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Ultrasound-assisted method and device for extracting nano-particles from nano-powder organic solvent suspension liquid

A nano-powder and suspension technology, which is applied in the fields of medical materials and industrial state detection, can solve problems such as difficult extraction, high viscosity and molecular entanglement, and achieve improved separation efficiency, accelerated degradation, and extraction and separation speed Improved effect

Active Publication Date: 2014-11-05
JIANGSU CALF CARBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional extraction methods of nanopowders have some shortcomings. In practical applications, due to the large surface energy of nanopowder particles, their extraction has always been a relatively difficult thing.
However, nanopowders dispersed in organic solvents are more difficult to extract due to the high viscosity and molecular entanglement of organic solvents.

Method used

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  • Ultrasound-assisted method and device for extracting nano-particles from nano-powder organic solvent suspension liquid
  • Ultrasound-assisted method and device for extracting nano-particles from nano-powder organic solvent suspension liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Nano powder extraction and separation device

[0027] Such as figure 1 As shown, the extraction device of the present embodiment includes:

[0028] An ultrasonic system, which includes an ultrasonic power supply and an ultrasonic horn 3;

[0029] A filtration system comprising a filter cup 4 and a filter membrane 5, wherein the filter membrane 5 is fixed at the lower end of the filter cup 4, and the ultrasonic horn 3 is inserted into the filter cup 4;

[0030] Collecting system, it comprises collecting bottle 8, and is connected below the filtering system;

[0031] Vacuum filtration system, which comprises a vacuum pump 7 and a suction filter tube 6, wherein one end of the suction filter tube 6 is connected with the vacuum pump 7, and the other end of the suction filter tube 6 is connected with the collection bottle 8; and

[0032] The supporting part includes a clamp 1 , a bracket 2 and a base 9 , wherein the ultrasonic horn 3 and the filter cup 4 are fi...

Embodiment 2

[0033] Example 2 Extraction of Nano Ultra High Molecular Weight Polyethylene Debris from Suspension

[0034] Preparation of microparticle suspension: Ultra-high relative molecular weight polyethylene (UHMWPE) wear debris is selected, which is basically irregular spherical particles with a particle size range of 0.2-0.8 μm. The liquid medium is calf serum deionized water with a volume fraction of 25%. diluent, select ethanol as surfactant to reduce surface tension. A mixture of water and ethanol (the volume ratio of water and ethanol is 3:5) is added to the diluent as a dispersant to prepare a UHMWPE-bovine serum suspension. In the suspension, the mass concentration of UHMWPE is 0.5%. , the volume concentration of calf serum is 2.5%, the volume concentration of ethanol is 56.2%, and the balance is water.

[0035] Ultrasonic-assisted filtration: put 200ml of UHMWPE-bovine serum suspension into the filter cup (4), put the ultrasonic horn (3) into the suspension, turn on the ul...

Embodiment 3

[0038] Embodiment 3 extracts nano-copper powder particle from suspension

[0039] The UHMWPE in embodiment 2 is replaced with copper abrasive dust, and test method is the same as embodiment 2, and concrete result is as follows

[0040]

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Abstract

The invention discloses an ultrasound-assisted method and an ultrasound-assisted device used for extracting nano-particles from nano-powder organic solvent suspension liquid. Based on the special effects of ultrasound in the process for extracting nano-particles from the nano-powder organic solvent suspension liquid, nano-particle extraction and separation effects can be improved. The special effects of ultrasound include a thermochemical effect, a cavitation effect, a mechanical stirring effect and an ultrasonic standing wave effect.

Description

technical field [0001] The invention relates to a method for ultrasonically assisted extraction and separation of nano-powders in organic solvents, which is suitable for the preparation and extraction of nano-powder raw materials, the separation and analysis of nano-wear debris in lubricating oil, the extraction of nano-medicine materials during the Westernization of traditional Chinese medicine, artificial The extraction and separation of joint nano-wear debris belongs to the fields of industrial state detection and medical materials. Background technique [0002] In the field of nano-powder research, people often need to collect nano-powder raw materials, nano-medicine materials, and nano-wear debris, and further analyze the collected nano-powder particles in terms of their existence, particle size distribution, and agglomeration. To study its performance. However, the traditional extraction methods of nano-powders have some deficiencies. In practical applications, due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/16G01N1/28
Inventor 杨柳刘洪涛
Owner JIANGSU CALF CARBON TECH CO LTD
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