Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of elastic electromagnetic shielding film and preparation method thereof

An electromagnetic shielding film and elastic technology, applied in the field of elastic electromagnetic shielding film and its preparation, can solve the problems of poor stability, poor conductivity of electromagnetic shielding film, etc., achieve good stability, maintain electromagnetic shielding performance, and enhance binding force Effect

Active Publication Date: 2022-02-01
GUANGDONG UNIV OF PETROCHEMICAL TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of poor electrical conductivity of the electromagnetic shielding film in the prior art, bonding with the base material through an adhesive, and poor stability, and provide a method for preparing an elastic electromagnetic shielding film

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
  • A kind of elastic electromagnetic shielding film and preparation method thereof
  • A kind of elastic electromagnetic shielding film and preparation method thereof
  • A kind of elastic electromagnetic shielding film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.

[0060] (1) Prepare a nickel chloride solution with a concentration of 0.5mol / L, add complexing agent sodium citrate (40mmol / L), nucleating agent chloroplatinic acid (0.25mmol / L), and adjust the pH value by sodium hydroxide solution is 12.0.

[0061] (2) Prepare a 0.5 mol / L hydrazine hydrate solution, and adjust the pH value to 12.0 with sodium hydroxide solution.

[0062] (3) After mixing equal volumes of the solutions prepared in the above steps, place them in a reaction vessel, react at 80° C. for 60 minutes, stop the reaction and wash with deionized water to obtain magnetic nickel nanochains;

[0063] (4) The mass ratio of magnetic nickel nanochains, conductive additive silver nanowires, sodium alginate, and water is 20:5:30:1000 to prepare an electromagnetic shielding function coating liquid;

[0064] (5) Polyurethane elastomer film was selected as ...

Embodiment 2

[0068] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.

[0069] (1) Prepare a cobalt chloride solution with a concentration of 1.0mol / L, add complexing agent sodium citrate (50mmol / L), nucleating agent chloroplatinic acid (0.3mmol / L), and adjust the pH value by sodium hydroxide solution is 12.5.

[0070] (2) Prepare 1.0 mol / L hydrazine hydrate solution and adjust the pH value to 12.5 with sodium hydroxide solution.

[0071] (3) Mix equal volumes of the solutions prepared in the above steps and place them in a reaction vessel, react at 50° C. for 30 minutes, stop the reaction and wash with deionized water to obtain magnetic cobalt nanochains.

[0072] (4) The mass ratio of magnetic cobalt nano chains, conductive additive carbon nanotubes, sodium alginate, and water is 15:8:20:1000 to prepare an electromagnetic shielding function coating liquid.

[0073] (5) Select polystyrene-butadiene elastomer film as the st...

Embodiment 3

[0077] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.

[0078] (1) preparation concentration is the nickel chloride solution of 0.5mol / L, the cobalt chloride solution of 0.5mol / L, add complexing agent sodium oxalate (60mmol / L), nucleating agent chloroplatinic acid (0.2mmol / L) , the pH was adjusted to 13.0 by potassium hydroxide solution.

[0079] (2) Prepare a 1.0 mol / L hydrazine hydrate solution, and adjust the pH value to 13.0 with potassium hydroxide solution.

[0080] (3) Mix equal volumes of the solutions prepared in the above steps and place them in a reaction vessel, react at 60° C. for 30 minutes, stop the reaction and wash with deionized water to obtain magnetic nickel-cobalt alloy nanochains.

[0081] (4) The magnetic nickel-cobalt alloy nanowires, the conductive additive copper nanowires, sodium alginate, and water are mixed in a mass ratio of 10:3:10:1000 to prepare an electromagnetic shielding fu...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to an elastic electromagnetic shielding film and a preparation method thereof. The preparation method includes the following steps: S1: Mix the mixed solution obtained by mixing the magnetic metal salt solution, the complexing agent and the nucleating agent with the hydrazine hydrate solution, perform a hydrothermal reaction at 40-80°C for 15-120 minutes, and wash with water to obtain a magnetic Metal nanochains; S2: Mix magnetic metal nanochains, conductive additives, and sodium alginate, and dissolve to obtain an electromagnetic shielding function coating solution; S3: Surface pretreatment and prestretching of stretchable film base materials, and then coating Cloth the electromagnetic shielding function coating solution; S4: dip the base material obtained in S3 into a sodium chloride solution to cross-link, dry, and remove the pre-stretching to obtain the elastic electromagnetic shielding film. The elastic electromagnetic shielding film prepared by the invention has high electromagnetic shielding function, good flexibility, light and thin, durable, stretchable and stable. The preparation method provided by the invention has simple process and good stability, and is applicable to different application scenarios.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding materials, and in particular relates to an elastic electromagnetic shielding film and a preparation method thereof. Background technique [0002] With the improvement of living standards in modern times, more and more electrical products have entered the family. These electrical appliances will more or less produce electromagnetic radiation, which causes the human body to suffer from thermal effects, no thermal effects and cumulative, compound damage to the human body, resulting in more and more people in the modern sub-health state, and the electromagnetic radiation pollution of household appliances has become popular. more and more attention. Not only human health, but also a large number of electrical or electronic equipment such as communication equipment, monitors, and medical equipment radiate electromagnetic waves. These electromagnetic waves may cause errors in the operation of p...

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 Patents(China)
IPC IPC(8): C08J7/04C08J7/044C08J7/00C09D105/04C09D5/24C08L75/04C08L9/06C08L83/04H05K9/00
CPCC08J7/00C09D105/04C09D5/24H05K9/0084C08K2201/011C08K2003/0806C08K2003/0862C08J2375/04C08J2309/06C08J2383/04C08J2405/04C08J7/0427C08K3/08C08K7/06
Inventor 吴铛彭程林若鹏
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products