CN-224218730-U - Conductive silk screen based on nonmetallic substrate

Abstract

The utility model discloses a conductive wire mesh based on a nonmetallic substrate, which belongs to the technical field of conductive materials and comprises a wire mesh structure formed by spinning nonmetallic wires, wherein the nonmetallic wires are made of carbon fibers, and a conductive layer is arranged on the surface of the wire mesh structure. According to the conductive screen based on the nonmetallic substrate, through compounding of the carbon fiber screen structure and the conductive layer, excellent conductivity and electromagnetic shielding performance are obtained, and meanwhile, the conductive screen has the advantages of being smoother and smoother in surface and difficult to deform.

Inventors

• LIU HAIYAN
• LIU XIAOHAN

Assignees

• 德州安盾电子有限公司

Dates

Publication Date

20260508

Application Date

20250507

Claims (3)

1. 1. The conductive screen based on the nonmetallic substrate is characterized by comprising a screen structure formed by spinning nonmetallic wires, wherein the nonmetallic wires are made of carbon fibers, and a conductive layer is arranged on the surface of the screen structure, wherein the conductive layer is nickel carbide or comprises a surface layer and a plurality of layers of substrate layers, the surface layer is positioned on the surface of the outermost substrate layer, the surface layer is made of nickel, and the substrate layers comprise copper layers and iron layers which are sequentially arranged on the surface of the screen structure; The mesh number of the silk screen structure is 100-250 meshes, and the silk diameter of the carbon fiber is 20-30 mu m.
2. 2. The non-metal substrate based conductive screen of claim 1, wherein the conductive layer is formed using vapor deposition, electroplating, or magnetron sputtering.
3. 3. The non-metal substrate based conductive screen according to claim 1, wherein the woven form of the screen structure is plain weave formed by alternately stacking warp and weft threads perpendicular to each other.

Description

Conductive silk screen based on nonmetallic substrate Technical Field The utility model relates to a conductive wire mesh based on a nonmetallic substrate, and belongs to the technical field of conductive materials. Background The conductive silk screen has conductivity, electromagnetic shielding function and electromagnetic radiation prevention function, and is widely applied to the fields of military, electronics, medical treatment, communication and the like. At present, a common conductive wire mesh is formed by weaving metal wires, the metal wires are required to be wound for many times in the production process, and the problem of nonuniform performance of the conductive wire mesh at all positions due to local stretching deformation easily occurs. Secondly, the surface of the wire is rough, which can affect the smoothness of the product surface. Again, the conductive wire mesh formed by the wire braiding is prone to creasing when subjected to external forces, resulting in uneven products. In addition, the performance of the conductive wire mesh woven by the metal wires made of a single material is limited, and the conductive performance and the electromagnetic shielding performance of the product are affected. In order to improve the performance of the conductive wire mesh, a structure of adding another conductive material on the surface of the conductive wire mesh is developed, but the mesh hole diameter of the wire mesh structure obtained by spinning the metal wire is smaller, and the problem that the mesh hole is blocked by the conductive material easily occurs when other conductive materials are sprayed. The carbon fiber conductive cloth on the market at present is formed by spinning single carbon fiber, and the conductivity and electromagnetic shielding performance can not meet the use requirements of the military industry. Disclosure of utility model The utility model aims to solve the problems in the prior art, and provides a conductive silk screen based on a nonmetallic substrate, which has lighter weight, smoother and smoother surface and difficult deformation, and is conveniently prepared by coating processes such as spraying, magnetron sputtering, vapor deposition and the like. The utility model realizes the aim by adopting the following technical scheme: The conductive screen based on the nonmetallic substrate comprises a screen structure formed by spinning nonmetallic wires, wherein the nonmetallic wires are made of carbon fibers, and a conductive layer is arranged on the surface of the screen structure. In one embodiment, the conductive layer includes a surface layer and a plurality of layers of substrate layers, the surface layer is located on the surface of the outermost layer of substrate layers, the surface layer is made of nickel, and the substrate layers are made of any one of copper, iron, silver and aluminum. Preferably, the substrate layer comprises a copper layer and an iron layer which are sequentially arranged on the surface of the silk screen structure, and the iron layer can improve the shielding effect of the conductive silk screen on low-frequency electromagnetic waves. In another embodiment, the material of the conductive layer is nickel carbide. Wherein, nickel or nickel carbide is used as the outermost layer to improve the oxidation resistance of the conductive wire mesh. Optionally, the conductive layer is formed by vapor deposition, electroplating or magnetron sputtering. Optionally, the mesh number of the silk screen structure is 100-250 mesh, and the silk diameter of the carbon fiber is 20-30 mu m. Preferably, the silk screen structure is woven in a flat mode and is formed by alternately stacking warp yarns and weft yarns which are perpendicular to each other. The beneficial effects of the utility model include, but are not limited to: According to the conductive screen based on the nonmetallic substrate, through compounding of the carbon fiber screen structure and the conductive layer, excellent conductivity and electromagnetic shielding performance are obtained, and meanwhile, the conductive screen has the advantages of being smoother and smoother in surface and difficult to deform. Specifically, the conductive layer is plated on the surface of the silk screen structure formed by weaving carbon fibers, and the conductive layer is excellent in conductivity, so that the conductivity and electromagnetic shielding performance of the conductive silk screen are ensured. In particular, the carbon fiber not only has certain conductivity, but also has the advantage of high strength, compared with the metal wire, the conductive wire mesh has the advantages of smaller wire diameter, smaller density, smoother surface and difficult stretching deformation, so that the conductive wire mesh has the advantages of small thickness, lighter weight, smoother surface and difficult deformation, and secondly, on the premise of the same textile density, the carbon fiber can increase the