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Cobalt/polypyrrole nano-composite wave-absorbing material and preparation method thereof

A composite wave absorbing material and pyrrole nanotechnology, applied in the field of wave absorbing materials, can solve the problems of poor anti-oxidation ability and anti-corrosion ability of magnetic metal powder, and achieve the effect of excellent wave absorbing effect

Active Publication Date: 2014-11-05
YANCHENG INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the oxidation resistance and corrosion resistance of magnetic metal powder are poor, which makes it difficult to apply in practice. Improving the oxidation resistance and corrosion resistance of ultrafine metal powder is the key to its practical application.

Method used

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  • Cobalt/polypyrrole nano-composite wave-absorbing material and preparation method thereof
  • Cobalt/polypyrrole nano-composite wave-absorbing material and preparation method thereof
  • Cobalt/polypyrrole nano-composite wave-absorbing material and preparation method thereof

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Embodiment 1

[0026] (1) With CoCl 2 ·6H 2 O is the raw material, NaBH 4 And NaOH as the reducing agent, oleic acid as the dispersant, and 0.7mol CoCl 2 ·6H 2 O was dissolved in 150mL of distilled water, and 0.04mol of oleic acid was added dropwise to obtain solution A, and 0.3mol NaOH and 0.6mol NaBH 4 Prepare 15mL solution B with distilled water, and slowly drop solution B into solution A under a water bath at 40°C at a rate of 2 seconds / drop while stirring vigorously;

[0027] (2) After the solution B has been added dropwise, continue to stir for 30 minutes and age for 30 minutes; then centrifuge, and wash the precipitated product with deionized water for 2 to 3 times, anhydrous ethanol for 2 to 3 times, and vacuum dry at 60°C 24h, heat preservation at 500℃ for 2h under the protection of nitrogen to obtain gray-black nano cobalt powder;

[0028] (3) Add 0.1 mol of pyrrole monomer and 20% of the pyrrole monomer mass of nano cobalt powder to 35 mL of hydrochloric acid solution (0.1 mol / L), and u...

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Abstract

The invention discloses a cobalt / polypyrrole nano-composite wave-absorbing material and a preparation method thereof. The method includes: adopting CoCl2.6H2O as the raw material and taking NaBH4 as a reducing agent, firstly synthesizing nano-cobalt powder, then placing the nano-cobalt powder and a pyrrole monomer in a hydrochloric acid solution, and carrying out in situ polymerization to obtain the cobalt / polypyrrole nano-composite wave-absorbing material with a core-shell structure. By adopting the liquid phase chemical reduction technique and the in-situ polymerization technique, the cobalt / polypyrrole nano-composite wave-absorbing material with excellent wave-absorbing properties can be prepared.

Description

Technical field [0001] The invention relates to the field of absorbing materials, in particular to a cobalt / polypyrrole nano composite absorbing material and a preparation method thereof. Background technique [0002] Electromagnetic wave is a typical longitudinal wave generated by mutually perpendicular electric and magnetic fields through in-phase electromagnetic oscillation. Its propagation direction is perpendicular to the directions of the electric and magnetic fields at the same time, which can realize long-distance transmission of information and energy. Studies have shown that excessive electromagnetic radiation can cause obstacles to the nervous system, immune system, reproductive system and blood circulation system, and may even induce serious diseases including various cancers. In the electromagnetic wave environment for a long time, the tissues and organs in the human body that are damaged by electromagnetic waves and can repair themselves in the future can become fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K3/08C08L79/04B22F9/24
Inventor 罗驹华吴兆丰毛洪凯王旭李涛
Owner YANCHENG INST OF TECH
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