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A kind of preparation technology of high-quality nano zinc oxide

A nano-zinc oxide and preparation technology, which is applied in the field of nano-zinc oxide processing and preparation, can solve the problems of ineffective preparation of large quantities of nanoparticles, high toxicity of dimethylaminosulfonyl chloride components, and hidden dangers to the health and safety of operators. Improve the effect of growth inhibition, increase the difficulty of deposition and bonding, and improve the effect of surface properties

Active Publication Date: 2019-04-02
ANHUI JINHUA ZINC OXIDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application number is: 201610531155.7 discloses a preparation method of highly active nano-zinc oxide, which uses hydroxypropyl methacrylate, diethyl hydroxymethyl phosphonate, sodium diethylenetriaminepentamethylene phosphonate to limit the oxidation Zinc nucleation size and growth direction, using dimethylaminosulfonyl chloride as a stabilizer, etc., the particle size of the final nano-zinc oxide is 10~18nm, the particle size parameters and performance have been greatly improved, but can It can be seen that it still cannot effectively prepare a large number of nanoparticles below 10nm, which also limits its application in higher-quality fields, and the dimethylaminosulfonyl chloride component used in it is highly toxic (the danger sign is T+), There is a great safety hazard to the health of the operator, and at the same time, it adds and utilizes more chemical components, and the waste liquid generated is more difficult to purify, and the treatment cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation process for high-quality nano-zinc oxide, comprising the steps of:

[0023] (1) Weigh 1 part of zinc sulfate and 150 parts of deionized water in parts by weight, mix them together and put them into the mixing tank, stir at high speed until the solution is complete, and then get the mixed solution A for later use;

[0024] (2) Add 0.5 parts of potassium carbonate to the mixed solution A prepared in step (1), continue to stir and react for 1 hour, and then centrifuge to obtain a white precipitate Zn 5 (CO 3 ) 2 (OH) 6 spare;

[0025] (3) Put the white precipitate obtained in step (2) into the reactor, then add 6 parts of rare earth stabilizer, 6 parts of silane coupling agent, and 4 parts of methyl acrylate into the reactor, and use 600 rpm After stirring at a uniform speed, the mixture B is obtained for later use;

[0026] (4) Vacuumize the reaction kettle in step (3), then heat to keep the temperature in the reaction kettle at 140°C, and keep it warm ...

Embodiment 2

[0035] A preparation process for high-quality nano-zinc oxide, comprising the steps of:

[0036] (1) Weigh 1.2 parts of zinc sulfate and 160 parts of deionized water in parts by weight, mix them together and put them into the mixing tank, stir at high speed until the solution is complete to obtain the mixed solution A for later use;

[0037] (2) Add 0.8 parts of potassium carbonate to the mixed solution A prepared in step (1), continue to stir and react for 1.3 hours, and then centrifuge to obtain a white precipitate Zn 5 (CO 3 ) 2 (OH) 6 spare;

[0038] (3) Put the white precipitate obtained in step (2) into the reactor, and then add 8 parts of rare earth stabilizer, 7 parts of silane coupling agent, and 6 parts of methyl acrylate to the reactor, and use 650 rpm After stirring at a uniform speed, the mixture B is obtained for later use;

[0039] (4) Vacuumize the reaction kettle in step (3), then heat to keep the temperature in the reaction kettle at 145°C, and keep it w...

Embodiment 3

[0048] A preparation process for high-quality nano-zinc oxide, comprising the steps of:

[0049] (1) Weigh 1.5 parts of zinc sulfate and 170 parts of deionized water by weight, mix them together and put them into the mixing tank, stir at high speed until the solution is complete to obtain the mixed solution A for later use;

[0050] (2) Add 1 part of potassium carbonate to the mixed solution A prepared in step (1), continue to stir and react for 1.5 hours, and then centrifuge to obtain a white precipitate Zn 5 (CO 3 ) 2 (OH) 6 spare;

[0051] (3) Put the white precipitate obtained in step (2) into the reactor, then add 9 parts of rare earth stabilizer, 8 parts of silane coupling agent, and 7 parts of methyl acrylate to the reactor, and use 700 rpm After stirring at a uniform speed, the mixture B is obtained for use;

[0052] (4) Vacuumize the reaction kettle in step (3), then heat to keep the temperature in the reaction kettle at 150°C, and keep it warm for 50 minutes;

...

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Abstract

The invention discloses a process for preparing high-quality nanometer zinc oxide. The process includes steps of jointly uniformly mixing zinc sulfate and deionized water with each other to obtain mixtures; adding potassium carbonate into the mixtures and carrying out reaction to obtain Zn5(CO3)2(OH)6; jointly mixing the Zn5(CO3)2(OH)6, rare earth stabilizers, silane coupling agents and methyl acrylate with one another to obtain mixtures and placing the mixtures in a reaction kettle; carrying out heating, pressurizing and ultrasonic irradiation treatment; adding absolute ethyl alcohol into obtained reactants; carrying out centrifuging and drying treatment to obtain a finished product which is the high-quality nanometer zinc oxide. The process for preparing the high-quality nanometer zinc oxide has the advantages that the process is specially improved, and accordingly the particle sizes of zinc oxide particles can be effectively reduced and are not larger than 10 nm; the surface activity of the zinc oxide particles can be improved, the filling performance and the usability of the high-quality nanometer zinc oxide can be enhanced, and the high-quality nanometer zinc oxide is high in comprehensive quality; the process is high in safety and market competitiveness and low in environmental hazard extent.

Description

technical field [0001] The invention belongs to the field of processing and preparation of nano-zinc oxide, and in particular relates to a preparation process of high-quality nano-zinc oxide. Background technique [0002] Nano-zinc oxide is a multifunctional new inorganic material, and its particle size is about 1-100 nanometers. Due to the miniaturization of crystal grains, the surface electronic structure and crystal structure change, resulting in surface effects, volume effects, quantum size effects and macroscopic tunnel effects that macroscopic objects do not have, as well as high transparency and high dispersion. In recent years, it has been found that it exhibits many special functions in catalysis, optics, magnetism, mechanics, etc., making it have important application value in many fields such as ceramics, chemical industry, electronics, optics, biology, medicine, etc. Specificity and use of comparisons. Nano-zinc oxide can be used in the fields of textiles and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y30/00
CPCB82Y30/00C01G9/02C01P2004/64C01P2006/12
Inventor 张训龙
Owner ANHUI JINHUA ZINC OXIDE CO LTD
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