P-toluenesulfonic acid doped polypyrrole/multi-walled carbon nanotube composite material

A technology of multi-walled carbon nanotubes and p-toluenesulfonic acid, which is applied in the field of p-toluenesulfonic acid-doped polypyrrole/multi-walled carbon nanotube composite materials, can solve the problems of low impedance matching and carbon nanotube agglomeration, and achieve saving Effects of energy, accelerated reaction speed, and increased reaction yield

Pending Publication Date: 2021-10-22
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems that carbon nanotubes are prone to agglomeration and low impedance matching, the present invention provides a polypyrrole / multi-walled carbon nanotube composite material doped with p-toluenesulfonic acid to improve the impedance matching of carbon nanotubes, and the pair Toluenesulfonic acid doped polypyrrole / multi-walled carbon nanotube composite material has good microwave absorption effect

Method used

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  • P-toluenesulfonic acid doped polypyrrole/multi-walled carbon nanotube composite material

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Embodiment 1

[0038] In this embodiment, a polypyrrole / multi-walled carbon nanotube composite material doped with p-toluenesulfonic acid and its preparation method comprise the following steps:

[0039] (1) Weigh 0.12g of multi-walled carbon nanotubes and 0.12g of sodium dodecylbenzenesulfonate into a beaker, add 100mL of deionized water, and ultrasonically disperse for 60min to obtain a uniformly dispersed solution A;

[0040] (2) Weigh 1.90 g of p-toluenesulfonic acid and 1.90 g of ammonium persulfate and completely dissolve them in deionized water to obtain solution B as an oxidizing agent;

[0041] (3) Measure 0.12g of pyrrole (freshly distilled) into the obtained solution A, ultrasonically disperse for 30min, and obtain solution C;

[0042] (4) Control the reaction temperature at 0-5°C in an ice-water bath, slowly add solution B to solution C dropwise while stirring, continue to stir in the ice bath for 6 hours, alternately wash with water and absolute ethanol, and dry at 80°C After 2...

Embodiment 2

[0045] In this embodiment, a polypyrrole / multi-walled carbon nanotube composite material doped with p-toluenesulfonic acid and its preparation method comprise the following steps:

[0046] (1) Weigh 0.08g of multi-walled carbon nanotubes and 0.12g of sodium dodecylbenzenesulfonate into a beaker, add 100mL of deionized water, and ultrasonically disperse for 60 minutes to obtain a uniformly dispersed solution A;

[0047] (2) Weigh 1.90g of p-toluenesulfonic acid and 1.90g of ammonium persulfate and completely dissolve them in deionized water to obtain solution B as an oxidizing agent;

[0048] (3) Measure 0.12g of pyrrole (freshly distilled) into the obtained solution A, ultrasonically disperse for 30min, and obtain solution C;

[0049] (4) Control the reaction temperature at 0-5°C in an ice-water bath, slowly add solution B to solution C dropwise while stirring, continue to stir in the ice bath for 6 hours, alternately wash with water and absolute ethanol, and dry at 80°C Afte...

Embodiment 3

[0052] In this embodiment, a polypyrrole / multi-walled carbon nanotube composite material doped with p-toluenesulfonic acid and its preparation method comprise the following steps:

[0053] (1) Weigh 0.12g of multi-walled carbon nanotubes and 0.12g of sodium dodecylbenzenesulfonate into a beaker, add 100mL of deionized water, and ultrasonically disperse for 60min to obtain a uniformly dispersed solution A;

[0054] (2) Weigh 5.70g of p-toluenesulfonic acid and 1.90g of ammonium persulfate and completely dissolve them in deionized water to obtain solution B as an oxidizing agent;

[0055] (3) Measure 0.12g of pyrrole (freshly distilled) into the obtained solution A, ultrasonically disperse for 30min, and obtain solution C;

[0056] (4) Control the reaction temperature at 0-5°C in an ice-water bath, slowly add solution B to solution C dropwise while stirring, continue to stir in the ice bath for 6 hours, alternately wash with water and absolute ethanol, and dry at 80°C After 24 ...

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Abstract

The invention provides a p-toluenesulfonic acid doped polypyrrole / multi-walled carbon nanotube composite material and a preparation method thereof. The p-toluenesulfonic acid doped polypyrrole / multi-walled carbon nanotube composite material comprises a multi-walled carbon nanotube serving as a substrate; and polypyrrole used as a coating layer. The p-toluenesulfonic acid doped polypyrrole / multi-walled carbon nanotube composite material is prepared by coating the surface of a multi-walled carbon nanotube with pyrrole under the action of an oxidizing agent and a doping agent, and sodium dodecyl benzene sulfonate is used as a dispersing agent in the preparation process.

Description

technical field [0001] The invention relates to the field of electromagnetic wave absorption composite materials, in particular to a polypyrrole / multi-walled carbon nanotube composite material doped with p-toluenesulfonic acid. Background technique [0002] With the development of radar detection technology and the increasingly serious electromagnetic pollution, electromagnetic wave absorbing materials (wave absorbing materials) with high efficiency and light weight are of great significance. The complex electromagnetic environment requires the absorbing material to have the properties of "thin thickness, light weight, wide absorbing frequency band, and strong reflection loss capability". Due to the advantages of strong absorption, good frequency band compatibility, controllable morphology, light weight, and adjustable conductivity, carbon nanotubes have become one of the most promising wave-absorbing materials. However, due to the high dielectric constant of carbon nanotub...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08K9/10C08K3/04
CPCC08G73/0611C08K9/10C08K3/041
Inventor冯辉霞张靓吕金城蒋海静谭琳陈娜丽
OwnerLANZHOU UNIVERSITY OF TECHNOLOGY