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Method for preparing ITO/porous carbon composite wave-absorbing material by taking In-MOFs as template

A composite wave absorbing material, porous carbon technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of complex preparation methods, high equipment requirements, and high costs, and achieve simple follow-up processing, high equipment requirements, and high costs. Effect

Active Publication Date: 2020-02-04
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of complex preparation methods, high equipment requirements and high cost in existing carbon-based microwave absorbing materials, and provides a method for preparing ITO / porous carbon composite absorbing materials using In-MOFs as a template

Method used

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  • Method for preparing ITO/porous carbon composite wave-absorbing material by taking In-MOFs as template
  • Method for preparing ITO/porous carbon composite wave-absorbing material by taking In-MOFs as template
  • Method for preparing ITO/porous carbon composite wave-absorbing material by taking In-MOFs as template

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specific Embodiment approach 1

[0026] Specific implementation mode 1: This implementation mode is a method for preparing ITO / porous carbon composite wave-absorbing materials using In-MOFs as a template, specifically according to the following steps:

[0027] 1. Dissolve indium trichloride tetrahydrate, tin tetrachloride pentahydrate, terephthalic acid and triethylamine in deionized water together, then transfer to an autoclave, and keep warm at 150℃~160℃ for 18h~20h , the obtained product was washed with deionized water and absolute ethanol alternately and centrifuged three times; finally placed in a vacuum oven and dried at 80°C to 85°C under vacuum conditions to obtain In 2-x sn x (OH) 3 (BDC) 1.5 white crystals;

[0028] The molar ratio of the indium element in the described indium trichloride tetrahydrate to the tin element in the tin tetrachloride pentahydrate is (4~12):1;

[0029] The mol ratio of described terephthalic acid and triethylamine is (1~1.1):1;

[0030] The mol ratio of described tin ...

specific Embodiment approach 2

[0033]Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mol ratio of the indium element in the tetrahydrate indium trichloride described in the step 1 and the tin element in the pentahydrate tin tetrachloride is 12: 1. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the molar ratio of the indium element in the tetrahydrate indium trichloride described in step one to the tin element in the pentahydrate tin tetrachloride is 9:1. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for preparing a composite wave-absorbing material, and concretely relates to a method for preparing an ITO / porous carbon composite wave-absorbing material by taking In-MOFs as a template. The method for preparing the ITO / porous carbon composite wave-absorbing material by taking In-MOFs as the template is provided to solve the technical problems of complex preparation method, high device requirements and high cost of existing carbon-based microwave-absorbing materials. The method comprises the following steps: 1, preparation of the In-MOFs template; and 2, pyrolysis. Compared with preparation methods of the existing carbon-based microwave-absorbing materials with the problems of complex preparation method, high device requirement and high cost, the preparation method of the invention has the advantages of simple process, low production cost, simplicity and convenience in subsequent treatment, and no complex synthesis device, and is suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a method for preparing a composite wave-absorbing material. Background technique [0002] Microwave absorbing materials can effectively absorb radar wave detection signals and reduce the risk of target exposure. Absorbing materials are the key to stealth technology, and new absorbing materials are gradually developing in the direction of light weight, thin thickness, broadband, and strong absorption. In recent years, porous carbon materials based on MOFs have attracted extensive attention due to their advantages such as low density, high specific surface area, certain pore size, good chemical stability, and strong electromagnetic attenuation ability. metal organic framework compound In 2 (OH) 3 (BDC) 1.5 It has high thermal stability, and also has the advantages of large specific surface area, high porosity, and simple preparation process, and is suitable for mass production. The carbon material obtained by using it as a pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 刘崇波马兴瑾王芳黄书懿
Owner NANCHANG HANGKONG UNIVERSITY
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