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Three-layer-structured polyaniline@molybdenum disulfide@ferriferrous oxide composite nanowire wave-absorbing material and preparation method

A technology of molybdenum disulfide and three-layer structure, which is applied in the direction of electrical components, magnetic field/electric field shielding, etc., to achieve the effect of improving impedance matching performance and microwave absorption performance

Inactive Publication Date: 2018-04-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there have been no literature reports and developments: 1. Conductive polymer polyaniline, molybdenum disulfide, and magnetic nanomaterials for orderly compounding; 2. Composite materials for electrical and magnetic properties research

Method used

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  • Three-layer-structured polyaniline@molybdenum disulfide@ferriferrous oxide composite nanowire wave-absorbing material and preparation method
  • Three-layer-structured polyaniline@molybdenum disulfide@ferriferrous oxide composite nanowire wave-absorbing material and preparation method

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preparation example Construction

[0024] The preparation method steps are as follows:

[0025] Step 1: Sodium molybdate and aniline monomer synthesize molybdenum polysalt nanowire;

[0026] Step 2: Prepare molybdate nanowires by in-situ polymerization to obtain polyaniline@molybdenum polyacidate nanowires;

[0027] Step 3: Polyaniline@molybdenum polyacid salt nanowires are prepared by hydrothermal reaction in the presence of a reducing agent to obtain polyaniline@molybdenum disulfide composite nanowires;

[0028] Step 4: In order to improve the impedance matching performance of polyaniline@molybdenum disulfide composite nanowires to electromagnetic waves, polyaniline@molybdenum disulfide@ferric oxide composite nanowires were prepared again by hydrothermal reaction.

Embodiment

[0030] 1. Synthesis of molybdenum polyacid salt nanowires

[0031] Dissolve 2-3g ammonium molybdate tetrahydrate and 2-3g aniline monomer in 30-50ml deionized water, and then add 1M hydrochloric acid solution dropwise to the mixed solution under constant stirring until a white precipitate appears (approx. 3-5ml), then stirred and reacted at 40-60°C for 2-6 hours, filtered, washed 3 times with pure ethanol, and dried at 60°C to obtain white molybdenum polyacid salt nanowires.

[0032] 2. Preparation of polyaniline@molybdenum polyacid salt nanowires

[0033] Weigh 2-5g of the above-prepared molybdenum polyacid salt nanowires and 2.5-4g of ammonium molybdate tetrahydrate, add 400ml of deionized water, stir to dissolve them all, quickly add 4-7g of ammonium persulfate, and then stir vigorously Adjust the pH of the above system to 2 with 1M hydrochloric acid solution, and then start the reaction for 6 hours. Stop stirring, filter, wash once with deionized water, then wash three t...

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Abstract

The invention relates to a three-layer-structured polyaniline@molybdenum disulfide@ferriferrous oxide composite nanowire wave-absorbing material and a preparation method. The method comprises: reacting sodium molybdate with an aniline monomer to obtain polymolybdate nanowire, carrying out an in-situ polymerization reaction to obtain uniform polyaniline@polymolybdate nanowire, growing a molybdenumdisulfide sheet layer on polyaniline nanowire in a vertical self-assembly manner through a hydrothermal reaction, and modifying the surface of polyaniline@molybdenum disulfide composite nanowire withferriferrous oxide ferromagnetic nanoparticles. The impedance matching performance of the polyaniline@molybdenum disulfide@ferriferrous oxide composite material is improved, the magnetic loss of magnetic nanoparticles is fully utilized, and the microwave-absorbing performance of the composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials and fine chemicals, and relates to a polyaniline@molybdenum disulfide@ferric oxide composite nanowire wave-absorbing material with a three-layer structure and a preparation method. Background technique [0002] In recent years, with the rapid development of information technology, microwave absorption, attenuation, and shielding materials have attracted more and more attention in terms of electromagnetic interference. It can be seen from the classical electromagnetic interference theory that the absorbing performance of the absorber mainly depends on the dielectric loss and magnetic loss to achieve excellent characteristics. In addition, the electromagnetic absorption characteristics are mainly determined by factors such as shape, geometry and microstructure. Among a large number of absorbing materials, many high dielectric loss absorbing materials such as conductive polymers, carbon-...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08K3/30C08K3/22C08K7/00C08G73/02H05K9/00
Inventor 张卫东颜红侠黄英张雪尚蓓蓉朱文峰齐暑华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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