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
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[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] T...
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[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 solu...
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[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 ;
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