Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing two-layer decorative iron-based magnetic materials

A magnetic material, iron-based technology, applied in the field of preparation of iron-based magnetic materials, can solve the problems of particle agglomeration, unstable solubility of nanoparticles, etc.

Inactive Publication Date: 2015-04-08
林进谷
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coated with organic polymers, it is easy to cause particle agglomeration, and the solubility of nanoparticles is unstable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dissolve ferric chloride and potassium oxalate in ethylene glycol to prepare a mixed solution, the concentration of ferric chloride in ethylene glycol solution is 0.2mol / L, the concentration of potassium oxalate in ethylene glycol solution is 1mol / L, chlorine The molar ratio of ferric chloride to potassium oxalate is 1:4; add ethylenediamine to the above mixed solution, stir and sonicate to obtain a homogeneous suspension, and the molar ratio of ferric chloride to ethylenediamine is 1:6.5.

[0018] Transfer the suspension into a polytetrafluoroethylene-lined stainless steel autoclave for solvothermal reaction at a temperature of 180°C and a reaction time of 15 hours, keeping the pressure of the reaction system within 10 atmospheres, and naturally cooling to room temperature after the reaction; Wash the precipitate by centrifugation with deionized water or absolute ethanol, remove the solvent in the precipitate, and dry at room temperature to obtain magnetic nanoparticles...

Embodiment 2

[0022] Ferric chloride and potassium oxalate are dissolved in ethylene glycol to prepare a mixed solution. The concentration of ferric chloride in ethylene glycol solution is 0.35mol / L, and the concentration of potassium oxalate in ethylene glycol solution is 1.25mol / L. The molar ratio of ferric chloride to potassium oxalate is 1:6; add ethylenediamine to the above mixed solution, stir and sonicate to obtain a homogeneous suspension, and the molar ratio of ferric chloride to ethylenediamine is 1:8.7.

[0023] Transfer the suspension into a polytetrafluoroethylene-lined stainless steel autoclave for solvothermal reaction at a temperature of 210°C and a reaction time of 10 hours, keeping the pressure of the reaction system within the range of 15 atmospheres, and naturally cooling to room temperature after the reaction; Wash the precipitate by centrifugation with deionized water or absolute ethanol, remove the solvent in the precipitate, and dry at room temperature to obtain magne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing two-layer decorative iron-based magnetic materials. The method comprises the steps of (1) preparing of magnetic nano-particles; (2) silicon coating. According to the magnetic materials, organics are used for performing surface modification on iron-based nano magnetic materials, and the surfaces are coated with silicon dioxide, accordingly, the magnetic materials have stable structures and high magnetic activity.

Description

technical field [0001] The invention relates to a preparation method of a double-layer modified iron-based magnetic material. Background technique [0002] In recent ten years, magnetic nanomaterials have received great attention, and they have broad application prospects in the fields of mechanics, electronics, optics, chemistry and biology. By grafting a variety of functional groups with different properties on the surface of nano-magnetic particles, the nano-materials have the advantages of easy separation and identification while achieving multi-functionality. Therefore, the preparation and surface modification of magnetic nanoparticles occupy an important position in the current nanoscience research, and the key technology is to control the size and surface properties of magnetic particles. In the existing preparation methods, it is not difficult to control the size, but the surface functional group modification and surface electrical control technology still need to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/02H01F1/01
Inventor 王中克
Owner 林进谷