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Mass preparation process of nano-grade zinc oxide, and application of nano-grade zinc oxide

A nano-zinc oxide and process technology, which is applied in the field of nano-materials, can solve the problems of uneven particle size distribution of nano-zinc oxide, many times of precursor washing, cumbersome process, etc. simple effect

Active Publication Date: 2016-01-13
河南索顿新材料有限公司
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Problems solved by technology

[0022] Although the preparation of nano-zinc oxide by direct precipitation method has many advantages, the method also has the following problems to be solved, for example, the particle size distribution of the prepared nano-zinc oxide particles is relatively wide, and the particle size is relatively large. The number of washings of the precursor is many, the process is cumbersome, and the dispersion is poor. In addition, when using this method to prepare a large amount of nano-zinc oxide, the particle size distribution of the obtained nano-zinc oxide is uneven and the particle size is large.

Method used

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  • Mass preparation process of nano-grade zinc oxide, and application of nano-grade zinc oxide
  • Mass preparation process of nano-grade zinc oxide, and application of nano-grade zinc oxide
  • Mass preparation process of nano-grade zinc oxide, and application of nano-grade zinc oxide

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preparation example Construction

[0086] The average particle diameter of the nano-zinc oxide obtained by the preparation method provided by the invention is 20-60 nanometers, even 25-45 nanometers, and the particle size distribution of the obtained nano-zinc oxide particles is uniform.

[0087] In general, according to the present invention, due to the addition of anionic surfactants, it is not only beneficial to disperse the precursors generated when the aqueous solution A and the mixed aqueous solution B are stirred and reacted, and, more importantly, make the finally obtained nano-zinc oxide particles The diameter is small, and at the same time, the particle size distribution of the nano-zinc oxide particles is uniform.

[0088] According to the present invention, after the precursor is washed with water, it is then washed with ethanol, especially with absolute ethanol, so that the precursor is evenly dispersed in ethanol, which is beneficial to reduce the lattice defects of the precursor and obtain a more ...

Embodiment 1

[0135] Preparation of nano zinc oxide

[0136] 1) 9g of ammonium bicarbonate was added to 62g of distilled water to make aqueous solution A, 10g of zinc acetate and 0.06g of sodium dodecylbenzenesulfonate were added to 60g of distilled water to be mixed with aqueous solution B,

[0137] Then add the aqueous solution A to the aqueous solution B, and stir and react for 1 hour at a temperature of 25° C. and a stirring speed of 4000 r / min to generate a precursor, that is, basic zinc carbonate;

[0138] 2) The obtained precursor was repeatedly washed twice with distilled water, and then washed once with absolute ethanol;

[0139] 3) Put the washed precursor into a drying oven and dry it at 80°C for 12 hours;

[0140] 4) Put the dried precursor into a muffle furnace and calcinate at 350° C. for 3 hours to obtain nano zinc oxide.

[0141] The obtained nanometer zinc oxide is measured by a laser particle size analyzer, and its average particle diameter is 28 nanometers.

[0142] ...

Embodiment 2

[0152] Preparation of nano zinc oxide

[0153] 1) 18g of ammonium bicarbonate was added into 125g of distilled water to form aqueous solution A, 20g of zinc acetate and 0.13g of sodium dodecylbenzenesulfonate were added to 120g of distilled water to form mixed aqueous solution B,

[0154] Then add the aqueous solution A to the aqueous solution B, and stir and react for 1 hour at a temperature of 30° C. and a stirring speed of 2000 r / min to generate a precursor, that is, basic zinc carbonate;

[0155] 2) The obtained precursor was repeatedly washed twice with distilled water, and then washed once with absolute ethanol;

[0156] 3) Put the washed precursor into a drying oven and dry it at 80°C for 12 hours;

[0157] 4) Put the dried precursor into a muffle furnace and calcinate at 350° C. for 4 hours to obtain nano zinc oxide.

[0158]The obtained nanometer zinc oxide is measured by a laser particle size analyzer, and its average particle diameter is 37.3 nanometers.

[015...

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Abstract

The invention discloses a mass preparation process of nano-grade zinc oxide. According to the process, a water solution prepared with carbonate or / and bicarbonate is added into a mixed water solution prepared from soluble zinc salt and an anionic surfactant; the mixture is subjected to a stirring reaction, such that a precursor is obtained; and the precursor is subjected to washing, drying and heat treatment steps, such that nano-grade zinc oxide is obtained. The obtained nano-grade zinc oxide can be applied in water-based acrylic resin as a filling material. The obtained water-based acrylic resin has high gloss, good water resistance and good durability.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a process for preparing a large amount of nanometer zinc oxide. The prepared nanometer zinc oxide can be applied in water-based acrylic resin. Background technique [0002] Nanomaterials are materials in which at least one dimension in the three-dimensional space is in the nanoscale range (1-100nm) or composed of them as basic units. [0003] Because nanomaterials have effects such as surface effects, volume effects, quantum size effects, dielectric confinement effects, and macroscopic quantum tunneling, nanomaterials have special properties that ordinary materials do not have. [0004] As a new type of material, nanomaterials play an important role in many fields such as catalysis, light filtering, light absorption, and medicine. Because of the broad application prospects of nanomaterials, nanomaterials are considered to be one of the most promising research mater...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y30/00C09D7/12C09D133/00
Inventor 陶栋梁
Owner 河南索顿新材料有限公司
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