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Dispersing method for ultrafine powder

An ultra-fine powder, dispersion technology, applied in the field of detection, can solve the problems of difficult dispersion, easy to produce agglomeration, easy to agglomerate powder, etc., to achieve the effect of improving accuracy, easy dispersion, and easy observation

Inactive Publication Date: 2016-06-15
深圳市美信检测技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large specific surface area and high chemical activity of ultra-fine powder particles, it is easy to agglomerate. Therefore, when using the existing test method for testing, the powder is easy to agglomerate and difficult to disperse, and it is difficult to directly test the powder particles. the size of

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  • Dispersing method for ultrafine powder

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Embodiment 1 adopts the method of the present invention, and the weight ratio of its mixture and ethanol solvent is selected as 1:8, and concrete steps are as follows:

[0062] 1. Chemical modification of ultrafine powder:

[0063] (1) Prepare the modified solution: add 50g of the mixture of methyl silicone oil and stearic acid with a weight ratio of 1:10 to 400g (about 500ml) of ethanol solvent, and stir at a constant speed for 10 minutes to prepare the modified solution; In other words, the weight ratio of the mixture described in Example 1 to the ethanol solvent is 1:8, and the mass concentration of the mixture is around 0.1 g / ml;

[0064] (2) Weigh 50g of the modified solution in step (1), add 10g of ultrafine powder with a particle size of <3um, mix it in a high-speed mixer (1000rpm) for 15 minutes, then place it in a constant temperature box, and control the temperature At 90°C±1°C for 30 minutes, the chemically modified ultrafine powder is produced. In other wo...

Embodiment 2

[0071] Embodiment 2 adopts the method of the present invention, and the weight ratio of its mixture and ethanol solvent is 1:4, and concrete steps are as follows:

[0072] 1. Chemical modification of ultrafine powder:

[0073] (1) Prepare the modified solution: Add 100g of the mixture of methyl silicone oil and stearic acid with a weight ratio of 1:10 to 400g of ethanol solvent, and stir at a constant speed for 10 minutes to prepare the modified solution; in other words, The weight ratio of mixture and ethanol solvent described in embodiment 2 is 1:4, and the mass concentration of described mixture is about 0.2g / ml;

[0074] (2) Weigh 50g of the modified solution in step (1), add 10g of ultrafine powder with a particle size of <3um, mix it in a high-speed mixer (1000rpm) for 15 minutes, then place it in a constant temperature box, and control the temperature At 90°C±1°C for 30 minutes, the chemically modified ultrafine powder is produced. In other words, the weight ratio of ...

Embodiment 3

[0081] Embodiment 3 adopts the method of the present invention, and the weight ratio of its mixture and ethanol solvent is selected as 1:2, and its concrete steps are as follows:

[0082] 1. Chemical modification of ultrafine powder:

[0083] (1) Configuration of the modified solution: add 200g of a mixture of methyl silicone oil and stearic acid with a weight ratio of 1:10 to 400g of ethanol solvent, and stir at a constant speed for 10 minutes to prepare the modified solution; in other words , the mass concentration of the mixture described in embodiment 3 is 0.4g / ml;

[0084] (2) Weigh 50g of the modified solution in step (1), add 10g of ultrafine powder with a particle size of <3um, mix it in a high-speed mixer (1000rpm) for 15 minutes, then place it in a constant temperature box, and control the temperature At 90°C±1°C for 30 minutes, the chemically modified ultrafine powder is produced. In other words, the weight ratio of the ultrafine powder to the modified solution is...

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Abstract

The invention discloses a dispersing method for ultrafine powder. The dispersing method includes the steps of adding a mixture of methyl silicone oil and stearic acid to an ethanol solvent, and stirring the mixture to prepare a modifying solution, wherein the weight ratio of the mixture to the ethanol solvent is 1:8-1:2, and adding the ultrafine powder to the modifying solution, and stirring and mixing the mixture. Through chemical modification, the ultrafine powder is easy to disperse. The method effectively solves the problem of agglomeration of the ultrafine powder and the test result actually reflects the particle size of the ultrafine powder.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for dispersing ultrafine powder. Background technique [0002] Ultrafine powder industry is an emerging industry developed along with modern high-tech and new material industries. Since the 1970s, the global market demand for ultrafine powder has grown at an average rate of 10%, following the IT and information industry. One of the fastest growing industries after that. With its unique physical and chemical properties, ultrafine powder is widely used in new materials, medicine, daily chemical, health care, chemical industry, military industry, electronics, aerospace and other industries and fields. [0003] Due to the large specific surface area and high chemical activity of ultra-fine powder particles, it is easy to agglomerate. Therefore, when using the existing test method for testing, the powder is easy to agglomerate and difficult to disperse, and it is difficult to directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02G01N1/38
CPCG01N15/0205G01N1/38G01N15/00
Inventor 李军杨振英
Owner 深圳市美信检测技术股份有限公司