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A kind of preparation method of carbon nanotube barium titanate heterostructure composite material

A carbon nanotube and heterostructure technology, applied in the field of wave absorbing materials, can solve problems such as restricting the development of wave absorbing materials, and achieve the effect of improving comprehensive wave absorbing performance, good wave absorbing effect and good absorption rate

Active Publication Date: 2017-04-26
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are gaps in both the macroscopic field of microwave-absorbing materials and the microscopic field of carbon nanotubes applied to microwave-absorbing materials.
On the other hand, this limits the development of absorbing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for preparing a carbon nanotube barium titanate heterostructure composite material, comprising the following steps:

[0038] (1) Add carbon nanotubes to concentrated nitric acid, stir and react for 6 hours at 125°C, the weight ratio of concentrated nitric acid to carbon nanotubes is 100:1; after the reaction, cool and filter, and then use deionized water Cleaning the carbon nanotubes to neutrality;

[0039] (2) Preparation of barium titanate precursor

[0040] Dissolve 5mmol of barium acetate into a mixed solution of 5ml of glacial acetic acid and 20ml of absolute ethanol, stir in a water bath at 60°C for 30min to fully dissolve, and obtain solution A;

[0041] Dissolve 6 mmol of isopropyl titanate into a mixed solution of 10 ml of absolute ethanol and 1 ml of deionized water, stir for 15 min to fully dissolve, and obtain solution B;

[0042] According to the molar ratio of Ba and Ti is 1:1, measure B and A, then add the measured solution B into solution A, m...

Embodiment 2

[0046] A method for preparing a carbon nanotube barium titanate heterostructure composite material, comprising the following steps:

[0047] (1) Add carbon nanotubes to concentrated nitric acid, stir and react for 6 hours at 140°C, the weight ratio of concentrated nitric acid to carbon nanotubes is 50:1; after the reaction, cool and filter, and then use deionized water Cleaning the carbon nanotubes to neutrality;

[0048] (2) Preparation of barium titanate precursor

[0049] Dissolve 6mmol of barium acetate into a mixed solution of 5ml of glacial acetic acid and 20ml of absolute ethanol, stir in a water bath at 60°C for 30min to fully dissolve, and obtain solution A;

[0050] Dissolve 5 mmol of isopropyl titanate into a mixed solution of 10 ml of absolute ethanol and 1 ml of deionized water, stir for 15 min to fully dissolve, and obtain solution B;

[0051] According to the molar ratio of Ba and Ti being 1:1, measure B and A, then add the measured solution B into solution A,...

Embodiment 3

[0055] A method for preparing a carbon nanotube barium titanate heterostructure composite material, comprising the following steps:

[0056] (1) Add carbon nanotubes to concentrated nitric acid, stir and react for 6 hours at 125°C, the weight ratio of concentrated nitric acid to carbon nanotubes is 100:1; after the reaction, cool and filter, and then use deionized water Cleaning the carbon nanotubes to neutrality;

[0057] (2) Preparation of barium titanate precursor

[0058] Dissolve 5mmol of barium acetate into a mixed solution of 5ml of glacial acetic acid and 20ml of absolute ethanol, stir in a water bath at 60°C for 30min to fully dissolve, and obtain solution A;

[0059] Dissolve 5 mmol of isopropyl titanate into a mixed solution of 10 ml of absolute ethanol and 1 ml of deionized water, stir for 15 min to fully dissolve, and obtain solution B;

[0060] According to the molar ratio of Ba and Ti is 1:1, measure B and A, then add the measured solution B into solution A, m...

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Abstract

The invention relates to the field of wave-absorbing materials, and particularly relates to a preparation method of a carbon nano tube barium titanate heterostructure composite material. According to the method, a processed carbon nano tube forms a cladding layer on the surface by using barium titanate, and thus a good absorption effect on an electromagnetic wave is achieved. The method is simple in process and has a good absorption effect.

Description

technical field [0001] The invention relates to the field of wave-absorbing materials, in particular to a method for preparing a carbon nanotube barium titanate heterostructure composite material. Background technique [0002] With the rapid development of modern microwave electronic technology and modern radar, the influence of electromagnetic wave radiation on the environment is increasing day by day. After noise pollution, air pollution and water pollution, electromagnetic wave pollution has become the fourth largest public hazard that threatens human existence. The protection of electromagnetic radiation has attracted more and more attention. According to the protection requirements of daily electromagnetic pollution, designing and preparing absorbing materials is an effective way to solve the hazards of electromagnetic pollution. Therefore, the research on electromagnetic wave absorbing materials is of great significance, and the preparation of absorbing materials with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
Inventor 朱曜峰俞璐军傅雅琴
Owner ZHEJIANG SCI-TECH UNIV
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