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Adhesive for PDP protection screen electromagnetic wave shielding lamination and preparation method of functional film of adhesive

A technology of adhesives and electromagnetic waves, applied in the direction of adhesives, conductive adhesives, film/sheet adhesives, etc., can solve the problems of electrical equipment and human body adverse effects, easy aging and cracking, and large adhesive stress

Inactive Publication Date: 2021-01-22
苏州维盛特克电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the electromagnetic waves generated by the PDP screen will not only affect its own electromagnetic equipment, but also have adverse effects on the surrounding electrical equipment and human body. At present, in order to shield electromagnetic waves, electromagnetic wave shielding functional films are generally used. The interior of functional films It is mainly bonded by electromagnetic wave adhesives, and the existing adhesives have a large stress and are prone to aging and cracking, which makes the service life of the functional film low.

Method used

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  • Adhesive for PDP protection screen electromagnetic wave shielding lamination and preparation method of functional film of adhesive
  • Adhesive for PDP protection screen electromagnetic wave shielding lamination and preparation method of functional film of adhesive
  • Adhesive for PDP protection screen electromagnetic wave shielding lamination and preparation method of functional film of adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of an adhesive for bonding electromagnetic wave shielding of a PDP protective screen:

[0026] An adhesive for PDP protective screen electromagnetic wave shielding bonding, the adhesive is composed of the following components and mass fractions: 90 parts of phenolic resin, 50 parts of nitrile latex, 20 parts of polyvinyl butyral, 10 parts of carbon powder, sodium carbonate 1 part of powder, 40 parts of mixed solvent, the content of carbon black in the carbon powder is 50%, and the average particle size of carbon black is between 0.3 μm, the content of magnetic iron oxide in the carbon powder is 3%, and the mixed solvent is 95% Ethanol solution and ethyl acetate solution, and the mass ratio of 95% ethanol solution and ethyl acetate solution is 1:1.

[0027] The preparation method of the adhesive for electromagnetic wave shielding and bonding comprises the following steps:

[0028] S1. Add polyvinyl butyral, nitrile latex and a mixed solvent to the phenolic r...

Embodiment 2

[0036] Preparation of an adhesive for bonding electromagnetic wave shielding of a PDP protective screen:

[0037] An adhesive for PDP protective screen electromagnetic wave shielding bonding, the adhesive is composed of the following components and mass fractions: 70 parts of phenolic resin, 40 parts of nitrile latex, 30 parts of polyvinyl butyral, 10 parts of carbon powder, sodium carbonate 10 parts of powder, 40 parts of mixed solvent, the content of carbon black in the carbon powder is 50%, and the average particle size of carbon black is between 0.3 μm, the content of magnetic iron oxide in the carbon powder is 3%, and the mixed solvent is 95% Ethanol solution and ethyl acetate solution, and the mass ratio of 95% ethanol solution and ethyl acetate solution is 1:1.

[0038] The preparation method of the adhesive for electromagnetic wave shielding and bonding comprises the following steps:

[0039] S1. Add polyvinyl butyral, nitrile latex and a mixed solvent to the phenolic...

Embodiment 3

[0047] Preparation of an adhesive for bonding electromagnetic wave shielding of a PDP protective screen:

[0048]An adhesive for PDP protective screen electromagnetic wave shielding bonding, the adhesive is composed of the following components and mass fractions: 90 parts of phenolic resin, 40 parts of nitrile latex, 20 parts of polyvinyl butyral, 20 parts of carbon powder, sodium carbonate 5 parts of powder, 40 parts of mixed solvent, the content of carbon black in the carbon powder is 50%, and the average particle size of carbon black is between 0.3 μm, the content of magnetic iron oxide in the carbon powder is 3%, and the mixed solvent is 95% Ethanol solution and ethyl acetate solution, and the mass ratio of 95% ethanol solution and ethyl acetate solution is 1:1.

[0049] The preparation method of the adhesive for electromagnetic wave shielding and bonding comprises the following steps:

[0050] S1. Add polyvinyl butyral, nitrile latex and a mixed solvent to the phenolic r...

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Abstract

The invention discloses an adhesive for PDP protection screen electromagnetic wave shielding lamination. The adhesive is composed of the following components in parts by mass: 70-90 parts of phenolicresin, 40-50 parts of butyronitrile latex, 20-30 parts of polyvinyl butyral, 10-20 parts of carbon powder, 1-5 parts of sodium carbonate powder and 40-50 parts of a mixed solvent. The invention also discloses a preparation method of the functional film. The preparation method comprises the following steps: S1, spraying an adhesive on a copper sheet electroplated with silver by using a spin coater;and S2, covering the surface of the adhesive with a plastic film, and carrying out press-coating for 1-2 h by using a cold press to prepare the functional film for PDP protection screen electromagnetic wave shielding lamination. According to the adhesive for electromagnetic wave shielding lamination of the PDP protection screen, carbon powder is added, the adhesive is cured to cause volume shrinkage, stable continuous contact of carbon black and electrical conductivity, the adhesive is matched with magnetic iron oxide to play a role in shielding electromagnetic waves, butyronitrile latex is added into phenolic resin, the elasticity of an adhesive layer is improved, internal force is reduced, therefore, the aging and cracking time of the adhesive is prolonged.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave shielding adhesives and films, in particular to a preparation method of an adhesive for electromagnetic wave shielding and bonding of a PDP protective screen and a functional film thereof. Background technique [0002] PDP screens use plasma tubes as light-emitting elements, and each plasma tube on the screen corresponds to a pixel. The screen uses glass as a substrate, and the substrates are separated by a certain distance. The mixed inert gas such as xenon is used as the working medium, and the metal oxide conductive film is coated on the inner side of the two glass substrates as the excitation electrode. When voltage is applied to the electrodes, the mixed gas in the discharge space will generate plasma discharge. The gas plasma discharge generates ultraviolet rays, which excite the fluorescent screen, and the fluorescent screen emits visible light to display images. [0003] Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/06C09J109/04C09J129/14C09J11/04C09J9/02C09J7/30C09J7/29C09J7/28
CPCC09J161/06C09J11/04C09J9/02C09J7/30C09J7/29C08L2205/03C08L2201/08C08K2201/01C08K2003/2272C08K2201/001C08L2201/04C09J2203/326C09J2400/163C09J2409/00C09J2429/00C09J2461/00C08L9/04C08L29/14C08K3/04C08K3/26C08K3/22
Inventor 宋仁圭
Owner 苏州维盛特克电子有限公司