A corrosion-resistant, low-thermal-resistance thermal grease

Abstract

This utility model relates to the field of thermal grease technology, and discloses a corrosion-resistant and low-thermal-resistance thermal grease, including a thermally conductive component disposed inside a protective box; two ultra-thin high-thermal-conductivity silicone films are pressed together at their edges to form a closed structure, and a cavity is disposed between the middle of the two ultra-thin high-thermal-conductivity silicone films. Several micropores are evenly distributed in the middle of the ultra-thin high-thermal-conductivity silicone films, and the cavity is filled with thermal grease. The thermal grease of this utility model, with its corrosion resistance and low thermal resistance, precisely matches the amount of thermal grease filled to the area of ​​the ultra-thin high-thermal-conductivity silicone films beforehand. Combined with the micropore extrusion design, it avoids the problem of excessive thermal grease usage seen in traditional application methods, and also prevents the thermal grease from accidentally rubbing onto other areas that do not require heat dissipation, reducing cleaning and maintenance costs, improving accuracy and cleanliness, and allowing for easy installation by simply peeling off the protective film, thus significantly improving assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of thermal grease technology, and in particular to a thermal grease with corrosion resistance and low thermal resistance. Background Technology

[0002] Thermal grease, commonly known as heat dissipation paste, is a thermally conductive silicone grease compound made primarily of silicone with added materials that have excellent heat resistance and thermal conductivity. It is used for heat conduction and dissipation in electronic components such as power amplifiers, transistors, electron tubes, and CPUs, thereby ensuring the stability of the electrical performance of electronic instruments and meters. Thermal grease is a material used to fill the gap between the CPU and the heat sink; this material is also known as a thermal interface material.

[0003] Existing thermal greases are usually sealed in syringes or bags. When using them, it is easy to apply too thickly and also easy to smear the thermal grease on other places, which is very inconvenient. Utility Model Content

[0004] The main purpose of this invention is to provide a thermally conductive grease with corrosion resistance and low thermal resistance, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a thermally conductive grease with corrosion resistance and low thermal resistance, comprising a thermally conductive component, wherein the thermally conductive component is disposed inside a protective box;

[0006] The thermal conductive component includes two ultra-thin high thermal conductivity silicone films, several micropores, cavities, and thermal grease. The edges of the two ultra-thin high thermal conductivity silicone films are pressed together to form a closed structure. The cavity is located between the middle of the two ultra-thin high thermal conductivity silicone films. Several micropores are evenly distributed in the middle of the ultra-thin high thermal conductivity silicone film (101), and the cavity is filled with thermal grease.

[0007] Preferably, a protective film is provided on the outer surface of the ultrathin high thermal conductivity silicone film.

[0008] Preferably, the pore size of the micropores ranges from 5 μm to 100 μm.

[0009] Preferably, the shape of the heat-conducting component is either rectangular or circular.

[0010] Preferably, the thickness of the ultrathin high thermal conductivity silicone film is in the range of 0.05μm to 0.1μm.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The composite structure of thermal grease and ultra-thin high thermal conductivity silicone film effectively reduces the air gap for heat conduction, enhances the contact area between the thermal grease and ultra-thin high thermal conductivity silicone film and the heating element, effectively reduces thermal resistance, and the ultra-thin high thermal conductivity silicone film and protective film isolate external corrosive media, thereby achieving a dual improvement in low thermal resistance and corrosion resistance; and it can be installed simply by peeling off the protective film, making the operation simple and effectively improving assembly efficiency.

[0013] 2. The amount of thermal grease inside is precisely matched to the area of ​​the ultra-thin high thermal conductivity silicone film. Combined with the microporous extrusion design, it avoids the problem of excessive thermal grease usage that is common with traditional application methods. It also prevents thermal grease from accidentally getting onto other parts that do not need heat dissipation, reducing cleaning and maintenance costs and improving the accuracy and cleanliness of use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a thermally conductive silicone grease with corrosion resistance and low thermal resistance according to the present invention.

[0015] Figure 2 This is a schematic diagram of the thermal conductive component structure of a corrosion-resistant and low thermal resistance thermal grease according to the present invention.

[0016] In the diagram: 1. Thermal conductive component; 101. Ultra-thin high thermal conductivity silicone film; 102. Micropores; 103. Cavity; 104. Thermal grease; 2. Protective film; 3. Protective box. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-2 As shown, a corrosion-resistant and low thermal resistance thermal grease includes a thermally conductive component 1, which is disposed inside a protective box 3. The protective box 3 is made of corrosion-resistant materials such as stainless steel or engineering plastics to wrap the thermally conductive component, forming a physical barrier to prevent the thermally conductive component 1 from being squeezed when not in use.

[0019] The thermal conductive component 1 includes two ultra-thin high thermal conductivity silicone films 101, several micropores 102, a cavity 103, and thermal grease 104. The edges of the two ultra-thin high thermal conductivity silicone films 101 are pressed together to form a closed structure. The edges of the two ultra-thin high thermal conductivity silicone films 101 are hot-pressed together to form a closed structure, preventing corrosive media from penetrating into the cavity 103 from the edges and avoiding contact between the thermal grease 104 and the external environment. The cavity 103 is located between the middle of the two ultra-thin high thermal conductivity silicone films 101. Several micropores 102 are evenly distributed in the middle of the ultra-thin high thermal conductivity silicone films 101, and the cavity 103 is filled with thermal grease 104.

[0020] A protective film 2 is provided on the outer surface of the ultra-thin high thermal conductivity silicone film 101. The protective film 2 covers the outer surface of the ultra-thin high thermal conductivity silicone film 101 and is usually made of chemically resistant inert materials such as polytetrafluoroethylene or siloxane coating. It can prevent moisture, acid / alkali gases, oil stains and other corrosive substances from directly contacting the ultra-thin high thermal conductivity silicone film 101 and avoid oxidation, swelling or degradation of the material.

[0021] The pore size of the micropore 102 ranges from 5μm to 100μm, which matches the size of the silicone grease particles from 1μm to 50μm. The silicone grease can be squeezed through the micropore 102 by external force, increasing the effective contact area with the contact surface and reducing the "dead volume" air.

[0022] The heat-conducting component 1 is either rectangular or circular in shape, adapting to the surface of objects of different shapes.

[0023] The thickness of the ultra-thin high thermal conductivity silicone film 101 ranges from 0.05μm to 0.1μm. The thickness of the ultra-thin high thermal conductivity silicone film 101 is only 0.05μm to 0.1μm, which is much lower than the thickness of traditional silicone grease. The reduction in thickness proportionally reduces the thermal resistance.

[0024] Working principle:

[0025] In its initial state, the heat-conducting component 1 consists of two ultra-thin, high-thermal-conductivity silicone films 101 with their edges pressed together to form an internal hollow structure. The cavity 103 is filled with thermally conductive silicone grease 104 of a suitable film area. A protective film 2 covers the surface of the ultra-thin, high-thermal-conductivity silicone film 101, providing protection against dust and impurities entering the micropores 102 and contaminating the thermally conductive silicone grease 104. This also maintains the cleanliness and performance stability of the ultra-thin, high-thermal-conductivity silicone film 101. When the heat-conducting component 1 is needed, first, peel off the protective film 2 from the outer surface of one ultra-thin, high-thermal-conductivity silicone film 101 and attach it to the surface of one of the objects requiring heat conduction. Then, peel off the other protective film 2. Finally, press the other object onto the heat-conducting component 1 and apply pressure to both objects. During this process, the thermally conductive silicone grease 104 filled in the cavity 103 is compressed under pressure. Under the action of the micropores 102, the thermal grease 104 is squeezed out. The squeezed thermal grease 104 and the ultra-thin high thermal conductivity silicone film 101 can accurately fill the gap between two objects, eliminating the air in the gap. Since air has extremely low thermal conductivity and is a poor conductor of heat, the thermal grease 104 and the ultra-thin high thermal conductivity silicone film 101 work together to replace the air in the gap, greatly reducing thermal resistance and significantly improving the heat conduction efficiency between objects, thereby achieving efficient heat dissipation. At the same time, the amount of thermal grease 104 pre-adapted to the area of ​​the ultra-thin high thermal conductivity silicone film 101, combined with the quantitative extrusion design of the micropores 102, ensures that the thermal grease 104 is squeezed out only in the area where the gap needs to be filled. This avoids waste caused by applying too much thermal grease 104 and prevents it from rubbing onto other non-heat dissipation parts, ensuring the accuracy and cleanliness of the use process.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat conducting silicone grease with corrosion resistance and low thermal resistance comprising a heat conducting component (1), characterized in that: The heat-conducting component (1) is disposed inside the protective box (3); The thermal conductive component (1) includes two ultra-thin high thermal conductivity silicone films (101), a number of micropores (102), a cavity (103), and thermal grease (104). The edges of the two ultra-thin high thermal conductivity silicone films (101) are pressed together to form a closed structure. The cavity (103) is located between the middle of the two ultra-thin high thermal conductivity silicone films (101). A number of micropores (102) are evenly distributed in the middle of the ultra-thin high thermal conductivity silicone film (101). The cavity (103) is filled with thermal grease (104).

2. The heat-conducting silicone grease with corrosion resistance and low thermal resistance according to claim 1, characterized in that: A protective film (2) is provided on the outer surface of the ultra-thin high thermal conductivity silicone film (101).

3. The heat-conducting silicone grease with corrosion resistance and low thermal resistance according to claim 1, characterized in that: The pore size of the micropore (102) ranges from 5 μm to 100 μm.

4. The heat-conducting silicone grease with corrosion resistance and low thermal resistance according to claim 1, characterized in that: The shape of the heat-conducting component (1) is either rectangular or circular.

5. The heat-conducting silicone grease with corrosion resistance and low thermal resistance according to claim 1, characterized in that: The thickness of the ultrathin high thermal conductivity silicone film (101) ranges from 0.05 μm to 0.1 μm.

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