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Method for detecting insoluble matter dispersiveness in solution

A dispersive and material technology, applied in the preparation of test samples, analysis of suspensions and porous materials, measuring devices, etc., to achieve the effect of wide range, easy operation and low quality

Inactive Publication Date: 2010-04-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light transmittance method is to use the nanoparticles in the dispersion system to absorb the incident light of a certain wavelength, and the negative logarithm of the light transmittance of the dispersion system is inversely proportional to the content of the nanoparticles; for different dispersion systems, under the same conditions, the transmittance The dispersion stability of the system with a small light rate is better; but this method is an evaluation method proposed according to the Lambert-Beer law, which is only suitable for dilute solutions and has certain limitations
It can be seen that the current four methods for measuring the dispersion of particles in solution have limitations

Method used

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  • Method for detecting insoluble matter dispersiveness in solution
  • Method for detecting insoluble matter dispersiveness in solution
  • Method for detecting insoluble matter dispersiveness in solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 2 grams of D 50 Zirconium boride particles of 12 microns are dissolved in deionized water and stirred vigorously for 10 minutes to form a uniform suspension. The volume of the suspension is V 1 It is 400 milliliters (note: the volume of deionized water can be selected 400 milliliters during actual operation, and zirconium boride is dissolved in 400 milliliters of deionized waters, and its volume does not change greatly, and the volume V of suspension 1 approximately 400 ml, negligible for the volume added by the zirconium boride particles), and the resulting suspension was allowed to stand for 15 minutes. Take a beaker that has been dried, claim its mass 90.5502 grams, pour 50% of the upper layer suspension (200 ml) of the suspension after standing in this beaker, dry it at 100 ° C, take it out and cool it, and claim its mass as 90.6033 gram, the data are substituted into the formula to calculate the ratio ΔC of the two concentrations to be 0.05, which shows that...

Embodiment 2

[0026] Weigh 0.5 g D 50 Zirconium boride particles of 12 microns are dissolved in deionized water and dispersed for 10 minutes to form a uniform suspension. The volume of the suspension is V 1 to 100 ml, the resulting suspension was allowed to stand for 15 minutes. Take a beaker that has been dried, claim its mass 52.9914 grams, pour 50% of the upper layer suspension (50 ml) of the suspension after standing in this beaker, dry it at 100 ° C, take it out and cool it, and claim its mass as 53.0316 gram, the data are substituted into the formula to calculate the ratio ΔC of the two concentrations to be 0.15, showing that its dispersibility is relatively poor, but the dispersibility obtained in Example 1 is improved.

Embodiment 3

[0028] Weigh 0.5 g D 50 For 12 micron zirconium boride particles, dissolve in deionized water, add suspension volume V 1 2% dispersing agent (alcohol, volume is 2 milliliters), supernatant disperses and makes it form uniform suspension in 10 minutes, the volume V of suspension 1 to 100 ml, the resulting suspension was allowed to stand for 15 minutes. Take a beaker that has been dried, claim its mass 53.0034 grams, pour 50% of the upper suspension (50 ml) of the suspension after standing in this beaker, dry it at 100 ° C, take it out and cool it, and claim its mass as 53.1061 gram, the ratio ΔC of the two concentrations obtained by substituting the data into the formula to calculate is 0.38, which shows that the dispersibility obtained in its dispersion ratio embodiment 1 and embodiment 2 is improved to some extent.

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Abstract

The present invention is method of determining the dispersivity of insoluble matter in solution. The method includes the following steps: setting insoluble matter of weight M1 in solvent to form suspension of volume V1; stirring or ultrasonic dispersing; stilling to form gradient suspension; weighing beaker weight M2; taking the upper suspension of volume V2 to the beaker; stoving, cooling and weighing to obtain M3; calculating average concentration of suspension and the ratio of the concentrations before and after stilling; and repeating the foregoing steps to obtain one average concentrationratio. The method is simple, short in measuring period, low in cost, wide in measured matter range and small in required measured matter amount.

Description

technical field [0001] The invention relates to a method for measuring the dispersibility of insoluble substances in solutions. Background technique [0002] With the development of new material preparation technology towards microscopic refinement, the problem of powder agglomeration and dispersion has become a bottleneck in the preparation and development of new materials and ultrafine powder, and the modification technology of powder is becoming more and more important. Through surface modification, the dispersibility and durability of powder particles can be improved, the surface activity can be increased, the particles can have new physical, chemical and mechanical properties, etc., and the added value of powder can be increased. Ultrafine particle dispersion technology is widely used in ceramic materials, electronic materials, biological materials, pharmaceutical industry, coatings, paints, powder metallurgy and military fields. [0003] At present, there are four met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/00G01N15/06G01N5/00G01N1/38
Inventor 张联盟宋杰光李俊国宋建荣沈强
Owner WUHAN UNIV OF TECH