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Flexible hybrid carbon wave-absorbing nanopaper and production method thereof

A technology of carbon nano paper and carbon nano, applied in the direction of carbon nano tubes, chemical instruments and methods, nano carbon, etc., can solve the problems of difficult operation of carbon nano paper and uneven dispersion of carbon nano tubes, and achieve wide application range and excellent preparation process Simple, operability-enhancing effects

Inactive Publication Date: 2019-01-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a flexible hybrid carbon nano-absorbing paper and a preparation method thereof. The carbon nano-paper prepared by the method has higher tensile strength, and also overcomes the Problems of uneven dispersion of existing carbon nanotubes and difficult handling of carbon nanopaper

Method used

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  • Flexible hybrid carbon wave-absorbing nanopaper and production method thereof
  • Flexible hybrid carbon wave-absorbing nanopaper and production method thereof
  • Flexible hybrid carbon wave-absorbing nanopaper and production method thereof

Examples

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Embodiment 1

[0033] A preparation method of flexible hybrid carbon nano-absorbing paper, specifically comprising the following steps:

[0034] Step 1, prepare Fe 3 o 4 / MWCNTs hybrid particle

[0035] Dissolve 0.8g of MWCNTs and 0.8g of polyvinylpyrrolidone in 400mL of deionized water, and then ultrasonically disperse for 50min to obtain a suspension; add 1.6g of FeCl to the suspension in turn 3 ·6H 2 O and 0.5904 g FeCl 2 4H 2 O, ultrasonically disperse for 50 minutes after the addition is complete, so that the inorganic crystal solid particles are fully dissolved in deionized water to obtain a mixed solution;

[0036] Add ammonia water dropwise to the mixed solution B at a stirring speed of 40r / min, and the dropping speed of ammonia water is 2s / drop, and detect the pH value of the system during the dropping process, when the pH value of the mixed solution B is detected to be 11 Stop the dropwise addition, then react for 3h at a stirring speed of 40r / min, and the reaction solution i...

Embodiment 2

[0044] The preparation method is exactly the same as that of Example 1, except that in step 3 of Example 2, the preparation of EP / Fe 3 o 4 The EP used in / MWCNTs flexible hybrid carbon nano-absorbing paper is epoxy resin E-51.

Embodiment 3

[0046] The preparation method is exactly the same as that of Example 1, except that in step 3 of Example 3, the preparation of EP / Fe 3 o 4 The EP used in / MWCNTs flexible hybrid carbon nano-absorbing paper is epoxy resin E-42.

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Abstract

The invention discloses a flexible hybrid carbon wave-absorbing nanopaper and a production method thereof. The production method comprises the following steps: preparing Fe3O4 / MWCNTs hybrid particles;preparing Fe3O4 / MWCNTs carbon nanopaper; and producing EP / Fe3O4 / MWCNTs hybrid carbon wave-absorbing nanopaper by using a vacuum filtration technology and an epoxy resin assisted film formation technology. The EP / Fe3O4 / MWCNTs hybrid carbon wave-absorbing nanopaper is produced by preparation of an Fe3O4 / MWCNTs mixed solution with a suitable ratio, ultrasonic dispersion, vacuum suction filtration and impregnation. EP is added to carbon nanopaper, the thickness of the carbon nanopaper can be changed by controlling the use amount of the EP, and the structure of the nanopaper can be hanged by changing the film forming manner; and the addition of a small amount of the EP makes the carbon nanopaper with greatly improved toughness and tensile strength obtained, and the flexible hybrid carbon nanopaper can bring convenience for later process operation and large-scale production.

Description

technical field [0001] The invention belongs to the technical field of stealth wave-absorbing materials, and in particular relates to a flexible hybrid carbon nano wave-absorbing paper and a preparation method thereof. Background technique [0002] The absorbing material can make the electromagnetic wave projected on the surface of the material enter the interior of the material, and convert the energy of the electromagnetic wave into heat energy, so as to attenuate the radar wave. In this process, the electromagnetic wave has no reflection, or less reflection, so as to realize the purpose of detecting the stealth of the target and preventing radar detection. [0003] Carbon nanotube nanopaper is a kind of nano wave-absorbing material. At present, the preparation methods of carbon nanopaper include vacuum filtration method, ordinary papermaking process method and load mixed molding method. A kind of ultra-thin carbon nanotube paper has been prepared by the process method, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14C01B32/158C01G49/08C09K3/00
CPCC01G49/08C01P2004/01C04B26/14C04B2201/50C09K3/00C01B32/158C04B24/32C04B14/026C04B14/308
Inventor 焦剑王佳邵雨滴陶晋磊
Owner NORTHWESTERN POLYTECHNICAL UNIV
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