Environment-friendly conductive coating

Abstract

The utility model discloses an environment-friendly conductive coating and relates to the technical field of conductive coatings. The environment-friendly conductive coating comprises a base layer, the upper surface of the base layer is bonded with a bottom layer, the outer layer of the bottom layer is bonded with a protective layer, the protective layer comprises a scratch-resistant layer, a first bonding layer and an anti-corrosion layer, the scratch-resistant layer is bonded on the outer side of the first bonding layer, the anti-corrosion layer is bonded on the inner side of the first bonding layer, and the first bonding layer is bonded on the outer side of the anti-corrosion layer. By means of the scratch-resistant layer, the possibility that a sharp object passes through the conductive coating when scratching the circuit board is reduced, so that the situation that the sharp object is directly contacted with the circuit board to cause scratch, so that an internal circuit of the circuit board is broken to cause failure to be unable to use and even short circuit is avoided, and the safety is effectively improved; the problem of fault or short circuit caused by corrosion of an internal circuit of the circuit board due to residual water on the surface is solved through the corrosion-resistant layer, and meanwhile, the scratch-resistant layer and the corrosion-resistant layer are integrated by means of the first bonding layer.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive coatings, and particularly relates to an environment-friendly conductive coating. Background Art

[0002] A conductive coating is a thin film or coating with certain conductivity applied on the surface of an insulating material. There are mainly two types of conductive coatings: one is the blended type, and the other is the transparent thin film type.

[0003] Conductive coatings are generally used for the protection of circuit boards. However, the existing conductive coatings have insufficient protection ability. Once a sharp object directly contacts the circuit board, it is very likely to cut through the conductive coating and cause scratches to the circuit board, which may further lead to the breakage of the internal circuit of the circuit board, resulting in the failure of the circuit board and making it unusable. In view of this, we have proposed an environment-friendly conductive coating. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide an environment-friendly conductive coating, which can solve the problem that when a sharp object directly contacts the circuit board, it is very likely to cut through the conductive coating and cause scratches to the circuit board.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an environment-friendly conductive coating, including a base layer, a bottom layer is adhesively bonded to the upper surface of the base layer, and a protective layer is adhesively bonded to the outer layer of the bottom layer. The protective layer includes a scratch-resistant layer, a first adhesive layer and an anti-corrosion layer. The scratch-resistant layer is adhesively bonded to the outside of the first adhesive layer, and the anti-corrosion layer is adhesively bonded to the inside of the first adhesive layer.

[0006] Preferably, the bottom layer includes a second adhesive layer, a conductive copper foil layer and a third adhesive layer, and the third adhesive layer is adhesively bonded to the upper surface of the base layer.

[0007] Preferably, the conductive copper foil layer is adhesively bonded to the outside of the third adhesive layer.

[0008] Preferably, the upper and lower sides of the second adhesive layer are respectively adhesively bonded to the anti-corrosion layer and the conductive copper foil layer.

[0009] Preferably, through grooves extending out of its lower surface are formed on the upper surface of the conductive copper foil layer.

[0010] Preferably, connecting protrusions are respectively fixedly connected to the surfaces of the second adhesive layer and the third adhesive layer close to each other.

[0011] Preferably, both of the two connecting protrusions extend into the inside of the through groove.

[0012] Preferably, a color adjustment coating is applied on the upper surface of the scratch-resistant layer.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The environmentally friendly conductive coating uses a protective layer composed of a scratch-resistant layer and an anti-corrosion layer for the first layer of protection. By means of the scratch-resistant layer, the possibility of passing through the conductive coating when scratched by a sharp object is reduced, thereby avoiding scratches caused by direct contact between the sharp object and the circuit board, preventing the internal circuit of the circuit board from breaking and resulting in malfunction or even short circuit, effectively improving safety. And through the anti-corrosion layer, problems such as corrosion of the internal circuit of the circuit board caused by residual moisture on the surface leading to malfunction or short circuit are reduced. At the same time, the scratch-resistant layer and the anti-corrosion layer are made into a whole by means of the first adhesive layer.

[0015] (2) The environmentally friendly conductive coating changes the appearance color of the conductive coating by formulating a color-tuning coating, which is conducive to subsequent identification. At the same time, the base layer, the bottom layer and the protective layer are connected by means of the second adhesive layer and the third adhesive layer. With the through slots provided on the conductive copper foil layer, when scratched by a sharp object, the object makes hard contact with the conductive copper foil layer through the through slots instead of sliding across the outer surface of the conductive copper foil layer, reducing the movement speed and the overall displacement length of the scratched object, thereby protecting the protruding components on the circuit board. And because the through slots are small and not large enough to support objects such as screwdrivers to pass through, the injury caused by stabbing can also be reduced. At the same time, the conductive copper foil layer also has a certain conductive function. Description of the Drawings

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0017] Figure 1 It is a schematic structural diagram of an environmentally friendly conductive coating of the present utility model;

[0018] Figure 2 It is a schematic diagram of the protective layer of the present utility model;

[0019] Figure 3 It is a schematic diagram of the bottom layer of the present utility model;

[0020] Figure 4 It is a schematic plan view of the bottom layer of the present utility model.

[0021] Reference numerals: 1, base layer; 2, bottom layer; 3, protective layer; 4, scratch-resistant layer; 5, first adhesive layer; 6, anti-corrosion layer; 7, second adhesive layer; 8, conductive copper foil layer; 9, third adhesive layer; 10, through slot; 11, protrusion; 12, color-tuning coating. Detailed Embodiments

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that when it comes to orientation descriptions, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0024] In the description of the present utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0026] Please refer to Figures 1-4 , the present utility model provides a technical solution: an environmentally friendly conductive coating, including a base layer 1. The upper surface of the base layer 1 is bonded with a bottom layer 2, and the outer layer of the bottom layer 2 is bonded with a protective layer 3. The protective layer 3 includes a scratch-resistant layer 4, a first bonding layer 5, and an anti-corrosion layer 6. The scratch-resistant layer 4 is bonded to the outside of the first bonding layer 5, and the anti-corrosion layer 6 is bonded to the inside of the first bonding layer 5. The protective layer 3 composed of the scratch-resistant layer 4 and the anti-corrosion layer 6 is used for the first layer of protection. By means of the scratch-resistant layer 4, the possibility of passing through the conductive coating when scratched by a sharp object is reduced, thereby avoiding scratches caused by direct contact between the sharp object and the circuit board, preventing the internal circuit of the circuit board from breaking and resulting in a malfunction or even a short circuit, effectively improving safety. And by means of the anti-corrosion layer 6, the problem of corrosion of the internal circuit of the circuit board caused by residual moisture on the surface resulting in a malfunction or short circuit is reduced. At the same time, by means of the first bonding layer 5, the scratch-resistant layer 4 and the anti-corrosion layer 6 are made into a whole.

[0027] Furthermore, the bottom layer 2 includes a second adhesive layer 7, a conductive copper foil layer 8 and a third adhesive layer 9. The third adhesive layer 9 is bonded to the upper surface of the base layer 1, the conductive copper foil layer 8 is bonded to the outside of the third adhesive layer 9, and the upper and lower sides of the second adhesive layer 7 are respectively bonded to the anti-corrosion layer 6 and the conductive copper foil layer 8. A through groove 10 extending out of its lower surface is formed on the upper surface of the conductive copper foil layer 8. Connecting protrusions 11 are fixedly connected to the surfaces of the second adhesive layer 7 and the third adhesive layer 9 close to each other, and both of the two connecting protrusions 11 extend into the interior of the through groove 10. A color adjustment coating 12 is coated on the upper surface of the scratch-resistant layer 4. In the text, the scratch-resistant layer 4 is made of polyurethane paint, so that the whole has excellent properties such as low film-forming temperature, strong adhesion, good wear resistance, high hardness, good chemical resistance and weather resistance. The anti-corrosion layer 6 is made of polytetrafluoroethylene, so that the whole has excellent corrosion resistance. The first adhesive layer 5, the second adhesive layer 7 and the third adhesive layer 9 are all made of waterborne polyurethane resin, so that the conductive coating has the advantages of non-combustibility, small odor, no environmental pollution, energy saving, convenient operation, easy cleaning of residual glue, etc. At the same time, the viscosity can be adjusted by a thickening agent and water, and the appearance color of the conductive coating can be changed by preparing the color adjustment coating 12, so as to facilitate subsequent identification. At the same time, the base layer 1, the bottom layer 2 and the protective layer 3 are connected by means of the second adhesive layer 7 and the third adhesive layer 9, and by means of the through groove 10 formed on the conductive copper foil layer 8, when a sharp object scratches, the through groove 10 enables the object to have a hard contact with the conductive copper foil layer 8, rather than sliding across the outer surface of the conductive copper foil layer 8, reducing the movement speed of the scratching object and the overall displacement length, thereby protecting the protruding components on the circuit board. Moreover, since the through groove 10 is small and not large enough to support objects such as screwdrivers to pass through, the injury during stabbing can also be reduced. At the same time, the conductive copper foil layer 8 also has a certain conductive function.

[0028] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An environmentally friendly conductive coating, comprising a base layer (1), characterized in that: The upper surface of the base layer (1) is bonded with a bottom layer (2), the outer layer of the bottom layer (2) is bonded with a protective layer (3), the protective layer (3) comprises a scratch-resistant layer (4), a first adhesive layer (5) and an anti-corrosion layer (6), the scratch-resistant layer (4) is bonded to the outer side of the first adhesive layer (5), and the anti-corrosion layer (6) is bonded to the inner side of the first adhesive layer (5).

2. The environmentally friendly conductive coating according to claim 1, characterized in that: The bottom layer (2) comprises a second adhesive layer (7), a conductive copper foil layer (8) and a third adhesive layer (9), and the third adhesive layer (9) is bonded to the upper surface of the base layer (1).

3. The environmentally friendly conductive coating according to claim 2, characterized in that: The conductive copper foil layer (8) is bonded to the outer side of the third bonding layer (9).

4. The environmentally friendly conductive coating according to claim 2, characterized in that: The upper and lower sides of the second bonding layer (7) are bonded to the anti-corrosion layer (6) and the conductive copper foil layer (8) respectively.

5. The environmentally friendly conductive coating according to claim 4, characterized in that: The upper surface of the conductive copper foil layer (8) is provided with a through groove (10) extending from the lower surface thereof.

6. The environmentally friendly conductive coating according to claim 4, characterized in that: A connection protrusion (11) is fixedly connected to the surface of one side of the second adhesive layer (7) adjacent to the third adhesive layer (9).

7. The environmentally friendly conductive coating according to claim 6, characterized in that: The two connecting protrusions (11) both extend into the interior of the through groove (10).

8. The environmentally friendly conductive coating according to claim 1, characterized in that: The upper surface of the scratch-resistant layer (4) is coated with a tinting coating (12).

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