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Preparation method of carbon nano tube barium titanate heterostructure composite material

A technology of carbon nanotubes and heterogeneous structures, which is applied in the field of microwave-absorbing materials, can solve problems such as limiting the development of microwave-absorbing materials, and achieve the effects of improving comprehensive microwave-absorbing performance, good microwave-absorbing effect, and improving bonding firmness

Active Publication Date: 2015-03-25
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

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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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PUM

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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 involves the field of suction materials, which specifically involves a preparation method for a carbon nanotuba titanate titanic acid composite material. Background technique [0002] With the rapid development of modern microwave electronic technology and modern radar, the impact of electromagnetic wave radiation on the environment is increasing. After secondary noise pollution, air pollution, and water pollution, electromagnetic wave pollution has become the fourth largest public harm to threaten human survival.The protection of electromagnetic radiation has increasingly attracted people's attention.In response to the protection requirements of daily electromagnetic pollution, design and preparation of wave absorption materials are an effective way to solve the hazard of electromagnetic pollution.Therefore, the study of electromagnetic wave absorption materials is of great significance, and the preparation of excellent suction materials has ...

Claims

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Application Information

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Patent Type & Authority Applications(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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