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Production method of wire netting transparent electromagnetic shielding layer material

A technology of electromagnetic shielding layer and wire mesh, applied in metal material coating process, magnetic field/electric field shielding, electrical components, etc., to achieve high production efficiency and material utilization rate, low energy consumption, and broad application prospects

Inactive Publication Date: 2008-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current problem is how to reduce cost, improve performance, and achieve mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the wire mesh transparent electromagnetic shielding layer material comprises: pretreatment of the stretched mesh, the wire mesh and the resin film, putting the pretreated wire mesh into the corrosive liquid for corrosion or blackening treatment, and observing the metal mesh The color of the screen surface changes, and the blackness is adjusted by sodium polyacrylate in the corrosion solution. The blackness can vary with its content. The sodium polyacrylate is 0-2g / L; the surface leveling agent sodium lauryl sulfate is 1.5g / L L; Oxidant ammonium persulfate 4-5g / L, the rest is water, clean after corrosion, and then glue and cure the wire mesh.

Embodiment 2

[0024] The proportioning of the blackening liquid in the wire mesh treatment described in the above examples is: copper sulfate: 25~40g / L, selenium dioxide: 0.5~1.5g / L, ammonium persulfate: 4~5g / L , glacial acetic acid: 10-15g / L, sodium lauryl sulfate: 1.5g / L, it should be diluted 2-3 times with water before use, sulfuric acid can stabilize the pH value of the solution below 2, and is an auxiliary film-forming agent , the addition amount is 5-10g / L, and the pretreatment of the resin film includes removing the absorbed moisture of the PET resin film.

Embodiment 3

[0026] Gluing and curing of the wire mesh described in the above examples: place the film flat on a glass plate, and after coating the glue evenly on the film, place the corroded wire mesh on the glued film , and apply glue on the metal mesh, then cover it with another film, remove the air bubbles, and then press a glass plate on it, park it for 24 hours, wait for the glue to cure naturally or place it in a drying oven to cure.

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Abstract

The invention relates to a method for preparing a transparent electromagnet shielding layer material with a metal wire mesh. The shielding material comprises a surface electricity-conducting material and an electricity-conducting composite material. The method comprises steps that: stretching, the metal wire mesh and a resin film are pretreated; the pretreated metal wire mesh is put into a corrosive liquid for corrosion, namely, oxide treatment; the color change of the metal wire mesh is watched; the blackening is regulated by sodium polyacrylate in the corrosive liquid and changes with the content of the sodium polyacrylate; cleaning treatment is carried out after the corrosion and the metal wire mesh are gelatinized and cured; a film is laid flatly on a glass plate and evenly coated with the resin; the corroded metal wire mesh is laid on the resin-coated film, and then the metal wire mesh is coated with resin and covered with another film which is pressed with another glass plate after air bubbles are removed; then placing for 24 hours, the resin is cured naturally, or the curing is realized in a drying oven. The material produced by the method of the invention is applied to military technologies (for example: electronic warfare technology and stealth technology, safety products and various electronic products for civil use.

Description

Technical field: [0001] The invention relates to a preparation method of an electromagnetic shielding layer material, in particular to a preparation method of a wire mesh electromagnetic shielding layer material. Background technique: [0002] Electromagnetic wave pollution is the four major public hazards that threaten human existence after noise pollution, air pollution, and water pollution. In addition, the miniaturization and high integration of electronic components and the lightweight, high-speed, digital, and low signal level of electronic instruments and meters are susceptible to external electromagnetic interference and make them malfunction, resulting in serious consequences; engineering plastics are light in weight and difficult to process. Convenience, low cost, flexible shape design and more and more applications in electronic products. However, engineering plastics are prone to static electricity and hysteresis in the electromagnetic field, and have almost no ...

Claims

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Application Information

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IPC IPC(8): H05K9/00C23C22/48
Inventor 韩杰才张宇民周玉锋孟松鹤杜善义左洪波赫晓东
Owner HARBIN INST OF TECH
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