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A kind of dispersing agent, its preparation method and its application in nano-alumina dispersion

A nano-alumina and dispersant technology, applied in chemical instruments and methods, dyeing polymer organic compound treatment, chemical/physical processes, etc., can solve the problem of high energy consumption, difficulty in reaching nanometer particle size, and nano-alumina Solve problems such as complex dispersion process, and achieve the effect of simple preparation process, short process time consumption and simple operation

Active Publication Date: 2017-11-24
江苏吉邦材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of complex nano-alumina dispersion process in the prior art, more energy consumption and time-consuming, and the particle size after dispersion is difficult to reach the nanometer level, etc.

Method used

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  • A kind of dispersing agent, its preparation method and its application in nano-alumina dispersion
  • A kind of dispersing agent, its preparation method and its application in nano-alumina dispersion
  • A kind of dispersing agent, its preparation method and its application in nano-alumina dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Configure the aqueous solution of polymer A, weigh 0.22g of P(APTAC-AAS-APEG) and dissolve it in 1000ml of ultrapure water, and prepare P(APTAC-AAS-APEG) with a unit charge concentration of APTAC unit of 0.1mmol / L. APEG) aqueous solution; the number average molecular weight of P(APTAC-AAS-APEG) is 102321, wherein x=45; x:y=1:1; y:z=1:1, PDI=1.74, wherein n is 45.

[0050] 2. Configure the aqueous solution of polymetallic oxygen cluster compound B, and weigh 0.6g of H 3 [PMo 12 o 40 ] solid powder, be dissolved in 1000ml of ultrapure water, adjust the pH of this solution by the NaOH aqueous solution of 1mg / mL, the pH of this solution is adjusted to 6.5~7.5, can obtain the PMo that unit charge concentration is 1mmol / L 12 aqueous solution.

[0051] 3. Under the condition of magnetic stirring, gradually drop the polymetallic oxygen cluster compound B solution obtained in step (2) into the polymer P(APTAC-AAS-APEG) solution at a volume ratio of 1:1, and after mixing ev...

Embodiment 2

[0053] 1. Configure the aqueous solution of polymer A, weigh 1.0g of P(MAPTAC-AAP-HPEG) and dissolve it in 1000ml of ultrapure water, and prepare P(MAPTAC-AAP-HPEG) with a unit charge concentration of MAPTAC unit of 0.3mmol / L. HPEG) aqueous solution; the number average molecular weight of P(MAPTAC-AAP-HPEG) is 184452, wherein x=55; x:y=1:1.1; y:z=1:1.2, PDI=1.69, wherein n is 64.

[0054] 2. Configure the aqueous solution of polymetallic oxygen cluster compound B, and weigh 1.8g of H 3 [PMo 12 o 40 ] Solid powder, be dissolved in the ultrapure water of 1000ml, adjust the pH of this solution by the NaOH aqueous solution of 1mg / mL, the pH of this solution is adjusted to 6.5~7.5, available unit charge concentration is the PMo of 3mmol / L 12 aqueous solution.

[0055] 3. Under the condition of magnetic stirring, gradually drop the polymetallic oxygen cluster compound B solution obtained in step (2) into the polymer P(MAPTAC-AAP-HPEG) solution at a volume ratio of 1:1, and after ...

Embodiment 3

[0057] 1. Configure the aqueous solution of polymer A, weigh 2.97g of P(APTAC-MAAA-APEG) and dissolve it in 1000ml of ultrapure water, and prepare P(APTAC-MAAA-APEG) with an APTAC unit unit charge concentration of 0.6mmol / L. APEG) aqueous solution; the number average molecular weight of P(APTAC-MAAA-APEG) is 247566, wherein x=50; x:y=1:1; y:z=1:1.3, PDI=1.76, wherein n is 82.

[0058] 2. Configure the aqueous solution of polymetallic oxygen cluster compound B, and weigh 2.7g of H 4 [SiMo 12 o 40 ] Solid powder, dissolved in 1000ml of ultrapure water, the pH of the solution was adjusted by 1mg / mL NaOH aqueous solution, and the pH of the solution was adjusted to 6.5-7.5, and SiMo with a unit charge concentration of 6mmol / L could be obtained. 12 aqueous solution.

[0059] 3. Under the condition of magnetic stirring, gradually drop the polymetallic oxygen cluster compound B solution obtained in step (2) into the polymer P(APTAC-MAAA-APEG) solution at a volume ratio of 1:1, and ...

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Abstract

The invention provides a dispersant, its preparation method and its application in the dispersion of nano-alumina. The dispersant is mixed with an amphoteric polymer aqueous solution and a polymetallic oxygen cluster compound aqueous solution according to a volume ratio of 1:1. And the ratio of the unit charge concentration of the amphoteric polymer to the unit charge concentration of the polymetallic oxygen cluster compound is 1:10, magnetically stirred at room temperature for 12 to 24 hours, and dialyzed with a dialysis membrane with a molecular weight cut-off of 3000 to 3800 Daltons for 24 to 48 hours , the organic-inorganic hybrid material obtained after being freeze-dried on a freeze dryer under the conditions of a vacuum of 1Pa and a temperature of -65°C to -55°C. The dispersant can be ionized in water, with a certain negative charge, adsorbed on the surface of nano-alumina, while the other part of the dispersant can be fully extended in the water medium, and prevent the surrounding nano-alumina particles through the steric hindrance effect The proximity of nano-alumina has been achieved, and the effect of stable dispersion of nano-alumina has been achieved, and the average particle size has reached below 90 nanometers.

Description

technical field [0001] The invention belongs to the field of new materials and dispersion technology, and in particular relates to a dispersant, its preparation method and its application in nano-alumina dispersion. Background technique [0002] Nanoparticles refer to ultrafine particles with a particle size of nanometers. Its size is larger than atomic clusters and smaller than ordinary micropowder. When its particle size enters nanometers, it has many distinctive properties and is used in many fields. Good application prospects. Nano-alumina has special properties such as surface effect, quantum size effect, volume effect, macroscopic quantum tunneling effect and volume effect due to its small particle size, high purity and uniform distribution, and its surface electronic structure and crystal structure undergo great changes. , has some more excellent characteristics and wide application prospects than conventional materials. At present, it has been widely used in tradit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/52C08F283/06C08F220/34C08F220/06C09C1/40C09C3/10C09K23/52
CPCC08F283/06C09C1/407C09C3/10C09K23/16C08F220/34C08F220/06
Inventor 张茜刘加平冉千平杨勇舒鑫赵红霞
Owner 江苏吉邦材料科技有限公司