CoFe/C-CNT wave-absorbing material as well as preparation process and application thereof

A technology of C-CNT and wave-absorbing materials, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of electromagnetic wave pollution and hazards, and achieve the effect of high porosity, low density, and large specific surface area

Pending Publication Date: 2022-03-18
佛山市东鹏陶瓷发展有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One purpose of the present invention is to propose a CoFe / C-CNT wave-absorbing material, which has the advantages of excellent wave-absorbing performance and can solve the current problem of electromagnetic wave pollution on information, communication, and human health.

Method used

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  • CoFe/C-CNT wave-absorbing material as well as preparation process and application thereof
  • CoFe/C-CNT wave-absorbing material as well as preparation process and application thereof
  • CoFe/C-CNT wave-absorbing material as well as preparation process and application thereof

Examples

Experimental program
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preparation example Construction

[0046] The preparation process proposed in this scheme does not need to adopt a complex composite process, and the synthesis process of CoFe / C-CNT wave-absorbing materials can be completed directly through simple stirring and calcination, and the entire reaction process is carried out in aqueous solution without organic solvents, so , the invention can improve the production efficiency of the CoFe / C-CNT wave absorbing material and realize large-scale mass production.

[0047] Further, in step S1, according to molar calculation, weigh 1-5mmol Co(NO 3 ) 2 ·6H 2 O and 1-5mmolFe(NO 3 ) 3 9H 2 O and mixed in 20ml deionized water to make solution A.

[0048] Further, in step S2, 12-60 mmol of 2-methylimidazole was weighed and mixed in 80 ml of deionized water to prepare solution B according to molar weight calculation.

[0049] Further, in step S3, the cleaning solution is deionized water or absolute ethanol. Nitrate ions are easily soluble in water and absolute ethanol, and ...

Embodiment 1-4

[0058] Prepare materials according to the corresponding raw materials listed in Table 1 below, and prepare the CoFe / C-CNT wave-absorbing materials of Examples 1-4 according to the process parameters listed in Table 1 and the following steps.

[0059] S1, Co(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O was mixed in 20ml deionized water to prepare solution A;

[0060] S2, dissolving 2-methylimidazole in 80ml deionized water to prepare solution B;

[0061] S3, adding the solution A into the solution B for stirring, then filtering to obtain a centrifugal precipitate, washing the centrifugal precipitate with a cleaning solution, and then drying the centrifugal precipitate to obtain a MOFs precursor;

[0062] S4. Sintering the MOFs precursor prepared in step S3 under a protective gas atmosphere to prepare a CoFe / C-CNT material.

[0063] Wherein, the cleaning liquid is deionized water; the protective gas is nitrogen; the drying method is blast drying.

[0064] Table 1

[0065] ...

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Abstract

The invention discloses a CoFe/C-CNT wave-absorbing material as well as a preparation process and application thereof. The invention relates to a preparation process of a CoFe/C-CNT wave-absorbing material. The preparation process comprises the following steps: S1, mixing Co (NO3) 2.6 H2O and Fe (NO3) 3.9 H2O to prepare a solution A; s2, dissolving 2-methylimidazole to prepare a solution B; s3, adding the solution A into the solution B, stirring, filtering, washing and drying to obtain an MOFs precursor; and S4, sintering the MOFs precursor prepared in the step S3 in a protective atmosphere, so as to prepare the CoFe/C-CNT material. According to the preparation process of the CoFe/C-CNT wave-absorbing material, the CoFe/C-CNT wave-absorbing material with excellent wave-absorbing performance is prepared, and the problem that current electromagnetic wave pollution is harmful to information, communication and human bodies can be solved.

Description

technical field [0001] The invention relates to the technical field, in particular to a CoFe / C-CNT wave-absorbing material and its preparation process and application. Background technique [0002] At present, although electromagnetic waves bring people a comfortable, fast and convenient life, they also produce electromagnetic pollution virtually. On the one hand, electronic instruments will generate a large amount of electromagnetic waves during work, which will pose a threat to our health; on the other hand, the chaotic electromagnetic waves in the air also flood people's working and living spaces, destroying people's stable ecological environment. [0003] Therefore, how to reduce the harm of electromagnetic pollution to information, communication and people's living and working environment has been highly concerned by governments all over the world, and has also become the focus and focus of research and discussion by experts and scholars from various countries. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
CPCH05K9/0081
Inventor 李莹钟保民李智鸿
Owner 佛山市东鹏陶瓷发展有限公司
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