Tetrapod-like zinc oxide/ferrite film material and preparation method thereof

A tetragonal, ferrite technology

Inactive Publication Date: 2010-12-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it possible to coat ferrite films on particles or powder substrates with poor heat resistance to prepare high-performance absorbing materials.

Method used

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  • Tetrapod-like zinc oxide/ferrite film material and preparation method thereof
  • Tetrapod-like zinc oxide/ferrite film material and preparation method thereof
  • Tetrapod-like zinc oxide/ferrite film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Get 0.2 g of tetragonal zinc oxide whiskers, rinse with deionized water repeatedly and set aside;

[0032] (2) Add 100ml of deionized water to the four-necked flask, magnetically stir and feed in protective gas nitrogen, and heat to 80C;

[0033] (3) keep warm and add tetragonal zinc oxide whiskers, stir (300r / min);

[0034] (4) Add 0.2mol / L of FeCl dropwise at a rate of 1mL / min and 4mL / min respectively 2 4H 2 10 mL of O solution, and 60 mL of 3 mol / L CH mixed at a volume ratio of 1:2 3 COONH 4 solution and 2g / L NaNO 2 solution, use a pH meter to measure the pH value of the feedback plating solution, and add NaOH solution dropwise to keep the pH of the reaction solution in the four-necked flask during the entire electroless plating process between 7-8;

[0035] (5) After reacting for 10 minutes, filter and rinse with deionized water repeatedly to obtain the product.

[0036] After the product is observed by SEM, the thickness of the ferrite layer is 10-100nm. ...

Embodiment 2

[0038] (1) Take 1 g of tetragonal zinc oxide whiskers, wash them repeatedly with deionized water and set aside;

[0039] (2) Add 150ml of deionized water into the four-neck flask, stir it magnetically and pass in protective gas nitrogen, and heat to 70°C;

[0040] (3) After the temperature is constant, add tetragonal zinc oxide whiskers and stir (400r / min);

[0041] (4) Add 0.4mol / L of FeCl dropwise at a rate of 2mL / min and 5mL / min respectively 2 4H 2 10 mL of O solution, and 60 mL of 5 mol / L CH mixed at a volume ratio of 1:2 3 COONH 4 solution and 3g / L NaNO 2 Solution, use a pH meter to measure the pH value of the feedback plating solution, and add NaOH solution dropwise to keep the pH of the reaction solution in the four-necked flask during the entire electroless plating process between 7-8;

[0042] (5) react for 30 minutes, and repeatedly filter and wash with deionized water to obtain the product.

[0043] After the product is observed by SEM, the thickness of the fe...

Embodiment 3

[0045] (1) Get 0.5 g of tetragonal zinc oxide whiskers, rinse with deionized water repeatedly and set aside;

[0046] (2) Add 100ml of deionized water into the reaction vessel, stir it magnetically and pass in protective gas nitrogen, and heat to 60°C;

[0047] (3) After the temperature is constant, add tetragonal zinc oxide whiskers and stir (300r / min);

[0048] (4) Add 0.4mol / L of FeCl dropwise at a rate of 2mL / min and 5mL / min respectively 2 4H 2 10 mL of O solution, and 60 mL of 3 mol / L CH mixed at a volume ratio of 1:2 3 COONH 4 solution and 2g / L NaNO 2solution, use a pH meter to measure the pH value of the feedback plating solution, and drip ammonia solution to keep the pH of the reaction solution in the reaction vessel during the entire electroless plating process between 7-8;

[0049] (5) react for 20 minutes, repeatedly filter and rinse with deionized water to obtain the product.

[0050] After the product is observed by SEM, the thickness of the ferrite layer is...

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Abstract

The invention discloses a tetrapod-like zinc oxide whisker / ferrite film material and a preparation method thereof. The tetrapod-like zinc oxide whisker / ferrite film material has good wave absorbing performance. The preparation method for the tetrapod-like zinc oxide whisker / ferrite film material realizes chemical plating of ferrite on the surface of the tetrapod-like zinc oxide whisker under the condition of the low temperature of between 60 and 80DEG C, and successfully prepares a layer of ferrite film on the surface of the tetrapod-like zinc oxide whisker.

Description

technical field [0001] The invention relates to a quadrangular zinc oxide / ferrite film material and a preparation method thereof, in particular to a quadrangular zinc oxide whisker / ferrite film prepared by chemically plating a ferrite film on the surface of a quadrangular zinc oxide whisker. Oxygen thin film material method. Background technique [0002] Zinc oxide is a multifunctional metal oxide material, which is widely used in chemical industry, light industry, electronics and other fields. In addition to the semiconductor, piezoelectric and antibacterial functions similar to ZnO powder materials, the tetragonal zinc oxide whiskers also have high strength, high modulus, high temperature, wear resistance, shock absorption, Features such as noise reduction. In the 5-18GHz band, its wave absorption is 5-16.68dB, which is a dielectric loss material. In addition, the apparent specific gravity of zinc oxide whiskers is 0.01-0.5, and using it to make wave-absorbing materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/16C30B29/62C30B33/00C23C18/00
Inventor 于美周为刘建华李松梅祁晋豫
Owner BEIHANG UNIV
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