 is torn off, and the composite material is attached to the component. After attachment, the first thermal conductive tape layer 2 and the second thermal conductive tape layer 6 will be compressed. At the same time, since the first thermal conductive tape layer 2 and the second thermal conductive tape layer 6 are hollow structures, the thermal conductive silicone layer will directly contact the heat source, thereby exerting a good thermal conductivity effect.

[0024] This structure uses a thermally conductive silicone sheet 4 as a base material, the hardness of which can be made in the range of Shore 00: 20-90, and the thermal conductivity coefficient can generally be 1-15W / (m·K).

[0025] In this structure, the provision of the first adhesive treatment agent layer 3 and the second adhesive treatment agent layer 5 enhances the adhesiveness of the first thermally conductive tape layer 2 and the second thermally conductive tape layer 6. Furthermore, in this structure, the first thermally conductive tape layer 2 and the second thermally conductive tape layer 6 are designed in strip, zigzag, or cross shapes, thereby creating a hollowed-out thermal silicone layer and fully utilizing the thermal conductivity of the thermally conductive silicone layer.

[0026] In this embodiment, the first thermally conductive tape layer 2 and the second thermally conductive tape layer 6 are in two forms, one is a thermally conductive tape with a substrate, and the other is a thermally conductive tape without a substrate;

[0027] In a first embodiment, the first thermally conductive tape layer 2 and the second thermally conductive tape layer 6 are thermally conductive adhesive layers 22 .

[0028] Among them, the second embodiment is: the first thermal conductive tape layer 2 and the second thermal conductive tape layer 6 include a first substrate layer 21, and thermal conductive adhesive layers 22 are respectively provided on both sides of the first substrate layer 21. The first substrate layer 21 is glass fiber cloth, non-woven fabric, PET film or PI film.

[0029] The thermal conductivity of the thermally conductive adhesive in this structure is generally 0.1-1.5W / (m·K), and the peel force is generally 500-2000gf / 25.4mm. Designing the first thermally conductive tape layer 2 and the second thermally conductive tape as thermally conductive tapes can improve the thermal conductivity of the entire composite material.

[0030] In this embodiment, the thickness of the thermally conductive silicone sheet 4 is 0.3 mm to 15 mm, for example, 0.3 mm, 1 mm, 5 mm, 10 mm, 15 mm, etc. A second substrate layer is provided in the middle of the thermally conductive silicone sheet 4 .

[0031] Specifically, the second base material layer may be a mesh glass fiber cloth. The provision of the mesh glass fiber cloth can enhance the strength of the thermally conductive silicone sheet 4 .

[0032] In this embodiment, the thickness of the first thermal conductive tape layer 2 and the second thermal conductive tape layer 6 is 50um-200um, specifically 50um, 100um, 200um, etc., and can be a thermal conductive adhesive with no substrate, a glass fiber substrate, a non-woven fabric substrate or a thermal conductive adhesive with other types of substrates.

[0033] In summary, it has excellent thermal conductivity, insulation and aging resistance. The adhesive backing of the thermal conductive tape can be selected in different areas and shapes, which increases the strength and viscosity while also reducing the adhesive area. The overall combination can be combined into different size requirements. It has high strength, high viscosity and high thermal conductivity, and is very good for conduction at the heat source.

[0034] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite material with high strength, high viscosity and high thermal conductivity, characterized by: The invention comprises a heat-conducting silicone sheet (4), wherein a first adhesive treatment agent layer (3) is provided on one side of the heat-conducting silicone sheet (4), a second adhesive treatment agent layer (5) is provided on the other side of the heat-conducting silicone sheet (4), a first heat-conducting tape layer (2) is provided on the side of the first adhesive treatment agent layer (3) away from the heat-conducting silicone sheet (4), and a second heat-conducting tape layer (6) is provided on the side of the second adhesive treatment agent layer (5) away from the heat-conducting silicone sheet (4), and further comprises a first release layer (1) provided on the outside of the first heat-conducting tape layer (2) and a second release layer (7) provided on the outside of the second heat-conducting tape layer (6); The first thermally conductive adhesive tape layer (2) and the second thermally conductive adhesive tape layer (6) are in the shape of strips, a circle or a cross.

2. The high-strength, high-viscosity, and high-thermal-conductivity composite material according to claim 1, wherein: The first thermally conductive adhesive tape layer (2) and the second thermally conductive adhesive tape layer (6) are thermally conductive adhesive layers (22).

3. The high-strength, high-viscosity, and high-thermal-conductivity composite material according to claim 1, wherein: The first thermally conductive adhesive tape layer (2) and the second thermally conductive adhesive tape layer (6) comprise a first substrate layer (21), and thermally conductive adhesive layers (22) are respectively provided on both sides of the first substrate layer (21).

4. The high-strength, high-viscosity, and high-thermal-conductivity composite material according to claim 3, wherein: The first substrate layer (21) is glass fiber cloth, non-woven fabric, PET film or PI film.

5. The high-strength, high-viscosity, and high-thermal-conductivity composite material according to claim 1, wherein: The thickness of the thermally conductive silicone sheet (4) is 0.3 mm to 15 mm, and a second substrate layer is provided in the middle of the thermally conductive silicone sheet (4).

6. The high-strength, high-viscosity, and high-thermal-conductivity composite material according to claim 1, wherein: The thickness of the first thermally conductive tape layer (2) and the second thermally conductive tape layer (6) is 50 μm-200 μm.

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