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Electromagnetic shielding material with chemically plated iron modified carbon nano-tubes and method for preparing same

A technology of electromagnetic shielding materials and multi-walled carbon nanotubes, applied in liquid chemical plating, magnetic field/electric field shielding, nanotechnology for materials and surface science, etc., can solve expensive and complex problems, and achieve comprehensive application performance Improving and improving the effect of magnetic properties

Active Publication Date: 2012-08-15
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vapor deposition and sol-gel techniques in cladding methods require expensive equipment or complex techniques
At present, for nano-magnetic materials, a suitable method has not been found in the prior art to prepare

Method used

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  • Electromagnetic shielding material with chemically plated iron modified carbon nano-tubes and method for preparing same
  • Electromagnetic shielding material with chemically plated iron modified carbon nano-tubes and method for preparing same
  • Electromagnetic shielding material with chemically plated iron modified carbon nano-tubes and method for preparing same

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Effect test

Embodiment 1

[0032] Take the modification of 0.9g multi-walled carbon nanotubes as an example below to further illustrate the preparation method of the electromagnetic shielding material of electroless iron-plating modified carbon nanotubes provided by the present invention. The specific steps are as follows:

[0033] Step 1, acidification pretreatment of multi-walled carbon nanotubes:

[0034] 1. Mix 67.5ml of concentrated sulfuric acid and 22.5ml of concentrated nitric acid at a volume ratio of 3:1, add 0.9g of multi-walled carbon nanotubes at 60-65°C, ultrasonically stir and reflux for 4 hours; then mix the concentrated sulfuric acid containing multi-walled carbon nanotubes Slowly add the mixed solution of concentrated nitric acid into deionized water, vacuum filter, and repeatedly wash the multi-walled carbon nanotubes obtained after vacuum filtration with deionized water until the washing solution is neutral.

[0035] The vacuum degree in the vacuum suction filtration is -0.03MPa~-0.0...

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PUM

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Abstract

The invention discloses an electromagnetic shielding material with chemically plated iron modified carbon nano-tubes and a method for preparing the same, belonging to the technical field of nano-material preparation, wherein multi-wall carbon nano-tubes which are subjected to surface acidification pretreatment and pretreatment are added to chemical plating solution and every carbon nano-tube is covered with a metal iron layer with ferromagnetism by a chemical plating method, so that the magnetic property of the carbon nano-tubes is improved; therefore, the integrated application properties ofthe carbon nano-tubes are also greatly improved while the original excellent properties of the carbon nano-tubes are maintained; as a result, the carbon nano-tubes can be applied to nano-ferromagnetism research, high-density memories and electromagnetic shielding materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and specifically relates to an electromagnetic shielding material for electroless iron-plating modified carbon nanotubes and a preparation method thereof. Background technique [0002] Carbon nanotubes, also known as bucky tubes, are known as the "king of nanometers". They are seamless tubular layer structures formed by curling single-layer or multi-layer graphite sheets. 2 A cylindrical surface composed of hexagonal planes formed by hybridization and the surrounding three carbon atoms, each layer is constructed by a large ∏ bond electron system, including a hexagonal ring and a pentagonal ring at the top, similar to a hexagonal The polygonal lattice curls into a tubular microstructure. A constant distance of about 0.34 nm is maintained between layers. Carbon nanotubes are currently the strongest and thinnest fibers with a very high aspect ratio (a diameter of a few t...

Claims

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Application Information

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IPC IPC(8): C23C18/36C23C18/18B82Y40/00B82Y30/00H05K9/00
Inventor 肇研段跃新李翔孙健明王琰申雄刚董麒刘慕春
Owner BEIHANG UNIV
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