Composite wave-absorbing material preparation method

A composite wave-absorbing material and composite material technology, applied in the field of composite wave-absorbing material preparation, to achieve the effects of high absorption efficiency, low material density, and wide absorption frequency band

Inactive Publication Date: 2014-10-15
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

There are many literatures on the preparation of nickel-copper-zinc ferrite, carbon nanotubes, and polythiophene polymers for absorbing materials, and the preparation technology is also very mature, but the research

Method used

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Embodiment Construction

[0014] The embodiments of the present invention are described in further detail below, but the embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0015] 1. Pretreatment of carbon nanotubes

[0016] Weigh 0.6 g of carbon nanotubes and calcinate them at 520° C. (in a muffle furnace) for 2 h. Then add it to the beaker containing the mixed solution of concentrated sulfuric acid and concentrated nitric acid, V(H2SO4) is 3mL, V(HNO3) is 1mL. Ultrasonic dispersion (30°C water bath) for 30min, heating and stirring in a water bath at 80°C for 2h. After cooling, add distilled water to dilute to 25mL, and keep sealed at room temperature.

[0017] 2. Preparation of nickel-copper-zinc ferrite

[0018] Take by weighing nickel nitrate hexahydrate [Ni(NO3) 26H2O] quality is 0.6332g, zinc nitrate hexahydrate [Zn(NO3) 26H2O] quality is 0.636...

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Abstract

The invention discloses a composite wave-absorbing material preparation method which comprises the following steps: firstly, the hydrothermal synthesis method and the in-situ polymerization are adopted to prepare NiCuZn ferrite coated carbon nanotube/polythiophene composite material; then, structural characterization is adopted to research and analyze the functions of NiCuZn ferrite and polythiophene; finally, a sample vibration magnetometer, a four-point probe conductometer and a vector network analyzer are adopted to carry out performance tests respectively. The composite wave-absorbing material preparation method has the following advantages: the composite wave-absorbing material is wide in microwave absorption frequency band, small in material density, high in absorption efficiency and excellent in combination property, and plays an important role in the fields of stealth technology of military equipment, civil human body safety protection, communication anti-interference and electronic information privacy.

Description

technical field [0001] The invention relates to a preparation method of a composite wave-absorbing material. Background technique [0002] The research and development of microwave-absorbing materials has achieved certain results, but there are still shortcomings such as narrow frequency band, low efficiency, and high surface density, and the application range is limited to a certain extent. Therefore, broadband absorbents are developed and multi-band compatible microwave absorbers are developed. Materials, to achieve high-efficiency absorption is the future development trend of absorbing materials. At the same time, the physical and chemical properties of the material are required to be stable, that is, the absorber remains stable under various physical and chemical conditions (such as light, heat, long-term electromagnetic radiation, etc.). With the development of various electromagnetic wave absorption mechanisms and models, conductive polymer-inorganic nanomaterial com...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08G61/12C08K9/10C08K9/02C08K7/24C08K3/22C09C1/44C09C3/06C04B35/26C04B35/626G01N1/28
Inventor 刘啟明谢宇陈钰康丽王政楠李小祥王灏朱涛
Owner NANCHANG HANGKONG UNIVERSITY
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