Low-loss copper-clad plate

Abstract

The utility model belongs to the technical field of copper-clad plates, and particularly relates to a low-loss copper-clad plate which comprises a base layer and two copper foil layers, semi-solidified layers are arranged on two sides of the base layer, the two copper foil layers are respectively and fixedly pressed on two sides of the base layer through the semi-solidified layers, the base layer comprises a composite single layer, and the composite single layer is arranged between the two copper foil layers. A plurality of composite single layers are arranged, the composite single layers are fixedly bonded, reinforcing coatings are fixedly bonded to one side of the uppermost composite single layer and one side of the lowermost composite single layer, and each composite single layer comprises weft yarn and warp yarn. According to the utility model, the composite single layer is prepared by compounding the glass fibers and the carbon fibers, so that the strength of the composite single layer is improved, the breakage rate and the cracking rate of the copper-clad plate are reduced in the subsequent processing process of the copper-clad plate, further the processing loss of the copper-clad plate is reduced, and the number of the carbon fiber warps is reasonably used according to the use requirements of copper cladding; and the production cost of the copper-clad plate is reduced while the use requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper clad laminates, and in particular relates to a low-loss copper clad laminate. Background Art

[0002] Copper clad laminate is an important electronic material and an important substrate for printed circuit boards (PCBs). It is composed of copper foil and substrate, with the copper foil covering one side of the substrate and the other side being a bare substrate or a substrate coated with glue. The main function of copper clad laminate is to provide a conductive base on the printed circuit board for printing circuit patterns on it. It can also serve as a mechanical support for the circuit board to protect the circuit from the influence of the external environment.

[0003] Commonly used copper clad laminates often use wood pulp paper, glass fiber cloth and other materials as their base layer. These materials have low mechanical strength and are prone to cracking and breakage during subsequent processing, which increases the loss of the copper clad laminates. Some high-end copper clad laminates use carbon fiber as their base layer, but their price and cost are high, and their hardness is too high, making subsequent processing difficult. Utility Model Content

[0004] The purpose of the present invention is to provide a low-loss copper clad laminate to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a low-loss copper-clad laminate, comprising a base layer and a copper foil layer, the copper foil layer having two layers, semi-cured layers being provided on both sides of the base layer, the two copper foil layers being fixedly pressed on both sides of the base layer through the semi-cured layers, the base layer comprising a composite single layer, the composite single layer having several layers, the several composite single layers being fixedly bonded, and a reinforcing coating being fixedly bonded on one side of the top composite single layer and the bottom composite single layer.

[0006] Furthermore, the composite single layer includes wefts and warps, and there are a plurality of wefts and warps, and the plurality of wefts and warps are arranged in a "well" shape.

[0007] Furthermore, the material of the weft is glass fiber, the material of part of the warp is carbon fiber, and the material of another part of the warp is glass fiber.

[0008] Furthermore, the carbon fiber warps are arranged at equal distances, and an equal number of glass fiber warps are arranged between every two adjacent carbon fiber warps.

[0009] Furthermore, the number of glass fiber warps between two adjacent carbon fiber warps is 0-5.

[0010] Furthermore, the material of the reinforcement coating is one of epoxy resin, polyurethane or acrylic acid.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the composite single layer is made by compounding glass fiber and carbon fiber, which improves the strength of the composite single layer, reduces the breakage rate and cracking rate of the copper clad laminate during the subsequent processing of the copper clad laminate, and thus reduces the loss of the copper clad laminate processing. According to the use requirements of the copper clad, the number of carbon fiber warp yarns is reasonably used, and the production cost of the copper clad laminate is reduced while meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 For this utility model Figure 1 Schematic diagram of the enlarged structure of the part A in the middle;

[0014] Figure 3 This is a schematic diagram of the surface enlarged structure of the composite single layer of the utility model Figure 1 ;

[0015] Figure 4 This is a schematic diagram of the surface enlarged structure of the composite single layer of the utility model Figure 2 .

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] 1. Base layer; 11. Composite single layer; 12. Reinforcement coating; 13. Weft; 14. Warp; 2. Copper foil layer; 3. Semi-cured layer. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0019] like Figure 1 and 2 As shown, a low-loss copper clad laminate includes a base layer 1 and a copper foil layer 2. The copper foil layer 2 has two layers. Semi-cured layers 3 are provided on both sides of the base layer 1. The two copper foil layers 2 are fixedly pressed on both sides of the base layer 1 through the semi-cured layers 3. The base layer 1 includes a composite single layer 11. The composite single layer 11 has several layers. The several composite single layers 11 are fixedly bonded. A reinforcing coating 12 is fixedly bonded to one side of the uppermost composite single layer 11 and the lowermost composite single layer 11.

[0020] According to the above structure, the base layer 1 of the copper clad laminate is made of several composite single layers 11 that are glued together. The several composite single layers 11 are made by compounding glass fiber and carbon fiber, which improves the strength of the composite single layer 11. In the subsequent processing of the copper clad laminate, the breakage rate and cracking rate of the copper clad laminate are reduced, thereby reducing the loss of the copper clad laminate processing. The setting of the strengthening coating 12 can further improve the overall mechanical strength of the base layer 1 and further reduce the loss rate of the copper clad laminate processing.

[0021] like Figure 3-4 As shown, the composite single layer 11 includes a weft 13 and a warp 14. There are a plurality of wefts 13 and a plurality of warp 14, which are arranged in a "well" shape. The material of the weft 13 is glass fiber, the material of some warp 14 is carbon fiber, and the material of the other part of the warp 14 is glass fiber.

[0022] According to the above structure, the composite single layer 11 is woven from weft yarns 13 and warp yarns 14. The carbon fiber warp yarns 14 can improve the overall mechanical strength of the composite single layer 11 and reduce the fracture and breakage rate of the copper clad laminate during subsequent processing.

[0023] like Figure 3 and 4 As shown, the carbon fiber warps 14 are arranged at equal intervals, and an equal number of glass fiber warps 14 are arranged between every two adjacent carbon fiber warps 14 , and the number of glass fiber warps 14 between every two adjacent carbon fiber warps 14 is 0-5.

[0024] According to the above structure, the number of carbon fiber warp yarns 14 can be reasonably used according to the use requirements of the copper clad plate, thereby reducing the production cost of the copper clad plate while meeting the use requirements.

[0025] like Figure 2 As shown, in order to improve the weather resistance and corrosion resistance of the base layer 1 as a whole, the material of the reinforcing coating 12 is one of epoxy resin, polyurethane or acrylic acid.

[0026] The working principle of the present invention is as follows: the base layer 1 of the copper clad laminate is made of a plurality of composite single layers 11 that are glued together, and the plurality of composite single layers 11 are composited by glass fiber and carbon fiber, which improves the strength of the composite single layer 11. In the subsequent processing of the copper clad laminate, the breakage rate and cracking rate of the copper clad laminate are reduced, thereby reducing the loss of the copper clad laminate processing. The setting of the reinforced coating 12 can further improve the overall mechanical strength of the base layer 1 and further reduce the loss rate of the copper clad laminate processing. The composite single layer 11 is woven from weft yarns 13 and warp yarns 14 as a whole. The warp yarns 14 of carbon fiber can improve the overall mechanical strength of the composite single layer 11. In subsequent processing, the fracture and breakage rate of the copper clad laminate is reduced. The number of carbon fiber warp yarns 14 can be reasonably used according to the use requirements of the copper clad laminate, while meeting the use requirements and reducing the production cost of the copper clad laminate.

[0027] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A low-loss copper-clad laminate, comprising a base layer (1) and a copper foil layer (2), characterized in that: The copper foil layer (2) has two layers, and semi-cured layers (3) are provided on both sides of the base layer (1). The two copper foil layers (2) are fixedly pressed on both sides of the base layer (1) through the semi-cured layers (3). The base layer (1) includes a composite single layer (11), and the composite single layer (11) has several layers. Several composite single layers (11) are fixedly bonded, and one side of the uppermost composite single layer (11) and the lowermost composite single layer (11) are fixedly bonded with a reinforcing coating (12); The composite single layer (11) includes a weft (13) and a warp (14), and there are a plurality of wefts (13) and warp (14), and the plurality of wefts (13) and warp (14) are arranged in a "well" shape; The material of the weft (13) is glass fiber, the material of part of the warp (14) is carbon fiber, and the material of another part of the warp (14) is glass fiber.

2. The low-loss copper-clad laminate according to claim 1, characterized in that: The carbon fiber warps (14) are arranged at equal intervals, and an equal number of glass fiber warps (14) are arranged between every two adjacent carbon fiber warps (14).

3. The low-loss copper-clad laminate according to claim 2, characterized in that: The number of glass fiber warp yarns (14) between two adjacent carbon fiber warp yarns (14) is 0-5.

4. The low-loss copper-clad laminate according to claim 3, characterized in that: The material of the reinforcing coating (12) is one of epoxy resin, polyurethane or acrylic acid.

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