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A kind of preparation method of znow whisker surface composite layer

A surface composite and whisker technology, which is applied in the field of microwave-absorbing materials, can solve the problems of poor low-frequency wave-absorbing performance of four-needle ZnOw whiskers and cannot effectively meet low-frequency wave-absorbing performance, and achieve excellent broadband and high absorption rate , the effect of large dielectric loss

Active Publication Date: 2018-04-13
海门市创豪工业设计有限公司
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Problems solved by technology

However, the low-frequency wave-absorbing performance of the four-needle ZnOw whiskers prepared in the prior art is poor, and cannot effectively meet the low-frequency wave-absorbing performance

Method used

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  • A kind of preparation method of znow whisker surface composite layer
  • A kind of preparation method of znow whisker surface composite layer

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Embodiment Construction

[0020] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] refer to Figure 1 to Figure 2 , the preferred embodiment of the present invention provides a kind of preparation method of ZnOw whisker surface composite layer, is made up of following preparation steps:

[0022] Step 1: Nickel core @Mn x Mg y Zn 1-x-y Fe 2 o 4 Preparation of nanoparticles with ferrite shell structure;

[0023] Step 2: chemical deposition of localized iron on the surface of four-needle ZnOw whiskers;

[0024] Step 3: Four-pin ZnOw whisker surface iron and nickel core @Mn x Mg y Zn 1-x-y Fe 2 o 4 Composite co-deposition of ferrite shell-structured nanoparticles.

[0025] Described step one is specifically:

[0026] ① Preparation of reaction solution: Add manganese acetate, magnesium nitrate and ferrous acetate with concentrations of analytically pure to deionized water to form manganese acetate with a conc...

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Abstract

The invention relates to a preparation method of a ZnOw whisker surface composite layer, by depositing MnxMgyZn1-x-yFe2O4 ferrite on the surface of metal nickel nanoparticles to form core-shell structure nanoparticles; Based on the local chemical deposition of iron, the composite co-deposition of core-shell nanoparticles was carried out, so that the composite layer of iron and nickel core @MnxMgyZn1‑x‑yFe2O4 ferrite shell structure was prepared on the surface of the four-needle ZnOw whisker, which fully The four-pin ZnOw whisker has the characteristics of large dielectric loss when used as a wave-absorbing material, and combines the broadband and good compatibility of the spinel-type MnxMgyZn1‑x‑yFe2O4 ferrite properties as well as the excellent hysteresis and eddy current losses of nickel nanoparticles.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing materials, in particular to a method for preparing a ZnOw whisker surface composite layer. Background technique [0002] With the development of science and technology, the electromagnetic radiation pollution produced by radio, television, communication and electric power is becoming more and more serious; in addition, in the military field, the requirements for stealth technology of weapons and equipment are also getting higher and higher. Therefore, it is necessary to develop a high-performance Absorbing materials are of great significance. Four-needle ZnOw whisker, as a polar monomer, has unique wave-absorbing characteristics. It has a four-cornered needle-like structure, which has a large dielectric loss during the wave-absorbing process, and the four-needle ZnOw whisker has a piezoelectric effect. , can convert incident electromagnetic wave energy into electrical energy or other energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/34B22F1/02B82Y40/00B82Y30/00
CPCC23C18/34B82Y30/00B82Y40/00B22F1/16
Inventor 赵明王学良陈睿王宇
Owner 海门市创豪工业设计有限公司
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