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Modification method of nanometer zinc oxide powder material

A nano-zinc oxide powder and nano-zinc oxide technology, applied in the field of nano-materials, can solve the problems of easy agglomeration of nano-zinc oxide, and achieve the effects of improving dispersion, reducing interaction, and reducing agglomeration

Inactive Publication Date: 2016-02-24
CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a modification method of nano-zinc oxide powder material to improve the dispersion and stability of nano-zinc oxide in view of the problem that nano-zinc oxide is easy to agglomerate in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Preparation of nano-zinc oxide dispersion

[0020] Add 3 g of melamine into 30 mL of acetic acid; then add 9 g of nano-zinc oxide and disperse at high speed to obtain a nano-zinc oxide dispersion;

[0021] 2) Preparation of nano zinc oxide powder

[0022] Evaporate the prepared nano-zinc oxide dispersion to dryness in a water bath at 80°C, put it into a muffle furnace for roasting, use argon as a protective gas, raise the temperature to 500°C at 5°C / min and keep for 2 hours to obtain surface modification nano zinc oxide.

Embodiment 2

[0024] 1) Preparation of nano-zinc oxide dispersion

[0025] Add 3 g of melamine into 30 mL of acetic acid; then add 6 g of nano-zinc oxide and disperse at high speed to obtain a nano-zinc oxide dispersion;

[0026] 2) Preparation of nano zinc oxide powder

[0027] Evaporate the prepared nano-zinc oxide dispersion to dryness in a water bath at 90°C, put it into a muffle furnace for roasting, use argon as a protective gas, raise the temperature to 520°C at 5°C / min and keep for 3 hours to obtain surface modification nano zinc oxide.

Embodiment 3

[0029] 1) Silicon deposition treatment of nano-zinc oxide

[0030] Dissolve 20g of methyl silicone oil with a mass fraction of 20% in 100mL of n-hexane solvent, add 10g of nano-zinc oxide for high-speed dispersion, and obtain a mixed solution; evaporate the prepared mixed solution to dryness in a water bath, and put it in an oven for drying. Prepare nano-zinc oxide for depositing methyl silicone oil; place the prepared nano-zinc oxide for depositing methyl silicone oil in a muffle furnace, and raise the temperature to 500-550 °C at a rate of 5 °C / min under oxygen-enriched conditions to maintain After 1-3 hours, the methyl silicone oil is converted into silicon dioxide, that is, the nano-zinc oxide treated with silicon deposition on the surface is obtained.

[0031] 2) Preparation of nano-zinc oxide dispersion

[0032] Add 3 g of melamine into 30 mL of acetic acid; then add 6 g of nano-zinc oxide and disperse at high speed to obtain a nano-zinc oxide dispersion;

[0033] 3) P...

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PUM

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Abstract

The invention belongs to the technical field of nano-materials, and concretely discloses a modification method of a nanometer zinc oxide powder material. The method comprises the following steps: 1, preparing a nanometer zinc oxide dispersion: dissolving melamine in acetic acid, adding nanometer zinc oxide, and carrying out high speed dispersion o prepare the nanometer zinc oxide dispersion; and 2, preparing nanometer zinc oxide powder: carrying out water bath evaporation on the nanometer zinc oxide dispersion prepared in step 1 until dryness, putting the obtained material in a muffle furnace, roasting, heating at a rate of 5DEG C / min to 500-550DEG C with argon as a protection gas, and keeping the temperature for 1-3h to prepare surface modified nanometer zinc oxide. The method has the following advantages: 1, a novel material carbon nitride is selected to carry out surface modifying treatment on the nanometer zinc oxide, so interaction in the nanometer zinc oxide is reduced, the dispersion of the nanometer zinc oxide in a non-polar solvent is improved, and agglomeration is reduced; and 2, silicon deposition modification of the surface of the nanometer zinc oxide is carried out, so dissolution of zinc ions is inhibited, and the dispersion of the nanometer zinc oxide is improved.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for modifying nanometer zinc oxide powder materials. Background technique [0002] Nano-zinc oxide is an inorganic ultraviolet shielding agent with excellent performance, which is widely used in sunscreen cosmetics, nano-functional textiles, functional plastics and coatings and other fields. However, nano-zinc oxide is an inorganic oxide with small size and high surface energy, and it is difficult to be compatible with organic components, so it is easy to cause serious agglomeration. In addition, due to the large specific surface area of ​​nano-zinc oxide, zinc ions are very easy to dissolve, and the existence of a large amount of zinc ions, if the system contains fatty acids and their salts, will react with zinc ions to form fatty acid zinc, making the use of nano-zinc oxide worse. . Therefore, it is necessary to modify the surface of nano zinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/04C09C3/06
CPCC09C1/043C01P2004/82C09C3/06
Inventor 张宇张励
Owner CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH