Composite heat dissipation adhesive tape

Abstract

The utility model discloses a composite heat dissipation adhesive tape, and relates to the technical field of heat dissipation materials. The adhesive tape comprises a release film layer, a first adhesive layer, a base material layer, a second adhesive layer, a heat dissipation layer and a protective layer which are sequentially stacked, the thickness of the protective layer is 3-5 [mu] m, and the protective layer is made of one of a polyurethane coating, a polyester coating and an epoxy coating; the surface of the protective layer is coated with carbon-based powder; the thickness of the heat dissipation layer is 5-30 [mu] m, and the material adopted by the heat dissipation layer is one of heat dissipation ceramic powder, boron nitride, carbon powder or graphene; the first adhesive layer is made of an acrylic pressure-sensitive adhesive or a polyurethane pressure-sensitive adhesive; the second adhesive layer is a UV (ultraviolet) type pressure-sensitive adhesive; and the base material layer is made of one of PET (Polyethylene Terephthalate), PI (Polyimide), copper foil or aluminum foil. By the adoption of the technical scheme, the scratch-resistant LED lamp has the advantages of being scratch-resistant and good in heat dissipation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation materials, in particular to a composite heat dissipation tape. Background Art

[0002] During the charging and discharging process of 3C electronic products, new energy batteries and other products, heat and hotness often occur. The greater the power, the more electrical energy will be converted into heat energy consumption. Excessive heat accumulation will not only affect the performance of the product, but will also seriously affect consumers' experience of using the product.

[0003] Therefore, adding tape with excellent heat dissipation properties to these products can effectively reduce heat accumulation within the product and mitigate the various negative effects caused by overheating. To ensure effective heat dissipation, existing heat dissipation tape structures all employ an outer heat dissipation layer, placing the heat dissipation material in direct contact with the heat source. However, this design can easily scratch or peel the tape's heat dissipation layer, further compromising heat dissipation performance and urgently requires improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a composite heat dissipation tape with the advantages of scratch resistance and good heat dissipation performance in view of the defects and shortcomings of the existing technology.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a composite heat dissipation tape, comprising: a release film layer, a first adhesive layer, a base material layer, a second adhesive layer, a heat dissipation layer and a protective layer stacked in sequence.

[0006] The utility model further provides that the thickness of the protective layer is 1-5 μm.

[0007] The utility model is further provided that the material used for the protective layer is one of polyurethane, polyester or epoxy coating.

[0008] The utility model is further provided that the surface of the protective layer is coated with a carbon-based powder layer.

[0009] The utility model is further provided that the thickness of the heat dissipation layer is 1-50 μm.

[0010] The utility model is further provided that the material used for the heat dissipation layer is one of heat dissipation ceramic powder, boron nitride, carbon powder or graphene.

[0011] The present invention is further provided that the material used for the first adhesive layer is acrylic pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

[0012] The present invention is further provided that the second adhesive layer is a UV pressure-sensitive adhesive.

[0013] The present invention further provides that the thickness of the second adhesive layer is 1-2 μm.

[0014] The utility model is further provided that the material used for the substrate layer is one of PET, PI, copper foil or aluminum foil.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the present invention, a protective layer is provided on the outside of the heat dissipation layer, thereby effectively protecting the heat dissipation layer, preventing the heat dissipation layer from being scratched, and ensuring the stability of the heat dissipation layer; the composite heat dissipation tape is scratch-resistant and has good heat dissipation performance.

[0017] 2. In the present invention, the thickness of the protective layer is 1-5μm. The moderate thickness can achieve 50 scratches without ink removal, and does not affect the heat dissipation effect. In addition, the material used for the protective layer is one of polyurethane, polyester or epoxy coating. Since polyurethane, polyester or epoxy has its own viscosity, it can be directly bonded to the heat dissipation layer. At the same time, the carbon-based powder is bonded, and the carbon-based powder itself has a certain heat dissipation capacity, so the protective layer also has a certain heat dissipation capacity. The carbon base itself has a certain hardness and scratch resistance, and after the polyurethane, polyester and epoxy are fully cured, they have a certain hardness and protective performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Explanation of reference numerals: 100, release film layer; 200, first adhesive layer; 300, substrate layer; 400, second adhesive layer; 500, heat dissipation layer; 600, protective layer. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0023] This embodiment provides a composite heat dissipation tape comprising: a release film layer 100, a first adhesive layer 200, a base material layer 300, a second adhesive layer 400, a heat dissipation layer 500, and a protective layer 600, which are stacked in sequence. The protective layer 600 is disposed outside the heat dissipation layer 500, effectively protecting the heat dissipation layer 500 from scratches and ensuring its stability. The composite heat dissipation tape is scratch-resistant and has excellent heat dissipation performance.

[0024] In some embodiments, the thickness of the protective layer 600 is 3-5 μm. The moderate thickness can prevent the ink from falling off after 50 scratches and does not affect the heat dissipation effect.

[0025] The material used for the protective layer 600 is one of polyurethane, polyester or epoxy coating. Since polyurethane, polyester or epoxy all have their own adhesiveness, they can be directly bonded to the heat dissipation layer 500; at the same time, a carbon-based powder layer is coated on the surface of the protective layer 600. The carbon-based powder itself has a certain heat dissipation capacity, so the protective layer 600 also has a certain heat dissipation capacity; and the carbon base itself has a certain hardness and scratch resistance, and after the polyurethane, polyester and epoxy are fully cured, they have a certain hardness and protective performance.

[0026] In some embodiments, the thickness of heat dissipation layer 500 is 1-50 μm, such as 1 μm, 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm. Heat dissipation layer 500 is made of one of heat dissipation ceramic powder, boron nitride, carbon powder, or graphene. Heat dissipation ceramic powder, boron nitride, carbon powder, or graphene all have excellent heat dissipation properties and can still provide sufficient heat dissipation even when covered with a 1-5 μm thick protective layer 600.

[0027] In some embodiments, the first adhesive layer 200 is a pressure-sensitive adhesive layer having a thickness of 5-50 μm, such as 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm. Furthermore, the material used is acrylic pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

[0028] In some embodiments, the second adhesive layer 400 is a primer layer having a thickness of 1-2 μm. Furthermore, a UV-type pressure-sensitive adhesive is used. If the second adhesive layer 400 is too thick, it will affect heat dissipation performance. If the second adhesive layer 400 is too thin, the adhesion will be insufficient. A thickness of 1-2 μm is just right to ensure a firm bond with the heat dissipation layer 500 without affecting heat dissipation performance.

[0029] In some embodiments, the thickness of the substrate layer 300 is 4.5-150 μm, such as 4.5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 80 μm, 100 μm, 120 μm, or 150 μm. Furthermore, the substrate layer 300 is made of PET, PI, copper foil, or aluminum foil.

[0030] In some embodiments, the release film layer 100 has a thickness of 25-50 μm, such as 25 μm, 30 μm, 40 μm, or 50 μm.

[0031] This composite heat dissipation tape was scratched with alcohol 50 times without any ink falling off; it was also pasted and torn off with a tape with a sticky force of 500g without any ink falling off.

[0032] Three specific embodiments are provided below:

[0033] Example 1:

[0034] Reference Figure 1 This embodiment provides a composite heat dissipation tape, including a release film layer 100, a pressure-sensitive adhesive layer, a substrate layer 300, a primer layer, a heat dissipation layer 500, and a protective layer 600 stacked in sequence.

[0035] The base material layer 300 is aluminum foil with a thickness of 20 μm.

[0036] The pressure-sensitive adhesive layer is acrylic pressure-sensitive adhesive with a thickness of 10 μm.

[0037] An acrylic pressure-sensitive adhesive layer was coated on the substrate layer 300 and placed in an oven at 100° C. for 3 minutes to remove the solvent, thereby obtaining an acrylic pressure-sensitive adhesive layer with a thickness of 10 μm.

[0038] The other side of the acrylic pressure-sensitive adhesive layer is covered with a release film layer 100 , and the thickness of the release film layer 100 is 25 μm.

[0039] On the other side of the substrate layer 300 , a UV pressure-sensitive adhesive primer layer is coated. The thickness of the primer layer is 2 μm.

[0040] A heat dissipation layer 500 is coated on the base coating layer. The heat dissipation material is ceramic powder and has a thickness of 25 μm.

[0041] A protective layer 600 made of polyurethane was coated on the heat dissipation layer 500 and placed in a 100° C. oven for 3 minutes to remove the solvent, thereby obtaining a protective layer 600 with a thickness of 5 μm. The surface of the protective layer 600 was coated with a carbon-based powder layer.

[0042] The composite heat dissipation tape provided in this embodiment has a total thickness of approximately 87 μm. Its acrylic pressure-sensitive adhesive layer exhibits a peel force of 592 gf / 25 mm, as measured by the national standard GB / T 2792-1998. It withstands alcohol abrasions with a 500 g weight for 50 cycles without any ink loss. The thermal insulation layer with the protective layer 600 is adhered to 3M Mylar tape, which exhibits no peeling or ink loss when peeled.

[0043] Example 2:

[0044] Also refer to Figure 1 This embodiment provides a composite heat dissipation tape, including a release film layer 100, a pressure-sensitive adhesive layer, a substrate layer 300, a primer layer, a heat dissipation layer 500, and a protective layer 600 stacked in sequence.

[0045] The base material layer 300 is copper foil with a thickness of 45 μm.

[0046] The pressure-sensitive adhesive layer is acrylic pressure-sensitive adhesive with a thickness of 25 μm.

[0047] An acrylic pressure-sensitive adhesive layer was coated on the substrate layer 300 and placed in an oven at 100° C. for 3 minutes to remove the solvent, thereby obtaining an acrylic pressure-sensitive adhesive layer with a thickness of 25 μm.

[0048] The other side of the acrylic pressure-sensitive adhesive layer is covered with a release film layer 100 , and the thickness of the release film layer 100 is 25 μm.

[0049] On the other side of the substrate layer 300 , a UV pressure-sensitive adhesive primer layer is coated. The thickness of the primer layer is 2 μm.

[0050] A heat dissipation layer 500 is coated on the base coating layer. The heat dissipation material is boron nitride and the thickness is 30 μm.

[0051] A protective layer 600 made of polyurethane was coated on the heat dissipation layer 500 and placed in a 100° C. oven for 3 minutes to remove the solvent, thereby obtaining a protective layer 600 with a thickness of 5 μm. The surface of the protective layer 600 was coated with a carbon-based powder layer.

[0052] The composite heat dissipation tape provided in this embodiment has a total thickness of approximately 132 μm. Its acrylic pressure-sensitive adhesive layer exhibits a peel force of 862 gf / 25 mm, as measured according to the national standard GB / T 2792-1998. It withstands alcohol abrasions with a 500 g weight for 50 cycles without any ink loss. Furthermore, the thermal insulation layer with the protective layer 600 is adhered to 3M Mylar tape, which exhibits no peeling or ink loss when peeled.

[0053] Example 3:

[0054] Also refer to Figure 1This embodiment provides a composite heat dissipation tape, including a release film layer 100, a pressure-sensitive adhesive layer, a substrate layer 300, a primer layer, a heat dissipation layer 500, and a protective layer 600 stacked in sequence.

[0055] The substrate layer 300 is made of PET and has a thickness of 4.5 μm.

[0056] The pressure-sensitive adhesive layer is acrylic pressure-sensitive adhesive with a thickness of 10 μm.

[0057] An acrylic pressure-sensitive adhesive layer was coated on the substrate layer 300 and placed in an oven at 100° C. for 3 minutes to remove the solvent, thereby obtaining an acrylic pressure-sensitive adhesive layer with a thickness of 10 μm.

[0058] The other side of the acrylic pressure-sensitive adhesive layer is covered with a release film layer 100 , and the thickness of the release film layer 100 is 25 μm.

[0059] On the other side of the substrate layer 300 , a UV pressure-sensitive adhesive primer layer is coated. The primer layer has a thickness of 1 μm.

[0060] A heat dissipation layer 500 is coated on the base coating layer. The heat dissipation material is a mixture of ceramic powder, boron nitride and graphene, and has a thickness of 30 μm.

[0061] A protective layer 600 made of polyurethane was coated on the heat dissipation layer 500 and placed in a 100° C. oven for 3 minutes to remove the solvent, thereby obtaining a protective layer 600 with a thickness of 5 μm. The surface of the protective layer 600 was coated with a carbon-based powder layer.

[0062] The composite heat dissipation tape provided in this embodiment has a total thickness of approximately 75.5 μm. Its acrylic pressure-sensitive adhesive layer exhibits a peel force of 488 gf / 25 mm, as measured by the national standard GB / T 2792-1998. It withstands alcohol abrasions with a 500 g weight for 50 cycles without any ink loss. Furthermore, the thermal insulation layer with the protective layer 600 is adhered to 3M Mylar tape, which exhibits no peeling or ink loss when peeled.

[0063] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A composite heat dissipation tape, characterized in that: include: A release film layer (100), a first adhesive layer (200), a substrate layer (300), a second adhesive layer (400), a heat dissipation layer (500), and a protective layer (600) are sequentially stacked.

2. The composite heat dissipation tape according to claim 1, characterized in that: The thickness of the protective layer (600) is 1-5 μm.

3. The composite heat dissipation tape according to claim 1, characterized in that: The material used for the protective layer (600) is one of polyurethane, polyester or epoxy coating.

4. The composite heat dissipation tape according to any one of claims 1 to 3, characterized in that: The surface of the protective layer (600) is coated with a carbon-based powder layer.

5. The composite heat dissipation tape according to claim 1, characterized in that: The heat dissipation layer (500) has a thickness of 1-50 μm.

6. The composite heat dissipation tape according to claim 1 or 5, characterized in that: The heat dissipation layer (500) is made of a material selected from the group consisting of heat dissipation ceramic powder, boron nitride, carbon powder, and graphene.

7. The composite heat dissipation tape according to claim 1, characterized in that: The material used for the first adhesive layer (200) is acrylic pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

8. The composite heat dissipation tape according to claim 1, characterized in that: The second adhesive layer (400) is a UV pressure-sensitive adhesive.

9. The composite heat dissipation tape according to claim 1 or 8, characterized in that: The thickness of the second adhesive layer (400) is 1-2 μm.

10. The composite heat dissipation tape according to claim 1, characterized in that: The material used for the substrate layer (300) is one of PET, PI, copper foil or aluminum foil.

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