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Amorphous nanoparticle liquid metal magnetic fluid and preparation method thereof

A nanoparticle and liquid metal technology, applied in the direction of magnetic objects, nanomagnetism, magnetic liquid, etc., can solve the problems of insufficient stability of liquid metal magnetic fluid, and achieve excellent magnetic properties, low volatility, and good stability

Inactive Publication Date: 2020-06-05
河北地质大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the liquid metal magnetic fluid obtained by using liquid metal is not stable enough

Method used

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  • Amorphous nanoparticle liquid metal magnetic fluid and preparation method thereof
  • Amorphous nanoparticle liquid metal magnetic fluid and preparation method thereof
  • Amorphous nanoparticle liquid metal magnetic fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Preparation of Fe-Co-B amorphous nanoparticles

[0025] Fe-Co-B amorphous nanoparticles can be prepared by chemical reduction method or chemical co-precipitation method. In this example, Fe—Co—B amorphous nanoparticles were prepared by chemical reduction method. Configure FeCl 2 4H 2 O and CoCl 2 ·6H 2 O mixed solution 100ml, wherein, Fe in the mixed solution 2+ and Co 2+ The molar ratio is 2:1. While stirring, add a first predetermined volume of NaBH to the mixed solution 4 solution. In the case of mechanical stirring and ultrasonic dispersion, the first predetermined volume of NaBH can be added to the mixed solution at a uniform speed 4 solution. The first predetermined capacity according to Fe 2+ and Co 2+The molar ratio is determined. Put the mixed solution into a three-necked flask for mechanical stirring and ultrasonic dispersion, then add 30 ml of 0.8 mol NaBH at a rate of 1.5 ml per minute at room temperature 4 solution. Use NaOH to adjust...

Embodiment 2

[0038] Step 1: Preparation of Fe-Co-B amorphous nanoparticles

[0039] Configure FeCl 2 4H 2 O and CoCl 2 ·6H 2 O mixed solution 100ml, in which Fe 2+ and Co 2+ The molar ratio is 3:1. Put the mixed solution into a three-necked flask for mechanical stirring and ultrasonic dispersion, then add 30 ml of 0.8 mol NaBH at a rate of 1.5 ml per minute at room temperature 4 solution. The pH of the solution was adjusted to 11 with NaOH. After mechanical stirring and ultrasonic dispersion for 1 hour, the suspension is centrifuged at high speed to obtain amorphous Fe-Co-B magnetic particles.

[0040] Step 2: Prepare Fe-Co-B@Al by using Fe-Co-B amorphous nanoparticles and Al salt solution 2 o 3 nanoparticles

[0041] Measure 4g of Fe-Co-B nanoparticles, add to 75ml of Al(NO 3 ) 3 A suspension was obtained in solution, Al(NO 3 ) 3 The solution concentration is 0.5mol / L. Add 0.4g PEG-2000 and 1.5g PEG-400 as dispersants to the suspension, and stir evenly with magnetic force....

Embodiment 3

[0049]Step 1: Preparation of Fe-Co-B amorphous nanoparticles

[0050] Configure FeCl 2 4H 2 O and CoCl 2 ·6H 2 O mixed solution 100ml, in which Fe 2+ and Co 2+ The molar ratio is 3:2. Put the mixed solution into a three-necked flask for mechanical stirring and ultrasonic dispersion, then add 35 ml of 0.8 mol NaBH at a rate of 1.5 ml per minute at room temperature 4 solution. The pH of the solution was adjusted to 12 with NaOH. After mechanical stirring and ultrasonic dispersion for 1 hour, the suspension is centrifuged at high speed to obtain amorphous Fe-Co-B magnetic particles.

[0051] Step 2: Prepare Fe-Co-B@Al by using Fe-Co-B amorphous nanoparticles and Al salt solution 2 o 3 nanoparticles

[0052] Measure 4g of Fe-Co-B nanoparticles, add to 75ml of Al(NO 3 ) 3 A suspension was obtained in solution, Al(NO 3 ) 3 The solution concentration is 0.5mol / L. Add 0.4g PEG-2000 and 1.5g PEG-400 as dispersants to the suspension, and stir evenly with magnetic force. ...

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Abstract

The invention provides an amorphous nanoparticle liquid metal magnetic fluid and a preparation method thereof. GaSn liquid metal eutectic alloy is adopted as carrier liquid of the magnetic fluid, Fe-Co-B-coated Al2O3 amorphous nano-particles are adopted as magnetic particles, and the stable, non-toxic and non-volatile amorphous nano-particle liquid metal magnetic fluid is prepared in the liquid metal carrier liquid.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to an amorphous nanoparticle liquid metal magnetic fluid and a preparation method for the amorphous nanoparticle liquid metal magnetic fluid. Background technique [0002] Magnetic fluid is a new type of functional material, because it has the fluidity of liquid and the magnetism of solid at the same time, it has attracted widespread attention and attention. The carrier fluid is an important part of the magnetic fluid. When selecting the magnetic fluid, it is necessary to select the type of the carrier fluid according to the different uses of the magnetic fluid. The carrier fluids of magnetic fluids reported at home and abroad are mainly organic matter and water. However, these organic-based magnetic fluids such as polyphenylene ethers, toluene or n-hexane are generally extremely volatile and have certain toxicity, and are not suitable for applications in the fields of biomedici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/44H01F41/00B82Y25/00
CPCB82Y25/00H01F1/442H01F41/00
Inventor 杨春成刘忠赵素彦
Owner 河北地质大学
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