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Preparation of hollow glass microsphere / ferrite composite material

A technology of glass microspheres and composite materials, which is applied in the field of preparation of soft magnetic materials, and can solve problems such as high temperature of ferrite films

Inactive Publication Date: 2011-04-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using sol-gel method to prepare ferrite film on the surface of hollow glass microspheres, high temperature is generally required, which does not meet the requirements of "energy saving and emission reduction" for building a harmonious society

Method used

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  • Preparation of hollow glass microsphere / ferrite composite material
  • Preparation of hollow glass microsphere / ferrite composite material
  • Preparation of hollow glass microsphere / ferrite composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 100mL deionized water into a three-necked container, pour in nitrogen to remove the dissolved oxygen in the water and heat it to 20-100℃, accurately weigh out ferrous chloride (FeCl 2 ·4H 2 O) 1g and 0.1-0.5g hollow glass microspheres were added to the three-necked flask, and 40mL of 1mol / L ammonium acetate (CH 3 COONH 4 ) Buffer solution and 20 mL of 0.15% (volume ratio) hydrogen peroxide (H 2 O 2 ) The mixed solution is added dropwise to the solution at a rate of 3-5 mL / min. After the dripping is completed, the constant temperature is continued for 30 minutes, and the obtained sample is cooled and filtered with suction. The sample obtained by suction filtration is dried, and the drying temperature is set at 60-100°C. The powder obtained after drying is the hollow glass microsphere / ferrite composite material.

Embodiment 2

[0017] Add 100mL deionized water into a three-necked container, pour in nitrogen to remove the dissolved oxygen in the water and heat it to 20-100℃, accurately weigh out ferrous chloride (FeCl 2 ·4H 2 O) 1g and 0.1-0.5g hollow glass microspheres were added to the three-necked flask, and 40mL of 2mol / L ammonium acetate (CH 3 COONH 4 ) Buffer solution and 20 mL of 0.15% (volume ratio) hydrogen peroxide (H 2 O 2 ) The mixed solution is added dropwise to the solution at a rate of 3-5 mL / min. After the dripping is completed, the constant temperature is continued for 30 minutes, and the obtained sample is cooled and filtered with suction. The sample obtained by suction filtration is dried, and the drying temperature is set at 60-100°C. The powder obtained after drying is the hollow glass microsphere / ferrite composite material.

Embodiment 3

[0019] Add 100mL deionized water into a three-necked container, pour in nitrogen to remove the dissolved oxygen in the water and heat it to 20-100℃, accurately weigh out ferrous chloride (FeCl 2 ·4H 2 O) 1 and 0.1-0.5g hollow glass microspheres were added to the three-necked flask, and 40mL of 3mol / L ammonium acetate (CH 3 COONH 4 ) Buffer solution and 20mL of 3g / L 0.15% (volume ratio) hydrogen peroxide (H 2 O 2 ) The mixed solution was dropped into the solution at a rate of 4 mL / min. After the dripping is completed, the constant temperature is continued for 40 minutes, and the obtained sample is cooled and suction filtered. The sample obtained by suction filtration is dried, and the drying temperature is set at 60-100°C. The powder obtained after drying is a hollow glass microsphere / ferrite composite material.

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Abstract

The invention discloses a method for preparing hollow glass microsphere / ferrite soft magnetic composite materials. The method can prepare the hollow glass microsphere / ferrite soft magnetic composite materials at a low temperature, so as to effectively reduce the production energy consumption. The method comprises: taking ferrous chloride, ammonium acetate and oxyful as main salt, a buffer solution and a reducing agent respectively to perform ferrite chemical plating on glass microspheres at a temperature of between 20 and 100 DEG C, performing suction filtration and drying on the glass microspheres after reacting for 30 minutes, and obtaining the hollow glass microsphere / ferrite soft magnetic composite materials.

Description

Technical field [0001] The invention relates to a preparation method of soft magnetic material, and more particularly, to a preparation method of a hollow glass microsphere / ferrite composite material. Background technique [0002] Because electroless plating on the surface of powder or fiber can give new properties to the material, making the material have potential huge application prospects in some special fields such as magnetic materials, electromagnetic wave absorption, etc. Therefore, electroless plating on the surface of powder or fiber is used to prepare composite Materials are getting more and more attention. Recently, more researched materials include diamond particles, graphite powder, carbon nanotubes, organic particles, silicon carbide powder and so on. Hollow glass microspheres have the advantages of low density, easy dispersion, smooth surface, low price and regular shape. They are widely used in plastics, coatings, metallurgy, lightweight materials and other fiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
Inventor 于美刘建华王承李松梅黄丽婕魏静
Owner BEIHANG UNIV