Supercharge Your Innovation With Domain-Expert AI Agents!

Ultra-thin flexible electromagnetic shielding metamaterial and preparation method thereof

A technology of electromagnetic shielding and flexible materials, applied in magnetic field/electric field shielding, printed circuit manufacturing, printed circuit, etc., to achieve the effect of improving bandwidth, simple processing technology and low cost

Inactive Publication Date: 2018-11-20
SHANDONG UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the existing preparation methods of flexible electromagnetic shielding materials and their products still have many problems in terms of performance and cost. Therefore, it is necessary to study a new preparation method of flexible electromagnetic shielding materials.

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
  • Ultra-thin flexible electromagnetic shielding metamaterial and preparation method thereof
  • Ultra-thin flexible electromagnetic shielding metamaterial and preparation method thereof
  • Ultra-thin flexible electromagnetic shielding metamaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing an ultra-thin flexible electromagnetic shielding metamaterial, comprising the steps of:

[0042] (1) According to figure 1 , use drawing software CAD to design the shape of the electromagnetic shielding structural unit, and print the shape of the structural unit on paper through an ink printer for future use;

[0043] (2) adopt ink to be the conductive pen that conductive silver paste is to describe the outline of the structural unit shape on the paper in step (1) (as image 3 shown), and then cut to obtain an ultra-thin flexible electromagnetic shielding metamaterial.

[0044] Performance Testing:

[0045] 1) Test the scattering parameters (S) of the electromagnetic shielding metamaterial prepared in this embodiment under different rotation angles, and calculate the shielding efficiency (SE), the results are as follows Figure 4 As can be seen from the figure, the electromagnetic shielding metamaterial is rotated to 0 degree and 90 degree dire...

Embodiment 2

[0049] A method for preparing an ultra-thin flexible electromagnetic shielding metamaterial, comprising the steps of:

[0050] (1) According to figure 1 , use the drawing software UG to design the shape of the electromagnetic shielding structural unit, and print the shape of the structural unit on the fiber cloth by laser printing method for future use;

[0051] (2) adopting the ink to be the conductive pen of conductive silver paste to describe the outline of the structural unit shape on the fiber cloth in step (1) (as image 3 shown), and then cut to obtain an ultra-thin flexible electromagnetic shielding metamaterial.

Embodiment 3

[0053] A method for preparing an ultra-thin flexible electromagnetic shielding metamaterial, comprising the steps of:

[0054] (1) According to figure 1 , use the drawing software CAD to design the shape of the electromagnetic shielding structural unit, and draw the shape of the structural unit on the flexible plastic by spraying method for standby;

[0055] (2) adopt ink to be the conductive pen that conductive silver paste is to describe the outline of the structural unit shape on the flexible plastic in step (1) (as image 3 shown), and then cut to obtain an ultra-thin flexible electromagnetic shielding metamaterial.

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
Shielding efficiencyaaaaaaaaaa
Shielding efficiencyaaaaaaaaaa
Shielding efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention relates to an ultra-thin flexible electromagnetic shielding metamaterial and a preparation method thereof, and belongs to the technical field of flexible electromagnetic shielding materials. According to the ultra-thin flexible electromagnetic shielding metamaterial, a flexible material is taken as the substrate, and conductive silver adhesive is used as ink, and a conductive metal structure unit is drawn on the flexible substrate, so that the flexible electromagnetic shielding material is prepared; the prepared flexible electromagnetic shielding material has an excellent electromagnetic shielding effect, and can be used for wave absorption and shielding of electromagnetic waves of specific frequency; meanwhile, the preparation of the conductive metal structure unit does notrequire a process of high-temperature reduction or ultraviolet light irradiation reduction, so that the ultra-thin flexible electromagnetic shielding metamaterial has the advantages of simple process,high shielding efficiency, ultra-thin property, low cost and the like. Meanwhile, when the common paper is used as the flexible substrate, the thickness of the prepared electromagnetic shielding metamaterial is far lower than that of a common electromagnetic shielding material; and the ultra-thin flexible electromagnetic shielding metamaterial is very easy to apply to the application environmentwith complex appearance of the electronic equipment while the advantages of the metamaterial are considered.

Description

technical field [0001] The invention relates to the technical field of flexible electromagnetic shielding materials, in particular to a method for preparing electromagnetic shielding materials by drawing conductive structural units on a flexible substrate. Background technique [0002] In recent years, with the development of electronic technology, electronic equipment and communication equipment in the GHz frequency band are increasing rapidly, which has led to the wide application of electromagnetic shielding materials, such as electromagnetic wave selective frequency absorption, reducing electromagnetic interference, improving the electromagnetic compatibility of equipment, eliminating or reducing electromagnetic interference. radiation pollution, etc. Traditional electromagnetic shielding materials mainly focus on metals and their composite materials, conductive polymers and carbon materials, but there are often problems such as high density, high thickness, high cost, 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
IPC IPC(8): H05K9/00H05K3/12
CPCH05K9/0092H05K3/125H05K3/1275
Inventor 张子栋付雪雁王忠阳姜雨良范润华刘峣
Owner SHANDONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com