Conductive paint for shielding signals and use method thereof

A technology of shielding signals and conductive paint, applied in the field of conductive paint, can solve problems such as poor adhesion and general conductive effect, and achieve the effects of improving efficiency, fast spraying construction, and reducing costs

Pending Publication Date: 2022-03-25
FOSHAN CITY GREEND CHEM
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned existing conductive ink has a general conductive effect and poor adhesion, so it cannot shield the signal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive paint for shielding signals and use method thereof
  • Conductive paint for shielding signals and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A conductive paint for shielding signals sprayed on the surface of a camera module, comprising a primer, a middle coat and a top coat, wherein,

[0033] The primer is composed of A component and B component in a weight ratio of 100:16, and the A component is composed of the following raw materials in weight percentage: semi-finished resin 27.3%, conductive copper paste 40%, cyclohexanone 20%, Butyl ester 10%, anti-settling agent 1%, defoamer 0.2% and silane coupling agent 1.5%;

[0034] The semi-finished resin is composed of the following raw materials by weight percentage: 10% of cycloethyl ketone, 15% of anti-white water, 15% of PMA, 20% of butyl ester and 40% of hydroxy acrylic resin;

[0035] Described hydroxy acrylic resin selects the acrylic resin whose hydroxyl value is 35-50 and acid value is less than 10, such as the brand BM260 produced by Shanghai Bolier Chemical Co., Ltd.;

[0036] The B component is composed of the following raw materials in percentage by ...

Embodiment 2

[0047] A conductive paint for shielding signals sprayed on the surface of a camera module, comprising a primer, a middle coat and a top coat, wherein,

[0048] The primer is composed of A component and B component in a weight ratio of 98:18, and the A component is composed of the following raw materials in weight percentage: semi-finished resin 22%, conductive copper paste 45%, cyclohexanone 25%, Butyl ester 5%, anti-settling agent 0.5%, defoamer 1% and silane coupling agent 1.5%;

[0049] The semi-finished resin is composed of the following raw materials by weight percentage: 15% of cycloethyl ketone, 15% of anti-white water, 20% of PMA, 15% of butyl ester and 35% of hydroxy acrylic resin;

[0050] Described hydroxy acrylic resin selects the acrylic resin whose hydroxyl value is 35-50 and acid value is less than 10, such as the brand BM262 produced by Shanghai Bolier Chemical Co., Ltd.;

[0051] The B component is composed of the following raw materials by weight: HDI curing...

Embodiment 3

[0062] A conductive paint for shielding signals sprayed on the surface of a fingerprint identification module, which comprises a primer coating, a middle coating and a top coating, wherein,

[0063] The primer is composed of A component and B component in a weight ratio of 102:15, and the A component is composed of the following raw materials in weight percentage: semi-finished resin 32%, conductive copper paste 35%, cyclohexanone 15%, Butyl ester 15%, anti-settling agent 1.5%, defoamer 0.1% and silane coupling agent 1.4%;

[0064] The semi-finished resin is composed of the following raw materials by weight percentage: 5% of cycloethyl ketone, 20% of anti-white water, 10% of PMA, 20% of butyl ester and 45% of hydroxy acrylic resin;

[0065] Described hydroxy acrylic resin selects the acrylic resin whose hydroxyl value is 35-50 and acid value is less than 10, such as the brands BM262 and BM260 produced by Shanghai Bo Lier Chemical Co., Ltd.;

[0066] The B component is compose...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses conductive paint for shielding signals and a use method of the conductive paint. The conductive paint comprises a prime coat, a floating coat and a top coat, and the prime coat is composed of a component A and a component B; the component A is prepared from the following raw materials in percentage by weight: 22 to 32 percent of semi-finished product resin, 35 to 45 percent of conductive copper paste, 15 to 25 percent of cyclohexanone, 5 to 15 percent of butyl ester, 0.5 to 1.5 percent of anti-settling agent, 0.1 to 1 percent of defoaming agent and 1 to 2 percent of silane coupling agent; the semi-finished resin is prepared from the following raw materials in percentage by weight: 5-15% of cyclohexanone, 10-20% of ethylene glycol monobutyl ether, 10-20% of PMA, 15-25% of butyl ester and 35-45% of hydroxy acrylic resin; the floating coat is prepared from the following raw materials in percentage by weight: 10-15% of thermoplastic acrylic resin, 5-15% of cyclohexanone, 5-15% of PMA, 1-5% of an anti-settling aid, 40-45% of conductive copper paste and 15-25% of conductive pure silver paste. Three layers of coatings are adopted to form the high-performance signal shielding layer, the resistance value of the floating coat in the conductive paint is below 0.2 ohm, signals can be absolutely shielded, the method is used for replacing an original signal shielding layer made of metal, cost can be effectively reduced, and efficiency can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of conductive paint, in particular to a conductive paint for shielding signals and a method for using the same. Background technique [0002] The signal shielding cover is mainly used in the field of 3C electronic products such as mobile phones and computers, mainly to prevent signal interference between various electronic components, so it is necessary to shield the signals of some electronic components, especially in 5G mobile phones. High degree of requirements, so the fingerprint module, camera module and other working module signals must be shielded. For example, during video chat, there will be interference between the camera module and the mobile phone call signal, resulting in screen flickering or calls. If it is not clear, it is necessary to shield the signal transmitter and camera module. The existing method of shielding the signal is to use metal to make a shielding cover to avoid signal interfer...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/24C09D5/25C09D5/00B05D7/26B05D7/00B05D1/38B05D1/02
CPCC09D133/04C09D5/002C09D5/24C09D5/00B05D7/26B05D7/584B05D7/586B05D1/38B05D1/02C08K2003/085C08K2003/0806C08K3/08C08K3/04
Inventor 石树庭刘鸣强杨海伦刘志贤
Owner FOSHAN CITY GREEND CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap