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Method for preparing carbon nano-tubes/polypyrrole nano-particles with performance of metamaterials

A carbon nanotube and pyrrole nanotechnology, which is applied in the field of carbon nanotube/polypyrrole nanoparticle preparation, can solve problems such as the inability to synthesize polymer materials, and achieve the effect of ensuring uniformity

Inactive Publication Date: 2017-02-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that existing methods cannot synthesize polymer materials with negative permittivity and negative magnetic permeability, and provides a method for preparing carbon nanotubes / polypyrrole nanoparticles with metamaterial properties

Method used

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  • Method for preparing carbon nano-tubes/polypyrrole nano-particles with performance of metamaterials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Example 1: This embodiment is a method for preparing carbon nanotubes / polypyrrole nanoparticles with metamaterial properties, which is carried out according to the following steps.

[0017] Preparation of dispersion liquid A: Weigh 0.1 mol of succinic acid, 0.04 mol of tert-butyl hydroperoxide and 20% multi-walled carbon nanotubes, and add them into 400 ml of water. Ultrasonic dispersion for 60 minutes (power 400W) to fully disperse tert-butyl hydroperoxide, succinic acid and multi-walled carbon nanotubes in water.

[0018] Preparation of dispersion B: 0.18mol pyrrole (Py) dispersed in 80ml of water, Py dispersion in ice-water mixture, ultrasonic 60min, power 400W.

[0019] Preparation of carbon nanotubes / polypyrrole nanoparticles: the dispersion A was placed in the ice-water mixture contained in the crystallization dish, and the crystallization dish was placed on a magnetic stirrer stirring at a speed of 500 r / min. When the temperature of the dispersion is lower than ...

Embodiment ５

[0041] Example 5: This embodiment is a method for preparing carbon nanotubes / polypyrrole nanoparticles with a metamaterial performance constant. The difference between this embodiment and the second embodiment is that the first step uses multi-walled carbon The mass fraction of nanotubes was 40%, and the other steps were the same.

[0042] Adopt following experiment to verify effect of the present invention:

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Abstract

The invention relates to a method for preparing carbon nano-tubes / polypyrrole nano-particles with the performance of metamaterials. The metamaterials are artificial composite materials with periodic or non-periodic man-made micro-structures which are arrayed, are a type of novel man-made materials and are of special structures, and negative dielectric constants and magnetic permeability can be displayed. Designs of the metamaterials are focused on complicated geometric shapes up to now. Dielectric constants epsilon of the carbon nano-tubes / polypyrrole nano-particles prepared by the aid of the method range from -3.0*10<5> to 400 in the ranges of 1MHz-1GHz, the magnetic permeability mu of the carbon nano-tubes / polypyrrole nano-particles ranges from 1 to -0.06, and reports on directly prepared high-polymer composite materials with the performance of metamaterials are unavailable at present. The method has the advantages that the metamaterials are prepared by the aid of the method for synthesizing materials, and accordingly the method is beneficial to expanding application of the metamaterials to the fields of invisibility, miniature antennas, electronic components and the like; the carbon nano-tubes / polypyrrole nano-particles prepared by the aid of the method are powdery and have uniform particle sizes; the method can be used for preparing nano-composite electromagnetic metamaterials.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube / polypyrrole nanoparticle with supermaterial performance. Background technique [0002] As a typical conductive polymer, polypyrrole has broad application prospects and important application values ​​in the fields of catalysis, capacitors, information storage, secondary batteries, and electromagnetic wave absorption. At present, the in-situ polymerization of carbon nanotubes / polypyrrole nanoparticles can use a variety of protonic acids and oxidants, such as protonic acids can use sulfuric acid, hydrochloric acid, phosphoric acid, perchloric acid, nitric acid, etc.; oxidants can use hydrogen peroxide, potassium permanganate, Potassium iodate, sodium orthovanadate, ferric chloride, etc. However, the carbon nanotubes / polypyrrole nanoparticles synthesized by these oxidants and protonic acids have positive permittivity and positive magnetic permeability, and cannot make the product have negati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K7/24
CPCC08G73/0611C08K7/24C08K2201/001C08K2201/011
Inventor 邱军寇雪晨姚秀超
Owner TONGJI UNIV