Preparation method for modified nanometer zinc oxide

A nano-zinc oxide and modification technology, which is applied in the field of preparation of modified nano-zinc oxide, can solve the problems of easy agglomeration, difficult dispersion and poor polymer binding performance of nano-zinc oxide, and achieves easy process, good dispersibility and reduced The effect of agglomeration

Inactive Publication Date: 2019-04-02
YUNCHENG UNIVERISTY
7 Cites 5 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] However, nano-zinc oxide with high specific surface energy is easy to agglomerate, difficult to dispers...
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Abstract

The invention discloses a preparation method for modified nanometer zinc oxide. The preparation method comprises the following steps: immersing nanometer zinc oxide into a hydrochloric acid solution,then filtering nanometer zinc oxide out of the hydrochloric acid solution, adding water, then adding a barium stearate dispersant so as to obtain a nanometer zinc oxide dispersion, adding the nanometer zinc oxide dispersion into an ultrasonic generator, adding a soaking modifying solution, carrying out ultrasonic treatment under heating so as to obtain a modified nanometer zinc oxide solution, filtering the modified nanometer zinc oxide solution, placing filtered modified nanometer zinc oxide into a drying oven for drying, placing dried modified nanometer zinc oxide into a muffle furnace for calcination, and after calcination is completed, taking calcined modified nanometer zinc oxide out of the muffle furnace so as to obtain a finished product, namely, the modified nanometer zinc oxide. The preparation method for the modified nanometer zinc oxide provided by the invention has the following advantages: when the nanometer zinc oxide dispersion is modified by soaking, nanometer zinc oxide particles are located in a good dispersion state in a liquid by utilizing ultrasonic wave through ultrasonic operation, so the phenomenon of agglomeration among the nanometer zinc oxide particles can be reduced; the process is easy to operate; and the modified nanometer zinc oxide prepared by using the preparation method provided by the invention has good dispersity and facilitates realizing industrial production.

Application Domain

Material nanotechnologyZinc oxides/hydroxides

Technology Topic

Muffle furnaceChemistry +7

Examples

  • Experimental program(3)

Example Embodiment

[0021] Example 1
[0022] A preparation method of modified nano zinc oxide includes the following steps:
[0023] S1: Immerse nano zinc oxide in a hydrochloric acid solution, the mass fraction of the hydrochloric acid solution is 0.8%, continue to stir for 30 minutes, the stirring speed is 300r/min, and then filter out the nano zinc oxide for use;
[0024] S2: Add water to the filtered nano zinc oxide in step S1, and then slowly add barium stearate dispersant, the mass ratio of barium stearate dispersant to nano zinc oxide is 1:150, heat to 40°C and continue stirring for 10 minutes , The stirring speed is 300r/min to obtain a nano-zinc oxide dispersion with a mass concentration of 15%;
[0025] S3: Add the nano zinc oxide dispersion obtained in step S2 to the ultrasonic generator, then add the soaking modification solution, heat up to 50°C for ultrasonic treatment, the ultrasonic frequency is 60KHz, ultrasonic treatment 40min, to obtain the modified nano zinc oxide liquid ;
[0026] The soaking modification solution includes the following components in terms of weight percentage: 0.2% sodium dichromate, 0.6% sodium polyacrylate, 25% isopropanol, 10% stearic acid, and the balance is deionized water.
[0027] S4: Filter the modified nano zinc oxide liquid obtained in step S3, and then put it into a drying box for drying, the drying temperature is 75° C., and the drying time is 40 min;
[0028] S5: Put the dried modified nano zinc oxide into a muffle furnace for roasting, raise the temperature to 400° C. within 30 minutes, and keep the temperature for roasting for 3 hours. After roasting, the finished modified nano zinc oxide is obtained.

Example Embodiment

[0029] Example 2
[0030] A preparation method of modified nano zinc oxide includes the following steps:
[0031] S1: Immerse the nano zinc oxide in the hydrochloric acid solution, the mass fraction of the hydrochloric acid solution is 1.2%, continue to stir for 35 minutes, the stirring speed is 350r/min, and then filter the nano zinc oxide for use;
[0032] S2: Add water to the filtered nano zinc oxide in step S1, then slowly add barium stearate dispersant, the mass ratio of barium stearate dispersant to nano zinc oxide is 1:170, heat to 45°C and continue to stir for 13 minutes , The stirring speed is 400r/min, to obtain a nano zinc oxide dispersion with a mass concentration of 15-25%;
[0033] S3: Add the nano zinc oxide dispersion obtained in step S2 to the ultrasonic generator, then add the soaking modification solution, and heat up to 55°C for ultrasonic treatment, the ultrasonic frequency is 65KHz, and the ultrasonic treatment is 45min to obtain the modified nano zinc oxide solution ;
[0034] The immersion modification solution includes the following components in terms of weight percentage: 0.3% sodium dichromate, 0.7% sodium polyacrylate, 30% isopropanol, 12% stearic acid, and the balance is deionized water.
[0035] S4: Filter the modified nano zinc oxide liquid obtained in step S3, and then put it into a drying box for drying, the drying temperature is 80°C, and the drying time is 50 minutes;
[0036] S5: Put the dried modified nano zinc oxide into a muffle furnace for roasting, increase the temperature to 450° C. within 30 minutes, and keep the temperature for 4 hours to obtain the finished modified nano zinc oxide after roasting.

Example Embodiment

[0037] Example 3
[0038] A preparation method of modified nano zinc oxide includes the following steps:
[0039] S1: Immerse the nano-zinc oxide in the hydrochloric acid solution, the mass fraction of the hydrochloric acid solution is 1.4%, continue to stir for 40 minutes, the stirring speed is 400r/min, and then filter out the nano-zinc oxide for use;
[0040] S2: Add water to the nano-zinc oxide filtered in step S1, and then slowly add barium stearate dispersant. The mass ratio of barium stearate dispersant to nano-zinc oxide is 1:180. Heat to 50°C and continue to stir for 15 minutes , The stirring speed is 450r/min, to obtain a nano-zinc oxide dispersion with a mass concentration of 25%;
[0041] S3: Add the nano-zinc oxide dispersion obtained in step S2 to the ultrasonic generator, then add the soaking modification solution, heat up to 60℃ for ultrasonic treatment, the ultrasonic frequency is 70KHz, ultrasonic treatment is 50min, to obtain the modified nano-zinc oxide liquid ;
[0042] The immersion modification solution includes the following components in terms of weight percentage: 0.4% sodium dichromate, 0.8% sodium polyacrylate, 35% isopropanol, 14% stearic acid, and the balance is deionized water.
[0043] S4: Filter the modified nano zinc oxide liquid obtained in step S3, and then put it into a drying box for drying, the drying temperature is 85°C, and the drying time is 60 minutes;
[0044] S5: Put the dried modified nano zinc oxide into a muffle furnace for roasting, increase the temperature to 500° C. within 30 minutes, and keep the temperature for 4 hours to obtain the finished modified nano zinc oxide after roasting.
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Description & Claims & Application Information

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