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Preparation method of coaxial cable structure MWCNT/Fe3O4/ZnO/PANI microwave absorbant

A microwave absorbent, coaxial cable technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as insufficient binding force and poor wave absorption effect.

Active Publication Date: 2013-05-22
内蒙古海特华材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the microwave-absorbing material prepared by the existing method is limited to binary and ternary, and the bonding force with the matrix is ​​not good enough, resulting in poor microwave-absorbing effect. It provides a coaxial cable structure MWCNT / Fe3O4 Preparation method of / ZnO / PANI microwave absorber

Method used

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  • Preparation method of coaxial cable structure MWCNT/Fe3O4/ZnO/PANI microwave absorbant
  • Preparation method of coaxial cable structure MWCNT/Fe3O4/ZnO/PANI microwave absorbant

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specific Embodiment approach 1

[0013] Specific implementation mode 1: In this implementation mode, a coaxial cable structure MWCNT / Fe 3 o 4 The preparation method of / ZnO / PANI microwave absorber, carries out as follows: one, carry out ultrasonic dispersion to multi-walled carbon nanotube, acetylacetonate iron and triethylene glycol respectively, then mix; Then under nitrogen as protective atmosphere condition, be heated to After boiling and reacting for 20-60 minutes, conduct magnetic separation, collect the solid phase, and then dry to obtain MWCNT / Fe 3 o 4 Nanomaterials; wherein the mass ratio of multi-walled carbon nanotubes to iron acetylacetonate is 1: (2-8), and the mass-volume ratio of multi-walled carbon nanotubes to triethylene glycol is 1 mg: (0.1 mL to 1 mL);

[0014] Two, the MWCNT / Fe that step 2 obtains respectively 3 o 4 Nanomaterials, zinc acetate and triethylene glycol are ultrasonically dispersed, then mixed, and then heated to boiling under nitrogen as a protective atmosphere. After 20...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment differs from Embodiment 1 in that the multi-walled carbon nanotubes in step 1 have a diameter of 30-60 nm and a length of 5-25 μm. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the MWCNT / Fe obtained in step one 3 o 4 Fe in nanomaterials 3 o 4 The thickness of the layer is 2 to 8 nm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a preparation method of a coaxial cable structure MWCNT / Fe3O4 / ZnO / PANI microwave absorbant, and relates to a preparation method of a microwave absorbent, and the method is used for solving the problems that the wave absorption material prepared by adopting the existing method is limited into binary and ternary, and is bad in binding force with matrixes to cause poor wave absorption effect. The preparation method comprises the steps: I preparing an MWCNT / Fe3O4 nanomaterial; II preparing MWCNT / Fe3O4 / ZnO composite powder; III preparing compound water solution; and IV preparing ammonium persulfate aqueous solution, then dropwise adding into the composite aqueous solution, performing constant-temperature reaction under the condition of 0-25 DEG C, then performing magnetic separation, collecting solid phase matters, and drying to obtain the coaxial cable structure MWCNT / Fe3O4 / ZnO / PANI microwave absorbant, thereby completing the preparation method. The preparation method is applied in the field of microwave absorption materials.

Description

technical field [0001] The invention relates to a preparation method of a microwave absorber. Background technique [0002] Due to the rapid development of science and technology in recent years, while high-tech electronic products improve human life, the accompanying electromagnetic radiation also poses serious hazards to human health. Therefore, microwave-absorbing materials are used in television broadcasting, electronic devices and microwave radiation protection. And other civilian research has also been paid more and more attention. In addition, with the development of modern detection and guidance technology, the survivability of weapons is facing a severe test. In order to meet the needs of modern warfare, the wave-absorbing technology that reduces the probability of detection of weapons and equipment has quickly become a research hotspot around the world. [0003] The current microwave absorbing materials can be divided into electric loss type and magnetic loss type...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08K7/00C08K3/04C08K3/22C08L79/02C08L63/00C09K3/00
Inventor 王志江刘晨宇徐用军姜兆华
Owner 内蒙古海特华材科技有限公司
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