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A flexible transparent conductive composite material film for electromagnetic shielding and its preparation method

A composite film and electromagnetic shielding technology, applied in the field of information security, can solve the problems of high cost, complicated graphene production process, unsuitable popularization and application, etc.

Active Publication Date: 2021-04-27
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the current conductive electromagnetic shielding coating materials are mainly graphene electromagnetic shielding composite materials, but due to the complicated preparation process and high cost of graphene, it is not suitable for widespread popularization and application.

Method used

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  • A flexible transparent conductive composite material film for electromagnetic shielding and its preparation method
  • A flexible transparent conductive composite material film for electromagnetic shielding and its preparation method
  • A flexible transparent conductive composite material film for electromagnetic shielding and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for preparing a flexible transparent conductive composite film for electromagnetic shielding, characterized in that it comprises the following steps:

[0053] 1) pretreating the substrate;

[0054] The substrate is rigid glass.

[0055] The substrate pretreatment process includes: the substrate pretreatment process includes: the prepared rigid glass has a size of 1.5cm×1.5cm, and is ultrasonically cleaned with tap water, deionized water, and acetone for 10 minutes, wherein the deionized water Wash three times, and the rest once. Store in isopropanol after cleaning, blow dry with nitrogen before use, and treat it under an ultraviolet ozone cleaner for 30 minutes before use.

[0056] 2) adding PEDOT / PSS aqueous solution, acidic reagent and surfactant pretreated magnetic nanoparticles into container A and stirring until uniformly mixed to obtain mixture A;

[0057] The volume of the PEDOT / PSS aqueous solution is 300 μL; the mass content of PEDOT / PSS in the PEDOT / P...

Embodiment 2

[0069] A method for preparing a flexible transparent conductive composite film for electromagnetic shielding, characterized in that it comprises the following steps:

[0070] 1) pretreating the substrate;

[0071] The substrate is PET flexible plastic.

[0072] The substrate pretreatment process includes: PET flexible plastic with a size of 10cm×10cm, washing with tap water and detergent, removing the detergent and then washing with acetone, and then placing it in the air to dry naturally before use.

[0073] 2) adding PEDOT / PSS aqueous solution, acidic reagent and surfactant pretreated magnetic nanoparticles into container A and stirring until uniformly mixed to obtain mixture A;

[0074] The volume of the PEDOT / PSS aqueous solution is 300 μL; the mass content of PEDOT / PSS in the PEDOT / PSS aqueous solution is 1.3%;

[0075] The acidic reagent is H 2 SO 4 ; the H 2 SO 4 The concentration is 1mol / L; the H 2 SO 4 The volume is 26 μL; the H in the mixture A 2 SO 4 The c...

Embodiment 3

[0086] A method for preparing a flexible transparent conductive composite film for electromagnetic shielding, characterized in that it comprises the following steps:

[0087] 1) pretreating the substrate;

[0088] The substrate is rigid glass.

[0089] The substrate pretreatment process includes: the substrate pretreatment process includes: the prepared rigid glass has a size of 1.5cm×1.5cm, and is ultrasonically cleaned with tap water, deionized water, and acetone for 10 minutes, wherein the deionized water Wash three times, and the rest once. Store in isopropanol after cleaning, blow dry with nitrogen before use, and treat with ultraviolet ozone cleaner for 30 minutes before use.

[0090] 2) Add 300 μL PEDOT / PSS aqueous solution and 26 μL acid reagent into container B, mix and stir to obtain mixture B;

[0091] Add 100 μL of surfactant and 2.6 mg of magnetic nanoparticles into container C, mix and stir to obtain pretreated magnetic nanoparticles;

[0092] The acidic reage...

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Abstract

The invention discloses a method for preparing a flexible transparent conductive composite material film for electromagnetic shielding, which comprises the following steps: 1) pretreating a substrate; 2) mixing PEDOT / PSS aqueous solution, acidic reagent and pretreated magnetic Add the nanoparticles into container A and stir until they are evenly mixed to obtain mixture A; or add the PEDOT / PSS aqueous solution and pretreated magnetic nanoparticles to the acidic reagent respectively to obtain mixture B and mixture C; 3) combine step 2) The mixture A obtained in step 1) is coated on the substrate obtained in step 1), or the mixture B and the mixture C are sequentially coated on the substrate, and after drying, a high conductivity film with electromagnetic shielding effect is obtained on the substrate.

Description

technical field [0001] The invention relates to the field of information security, in particular to a method for preparing a flexible transparent conductive composite film used for electromagnetic shielding. Background technique [0002] Multifunctional materials have important applications in different fields. Magnetic materials and conductive polymers have attracted a lot of attention because of their important applications in different fields, such as electromagnetic interference shielding, microwave absorption, magnetic control switches , Schottky diodes, magnetically conductive thin films, tissue engineering, biocatalysis, energy storage, sensors, optical devices, filtration and removal of organic and inorganic pollutants or heavy metal ions from wastewater. [0003] Especially in the field of electromagnetic shielding, with the rapid development of science and technology, various electronic devices have entered our lives, and the electromagnetic radiation generated by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00
CPCH05K9/0081
Inventor 孙宽张林李猛周永利夏亿颉李静
Owner CHONGQING UNIV