Unlock instant, AI-driven research and patent intelligence for your innovation.

Electromagnetic shielding material containing carbon nano-tube and method for preparing the same using chemical plating technique

A technology of electromagnetic shielding materials and carbon nanotubes, which is applied in metal material coating technology, liquid chemical plating, magnetic field/electric field shielding, etc., can solve the problems of restricting the use of aircraft and heavy electromagnetic shielding materials

Inactive Publication Date: 2008-11-12
BEIHANG UNIV
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, currently used electromagnetic shielding materials are heavy, thus limiting their use on aircraft

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The electromagnetic shielding material in this example is composed of carbon nanotubes, metallic iron, and cobalt, wherein the mass percent of metallic iron in the electromagnetic shielding material is 5, the mass percent of metallic cobalt is 10, and the balance is carbon nanotubes.

[0083] The present invention adopts electroless plating process to prepare electromagnetic shielding material on carbon nanotube and comprises the following steps:

[0084] The first step: selection of base material

[0085] The matrix material is a multi-walled carbon nanotube; the diameter of the multi-walled carbon nanotube is 10-30 nm, and the length is 1-2 μm;

[0086] The second step: the pretreatment of the substrate

[0087] (A) Preparation of sensitization treatment solution

[0088] The sensitization treatment liquid is made of stannous chloride (SnCl 2 2H 2 O), sodium stannate (Na 2 SnO 3 ), hydrochloric acid (HCl) and deionized water;

[0089] Dosage: Add 25g of stannou...

Embodiment 2

[0120] The electromagnetic shielding material of the present invention is composed of carbon nanotubes, metallic iron and cobalt, wherein the mass percent of metallic iron in the electromagnetic shielding material is 8, the mass percent of metallic cobalt is 12, and the balance is carbon nanotubes.

[0121] The present invention adopts electroless plating process to prepare electromagnetic shielding material on carbon nanotube and comprises the following steps:

[0122] The first step: selection of base material

[0123] The matrix material is a multi-walled carbon nanotube; the diameter of the multi-walled carbon nanotube is 10-30 nm, and the length is 1-2 μm;

[0124] The second step: the pretreatment of the substrate

[0125] (A) Preparation of sensitization treatment solution

[0126] The sensitization treatment liquid is made of stannous chloride (SnCl 2 2H 2 O), sodium stannate (Na 2 SnO 3 ), hydrochloric acid (HCl) and deionized water;

[0127] Dosage: Add 31g of...

Embodiment 3

[0158] The electromagnetic shielding material of the present invention is composed of carbon nanotubes, metallic iron and cobalt, wherein the mass percent of metallic iron in the electromagnetic shielding material is 10, the mass percent of metallic cobalt is 15, and the balance is carbon nanotubes.

[0159] The present invention adopts electroless plating process to prepare electromagnetic shielding material on carbon nanotube and comprises the following steps:

[0160] The first step: selection of base material

[0161] The matrix material is a multi-walled carbon nanotube; the diameter of the multi-walled carbon nanotube is 10-30 nm, and the length is 1-2 μm;

[0162] The second step: the pretreatment of the substrate

[0163] (A) Preparation of sensitization treatment solution

[0164] The sensitization treatment liquid is made of stannous chloride (SnCl 2 2H 2 O), sodium stannate (Na 2 SnO 3 ), hydrochloric acid (HCl) and deionized water;

[0165] Dosage: Add 37.5g...

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
densityaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an electromagnetic shielding material containing a carbon nano-tube and a method for manufacturing the electromagnetic shielding material by adopting the technology of chemical plating. The electromagnetic shielding material consists of the carbon nano-tube, metallic iron and metallic cobalt. The mass percent of the metallic iron in the electromagnetic shielding material accounts for 5 to 10; the mass percent of the metallic iron in the electromagnetic shielding material accounts for 10 to 15 and the carbon nano-tube accounts for the other mass percent. The electromagnetic shielding material made by the technology of chemical plating is 2 to 3mm in thickness, absorption strength is 30 to 40dB, band width is 5 to 18GHz and the density of the electromagnetic shielding material is 2.2 to 3.0g / cm<3>.

Description

technical field [0001] The invention relates to an electromagnetic shielding material and a preparation method thereof, more particularly, to an electromagnetic shielding material formed by coating a magnetic metal layer on a carbon nanotube by an electroless plating process. Background technique [0002] When the electromagnetic field propagates in a conductive medium, the amplitude of its field quantity (E and H) decays exponentially with the increase of distance. From the point of view of energy, the electromagnetic wave has energy loss when it propagates in the conductive medium, so it appears as the decrease of the amplitude of the field. The field quantity on the surface of the conductor is the largest, and the deeper the conductor is, the smaller the field quantity is. This phenomenon is also known as the skin effect. The use of the skin effect can prevent high-frequency electromagnetic waves from penetrating into good conductors and make electromagnetic shielding d...

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): H05K9/00C23C18/18C23C18/48
Inventor 肇研段跃新薛亚娟孙莉莉郑浩
Owner BEIHANG 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