Method for testing particle size of nano zirconium dioxide

A technology of nano-zirconia and testing methods, which is applied in particle size analysis, preparation of test samples, measuring devices, etc., can solve the problems of secondary particle size increase, difficulty in powder particle size, poor regularity, etc., and achieve The effect of high accuracy, low usage, and simple operation

Pending Publication Date: 2022-05-13
GUANGDONG ORIENT ZIRCONIC IND SCI & TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] But for nano zirconia, due to the high surface energy of nano zirconia powder, it is easy to agglomerate, resulting in the increase of particle size and poor regularity. Therefore, conventional laser diffraction is used to detect the particle size of the powder. very difficult

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  • Method for testing particle size of nano zirconium dioxide
  • Method for testing particle size of nano zirconium dioxide

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Experimental program
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Effect test

Embodiment 1

[0025] In the present embodiment, the particle size testing method of nanometer zirconia comprises the following steps successively:

[0026] (1) Add 0.1g of nano-zirconia powder to 30g of dilute acetic acid solution (use a beaker to hold the dilute acetic acid solution; the weight of nano-zirconia powder is about 0.33% of the dilute acetic acid solution), and stir evenly (with glass rod to stir evenly) to obtain the first mixed solution;

[0027] In this step (1), the weight percent concentration of dilute acetic acid solution is 0.5%;

[0028] (2) Put the first mixed liquid into the ultrasonic disperser (put the beaker containing the first mixed liquid into the ultrasonic disperser), and ultrasonically disperse the nano-zirconia powder in the first mixed liquid to disperse completely;

[0029] In this step (2), the power of the ultrasonic disperser used is 240W, and the ultrasonic dispersion treatment time is 30min;

[0030] (3) Add an appropriate amount of sodium hexamet...

Embodiment 2

[0037] In the present embodiment, the particle size testing method of nanometer zirconia comprises the following steps successively:

[0038] (1) Add 0.12g of nano-zirconia powder to 30g of dilute acetic acid solution (use a beaker to hold the dilute acetic acid solution; the weight of nano-zirconia powder is 0.4% of the dilute acetic acid solution), and stir evenly (use a glass Stir evenly with the rod), to obtain the first mixed solution;

[0039] In this step (1), the weight percent concentration of dilute acetic acid solution is 0.5%;

[0040] (2) Put the first mixed liquid into the ultrasonic disperser (put the beaker containing the first mixed liquid into the ultrasonic disperser), and ultrasonically disperse the nano-zirconia powder in the first mixed liquid to disperse completely;

[0041] In this step (2), the power of the ultrasonic disperser used is 240W, and the ultrasonic dispersion treatment time is 40min;

[0042] (3) Add an appropriate amount of sodium hexam...

Embodiment 3

[0049] In the present embodiment, the particle size testing method of nanometer zirconia comprises the following steps successively:

[0050] (1) Add 0.15g of nano-zirconia powder to 30g of dilute acetic acid solution (use a beaker to hold the dilute acetic acid solution; the weight of nano-zirconia powder is about 0.5% of the dilute acetic acid solution), and stir evenly (with glass rod to stir evenly) to obtain the first mixed solution;

[0051] In this step (1), the weight percent concentration of dilute acetic acid solution is 0.5%;

[0052] (2) Put the first mixed liquid into the ultrasonic disperser (put the beaker containing the first mixed liquid into the ultrasonic disperser), and ultrasonically disperse the nano-zirconia powder in the first mixed liquid to disperse completely;

[0053] In this step (2), the power of the ultrasonic disperser used is 240W, and the ultrasonic dispersion treatment time is 50min;

[0054] (3) Add an appropriate amount of sodium hexamet...

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Abstract

The invention relates to a particle size testing method of nano zirconium dioxide, which sequentially comprises the following steps: (1) adding nano zirconium dioxide powder into a dilute acetic acid solution, and uniformly stirring to obtain a first mixed solution; (2) putting the first mixed solution into an ultrasonic disperser, and performing ultrasonic dispersion until the nano zirconium dioxide powder in the first mixed solution is completely dispersed; (3) adding a proper amount of sodium hexametaphosphate solution into the first mixed solution, and uniformly stirring to obtain a second mixed solution; (4) carrying out ultrasonic dispersion on the second mixed solution for 5-10 minutes by utilizing an ultrasonic disperser; and (5) opening the laser particle analyzer, sampling from the second mixed solution, and adding into the laser particle analyzer for testing. The method is simple in detection instrument and treatment equipment, low in investment, simple to operate, low in price of required reagents, low in usage amount and free of environmental pollution; and the detection result is high in accuracy and good in repeatability.

Description

technical field [0001] The invention relates to a particle size detection method of powder, in particular to a particle size detection method of nano zirconium dioxide. Background technique [0002] At present, the methods for detecting nano-zirconia powder can be divided into four types: centrifugal sedimentation method, particle image scanning method, electrical resistance method and laser diffraction scattering method. [0003] The centrifugal sedimentation method detects the particle size distribution of the powder by measuring the sedimentation velocity of the analyzed particles in the liquid, but the measurement speed is slow, the time is long, and the reproducibility is poor, and it is generally not suitable for the test of particles below 2 μm. [0004] The particle image scanning method can not only measure the particle size, but also analyze the general shape characteristics, which is intuitive and reliable; but the disadvantage is that the operation is cumbersome,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02G01N1/38
CPCG01N15/0205G01N1/38
Inventor 周悦芝林伟娜彭少涵杜冬莹赖冬敏
Owner GUANGDONG ORIENT ZIRCONIC IND SCI & TECH CO LTD
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