Method for separating nanometer aluminum powder with different particle sizes

A technology of nano-aluminum powder and particle size, which is applied in the direction of solid separation, chemical instruments and methods, and the separation of solids from solids with airflow, etc. It can solve the problems of heavy separation equipment, complicated and expensive separation procedures, and achieve the separation effect Good, simple operation, less loss effect

Active Publication Date: 2016-10-26
河南索顿新材料有限公司
5 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] Although these methods have good separation effects, the separation equipment is bulky and expensive, and the separation proc...
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Method used

The inventor finds that the method of ultrasonic vibration is used to assist the dispersion of nano-aluminum powder in dispersant, which can effectively break the agglomeration of nano-aluminum powder, so that nano-aluminum powder is evenly dispersed in dispersant, and the longer the time of ultrasonic vibration is The longer the time, the better the dispersion effect, but if the time of ultrasonic vibration is too long, the dispersant will volatilize in large quantities, which will reduce the dispersion effect. Therefore, the present invention preferably uses the method of ultrasonic vibration to assist the dispersion of nano aluminum powder. The time is 2 to 6 hours, preferably 3 to 5 hours, such as 4 hours.
The inventors have found that the above-mentioned aluminum paste containing a large amount of aluminum dust is disposed of as waste, which not only causes a waste of resource...
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Abstract

The invention provides a method for separating nanometer aluminum powder with different particle sizes. The method is to disperse the nanometer aluminum powder in a dispersing agent; a dispersing system is centrifugated; and the gradient separation of the nanometer aluminum powder with different particle sizes is realized through gradual reduction of the centrifugal speed. The method, provided by the invention, is simple, feasible, high in separation efficiency and excellent in separation effect; and the particles sizes of all sections of obtained nanometer aluminum powder are not intersected and overlapped.

Application Domain

Gas current separation

Technology Topic

NanometreNanotechnology +1

Image

  • Method for separating nanometer aluminum powder with different particle sizes
  • Method for separating nanometer aluminum powder with different particle sizes
  • Method for separating nanometer aluminum powder with different particle sizes

Examples

  • Experimental program(6)

Example Embodiment

[0092] Example 1
[0093] Take the nano aluminum powder prepared in 1g (one), disperse it in 30mL of absolute ethanol, oscillate it ultrasonically for 4 hours, put it into a centrifuge tube after the temperature of the beaker drops, centrifuge at 4000rpm for 5 minutes, pour the upper liquid Put it into a beaker and mark it as No. 1. The nano aluminum powder at the bottom of the centrifuge tube was deposited and used in Example 2.

Example Embodiment

[0094] Example 2
[0095] Add 30 mL of dispersant absolute ethanol to the nano aluminum powder deposited on the bottom of the centrifuge tube in Example 1. After ultrasonic vibration for 10 minutes, centrifuge at 3500 rpm for 5 minutes, pour the upper liquid into a beaker and mark it as No. 2. The upper suspension was weighed, and the nano aluminum powder deposited on the bottom of the centrifuge tube was used in Example 3.

Example

[0096] Examples 3-8
[0097] Repeat Example 2, the only difference is that the rotation speed of the centrifugation is 3000rpm, 2500rpm, 2000rpm, 1500rpm, 1000rpm, 500rpm, respectively, and the obtained components are marked as No. 3, No. 4, No. 5, No. 6, No. 7 and No. 8 respectively. .

PUM

PropertyMeasurementUnit
Viscosity1.0 ~ 30.0S·mPa
Particle size10.0nm
Particle size21.3 ~ 716.0nm

Description & Claims & Application Information

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