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A light-shielding conductive adhesive and tape with strong shielding performance and preparation method

A technology of conductive tape and conductive adhesive, which is applied in the direction of conductive adhesives, adhesives, adhesive additives, etc., can solve the problems of low electromagnetic shielding efficiency and inability to achieve radiation shielding effects of conductive tapes, and achieve good electromagnetic shielding performance. Excellent stability and conductive shielding performance

Active Publication Date: 2018-11-02
NINGBO SOKEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although various conductive tapes claiming to have electromagnetic shielding functions emerge in endlessly on the market, the actual electromagnetic shielding effectiveness of the existing conductive tapes is often low, and cannot achieve a true radiation shielding effect.

Method used

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  • A light-shielding conductive adhesive and tape with strong shielding performance and preparation method
  • A light-shielding conductive adhesive and tape with strong shielding performance and preparation method
  • A light-shielding conductive adhesive and tape with strong shielding performance and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of light-shielding conductive adhesive composition:

[0030] Add 0.5 part of toluene diisocyanate and trimethylolpropane adduct (TDI-DMP adduct, produced by BASF, Germany, model: L-75) and 1 part of carbon black paste B807 (produced by Suzhou Shimin Technology Co., Ltd. ) was added to 100 parts of acrylate pressure-sensitive adhesive (produced by Zongyan Chemical Co., Ltd., Ningbo Daxie Development Zone), stirred for 10 minutes to form a mixture, and 5 parts of carbonyl nickel powder T123 (Brazilian Vale company), and then add the wetted nickel carbonyl powder to the above mixture, add the remaining 10 parts of ethyl acetate, and stir for 10 minutes to obtain a uniform and stable light-shielding conductive adhesive composition. Among them, the content of nickel particles in the above-mentioned carbonyl nickel powder is more than 98.5%, and the particle size of nickel particles is 3-5 μm; the content of carbon black in the carbon black slurry is 30%, and the ...

Embodiment 2

[0034] Preparation of light-shielding conductive adhesive composition:

[0035] Add 1 part of toluene diisocyanate and trimethylolpropane adduct (TDI-DMP adduct, produced by BASF, Germany, model: L-75) and 3 parts of carbon black paste B807 (produced by Suzhou Shimin Technology Co., Ltd. ) was added to 100 parts of acrylate pressure-sensitive adhesive (produced by Zongyan Chemical Co., Ltd., company), and then add the wet carbonyl nickel powder into the above mixture, and stir for 15 minutes to obtain a uniform and stable light-shielding conductive adhesive composition. Among them, the content of nickel particles in the above-mentioned carbonyl nickel powder is more than 98.5%, and the particle size of nickel particles is 3-5 μm; the content of carbon black in the carbon black slurry is 40%, and the carbon black with a particle size of 0.5 μm is ground and dispersed , Prepared after dissolving, the acrylate pressure-sensitive adhesive is an acrylate polymer, the average molecul...

Embodiment 3

[0040] Preparation of light-shielding conductive adhesive composition:

[0041] Add 0.9 parts of hexamethylene diisocyanate derivatives (model: BASONAT HB-175, produced by BASF, Germany) and 7 parts of carbon black paste B807 (produced by Suzhou Shimin Technology Co., Ltd.) to 100 parts of acrylate pressure-sensitive adhesive (Ningbo Daxie Development Zone Zongyan Chemical Co., Ltd.), stirred for 20 minutes to form a mixture, wet 15 parts of carbonyl nickel powder T123 (produced by Brazil Vale Corporation) with 20 parts of ethyl acetate, and then wetted the carbonyl Nickel powder was added to the above mixture, and the remaining 10 parts of ethyl acetate were added, and stirred for 20 minutes to obtain a uniform and stable light-shielding conductive adhesive composition. Among them, the content of nickel particles in the above-mentioned carbonyl nickel powder is more than 98.5%, and the particle size of nickel particles is 3-5 μm; the content of carbon black in the carbon blac...

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Abstract

The invention relates to a shading conductive adhesive composition which is composed of the following components, by mass: 100 parts of an acrylate pressure-sensitive adhesive, 0.5-4 parts of an isocyanate-series hardening agent, 1-15 parts of a carbon black color paste, 5-50 parts of carbonyl nickel powder, and 10-100 parts of ethyl acetate. The invention also relates to a preparation method of the adhesive composition, a shading conductive adhesive tape adopting the shading conductive adhesive composition, and a preparation method of the adhesive tape. Compared with prior arts, according to the invention, the isocyanate-series hardening agent, carbon black color paste, carbonyl nickel powder and the like are added into the acrylate pressure-sensitive adhesive, such that the prepared shading conductive adhesive composition and the adhesive tape have good electromagnetic shielding effectiveness, such that strong electromagnetic wave shielding performance is obtained.

Description

technical field [0001] The invention relates to the field of adhesive tapes, in particular to a light-shielding conductive adhesive with strong shielding performance, an adhesive tape and a preparation method. Background technique [0002] With the continuous development of science and technology, 3C products such as notebook computers, GPS, IPAD and mobile phones have become an indispensable part of people's daily life. Hidden danger. These electronic products emit high-frequency electromagnetic waves when used. If the human body is exposed to strong electromagnetic waves for a long time, it will affect the health of the body and even induce cancer. In addition, due to the increasingly complex working environment of modern electronic products, many electronic products themselves are complex digital and analog systems with many systems, so the electromagnetic radiation from the outside of these products and between internal systems, between transmission channels and The el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C09J7/28C09J7/21C09J7/30C09J9/02C09J175/04C09J11/04
CPCC08K3/04C08K3/18C09J7/21C09J7/22C09J7/38C09J7/381C09J9/02C09J11/04C09J175/04C09J2475/00
Inventor 吴兴波
Owner NINGBO SOKEN CHEM
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