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Electromagnetic shielding and laser eavesdropping blocking two-in-one film and preparation method thereof

A technology of electromagnetic shielding and electromagnetic shielding layer, which is applied in the field of electromagnetic shielding, laser eavesdropping and blocking two-in-one film and its preparation, can solve the problems of inconvenient construction, shortened life, and affecting normal lighting, etc., and achieves simple structure, reduced use, and improved Effect of Visible Light Transmittance

Pending Publication Date: 2021-11-12
三千新材料苏州有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide an electromagnetic shielding laser eavesdropping blocking two-in-one film and its preparation method, which is used to solve the inconvenience of construction of the laser eavesdropping blocking film and the electromagnetic shielding film on the inner and outer sides of the glass in the prior art. The problem of shortened lifespan, and at the same time solve the problem that the two layers of film are relatively dark and affect the normal lighting

Method used

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  • Electromagnetic shielding and laser eavesdropping blocking two-in-one film and preparation method thereof
  • Electromagnetic shielding and laser eavesdropping blocking two-in-one film and preparation method thereof
  • Electromagnetic shielding and laser eavesdropping blocking two-in-one film and preparation method thereof

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Embodiment 1

[0035] A method for preparing an electromagnetic shielding laser eavesdropping blocking two-in-one film, comprising the following steps:

[0036] (1) coating a scratch-resistant layer on one side of the substrate layer, wherein the thickness of the scratch-resistant layer is 3 μm, and the thickness of the substrate layer is 23 μm;

[0037] (2) Evenly disperse the laser wiretapping blocking material in a solvent containing pressure-sensitive adhesive to form a coating for the laser wiretapping blocking layer, and coat it on another layer of the substrate layer, the formula of the laser wiretapping blocking material Cesium tungsten bronze, ATO, and ITO in a ratio of 1:1:1, the total amount of cesium tungsten bronze, ATO, and ITO added is 4g / ㎡, and the thickness of the laser eavesdropping blocking layer is 6μm;

[0038] (3) Magnetron sputtering electromagnetic shielding layer on another substrate layer, and combining the electromagnetic shielding layer with the laser blocking lay...

Embodiment 2

[0040] A method for preparing an electromagnetic shielding laser eavesdropping blocking two-in-one film, comprising the following steps:

[0041] (1) The laser eavesdropping blocking material is evenly added to the substrate layer material to produce the laser eavesdropping blocking substrate layer. The formula of the laser eavesdropping blocking material is cesium tungsten bronze, ATO, cesium tungsten bronze, The total amount of ATO added is 3g / ㎡, and the thickness is 23μm or other thicknesses;

[0042] (2) Magnetron sputtering electromagnetic shielding layer on one side of the laser eavesdropping blocking substrate layer, and the other side is coated with an anti-scratch layer, and the thickness of the anti-scratch layer is 3 μm;

[0043] (3) After coating the pressure-sensitive adhesive on the outside of the electromagnetic shielding layer, it is compounded with the release film. The electromagnetic shielding layer is AZO with a thickness of 92nm, Ag with a thickness of 16-...

Embodiment 3

[0045] A method for preparing an electromagnetic shielding laser eavesdropping blocking two-in-one film, comprising the following steps:

[0046](1) Magnetron sputtering electromagnetic shielding layer on one side of the substrate layer, the electromagnetic shielding layer is a three-layer structure of AZO, 16-20nm Ag, and 45nm AZO with a thickness of 45nm prepared by magnetron sputtering, and the other side Coating an anti-scratch layer, the thickness of the anti-scratch layer is 3 μm, and the thickness of the substrate layer is 23 μm;

[0047] (2) The laser eavesdropping blocking material is dispersed in the pressure-sensitive adhesive coating and coated on the electromagnetic shielding layer, and finally compounded with the release film. The formula of the laser eavesdropping blocking material is cesium tungsten bronze and ATO in a ratio of 1:1 , The total amount of cesium tungsten bronze and ATO added is 3g / ㎡, the thickness of the laser eavesdropping blocking pressure-sens...

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Abstract

The invention relates to an electromagnetic shielding and laser eavesdropping blocking two-in-one film and a preparation method thereof. The film material comprises an anti-scraping layer, an electromagnetic shielding and laser eavesdropping blocking layer and a release film which are sequentially arranged. The electromagnetic shielding and laser eavesdropping blocking layer is of a composite structure composed of a laser eavesdropping blocking base material layer, an electromagnetic shielding layer and a pressure-sensitive adhesive layer, or of a composite structure composed of a base material layer, an electromagnetic shielding layer and a laser eavesdropping blocking pressure-sensitive adhesive layer. According to the invention, a material with a certain protection effect on laser is preferably selected as an electromagnetic shielding material, and the material is used as an electromagnetic shielding part of the electromagnetic shielding and laser eavesdropping blocking two-in-one film, so that the visible light transmittance of a product can be greatly improved, and the use of a laser blocking material is reduced; and a base material layer or a pressure-sensitive adhesive layer in an electromagnetic shielding film is improved to form a laser eavesdropping blocking base material layer or a laser eavesdropping blocking pressure-sensitive adhesive layer, so that electromagnetic shielding and laser eavesdropping blocking are integrated, the structure is simple, the number of layers is small, and the processing technology is simple.

Description

technical field [0001] The invention relates to the technical field of electromagnetic shielding laser eavesdropping blocking, in particular to an electromagnetic shielding laser eavesdropping blocking two-in-one film and a preparation method thereof. Background technique [0002] The latest way of leaking secrets is "laser eavesdropping", that is, lasers invisible to the human eye are used to hit objects, collect vibrations caused by sound, and then restore them to sound. Laser eavesdropping blocking film is specially designed for the new technology of laser eavesdropping, which can realize eavesdropping protection. [0003] When electronic equipment is working, it can radiate out through ground wires, power wires, signal wires, parasitic electromagnetic signals or harmonics, resulting in electromagnetic leakage. If these electromagnetic signals are received and extracted, the original information can be recovered, resulting in information loss. Computer information syste...

Claims

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Application Information

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IPC IPC(8): C09J7/22C09J7/25C09J7/24C09J7/38C09J7/50C09J11/04C08K3/24C08K3/22C08J5/18
CPCC09J7/22C09J7/255C09J7/245C09J7/243C09J7/25C09J7/24C09J7/38C09J7/50C09J11/04C08J5/18C08K3/24C08K3/22C09J2301/122C09J2301/302C09J2301/408C09J2467/006C09J2427/006C09J2475/006C09J2469/006C09J2433/006C09J2423/046C09J2423/106
Inventor 颜徐州吴善武仲从磊
Owner 三千新材料苏州有限公司
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