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Ultraviolet-resistant cerium oxide coated nano zinc oxide powder and composite paint comprising same

A nano-zinc oxide powder and composite coating technology, applied in the field of coatings, can solve the problems of accelerated degradation of organic coatings, degradation of coating weather resistance, application limitations, etc., and achieve the effects of improved dispersion, easy operation, and simple methods

Active Publication Date: 2016-01-27
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high-efficiency photocatalytic activity of the current nano-zinc oxide, the degradation of the organic coating is accelerated, resulting in a significant decrease in the weather resistance of the coating, which limits its application.

Method used

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  • Ultraviolet-resistant cerium oxide coated nano zinc oxide powder and composite paint comprising same
  • Ultraviolet-resistant cerium oxide coated nano zinc oxide powder and composite paint comprising same
  • Ultraviolet-resistant cerium oxide coated nano zinc oxide powder and composite paint comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (A) Get 0.2mol / L cerium nitrate solution, add 0.05g of anionic surfactant sodium lauryl sulfate and 20g of nanometer zinc oxide powder in every 100ml of cerium nitrate solution, and disperse and dissolve to obtain solution A.

[0048] (B) Take 0.3mol / L sodium bicarbonate solution with the same volume as solution A, slowly drop it into solution A, and react for 1 hour at a temperature of 50°C and a rotation speed of 1200r / min until the reaction is complete and white precipitation.

[0049] (C) The resulting white precipitate was centrifuged and washed 3 times with distilled water.

[0050] (D) Dry the separated white precipitate in a constant temperature drying oven at 50° C. for 12 hours.

[0051] (E) Sintering the dried white powder at 290° C. for 1 hour.

Embodiment 2

[0053] (A) Get 0.3mol / L cerium nitrate solution, add 0.15g of anionic surfactant sodium lauryl sulfate and 60g of nanometer zinc oxide powder in every 100ml of cerium nitrate solution, and disperse and dissolve to obtain solution A.

[0054] (B) Take 0.4mol / L sodium bicarbonate solution of the same volume as solution A, slowly drop it into solution A, and stir for 1 hour at a temperature of 50°C and a rotation speed of 1200r / min until the reaction is complete and a white precipitate is produced .

[0055] (C) The resulting precipitated mixture was centrifuged and washed 3 times with distilled water.

[0056] (D) Put the separated solid into a constant temperature drying oven at 50° C. for 12 hours.

[0057] (E) Sintering the dried white powder at 300° C. for 1 hour.

Embodiment 3

[0059] (A) Get 0.5mol / L cerium nitrate solution, add 0.3g of anionic surfactant sodium lauryl sulfate and 150g nanometer zinc oxide powder in every 100ml of cerium nitrate solution, and disperse and dissolve to obtain solution A.

[0060](B) Take 0.5 mol / L sodium bicarbonate solution of the same volume as solution A, slowly drop it into solution A, and stir for 1 hour at a temperature of 50°C and a rotation speed of 1200r / min until the reaction is complete and a white precipitate is produced .

[0061] (C) The resulting precipitated mixture was centrifuged and washed 3 times with distilled water.

[0062] (D) Put the separated solid into a constant temperature drying oven at 50° C. for 12 hours.

[0063] (E) Sintering the dried white powder at 300° C. for 1 hour.

[0064] The micro-morphology of nano zinc oxide powder coated with cerium oxide was observed by ESEM (ESEMXL30FEG) environmental scanning electron microscope.

[0065] From comparative example 1 ( figure 1 ) and ...

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Abstract

The invention discloses ultraviolet-resistant cerium oxide coated nano zinc oxide powder and composite paint comprising the ultraviolet-resistant cerium oxide coated nano zinc oxide powder. Because of high photocatalytic activity of existing nano zinc oxide, degradation of an organic coating will be accelerated, and the weather resistance of the coating is reduced. The ultraviolet-resistant cerium oxide coated nano zinc oxide powder is prepared through a chemical precipitation synthesis method, and the thickness of a cerium oxide coating in the nano zinc oxide powder is 5-10 nm. The ultraviolet-resistant cerium oxide coated nano zinc oxide powder is added in the paint, the photocatalytic activity of nano zinc oxide is reduced in the mode that the nano zinc oxide is coated with cerium oxide, and the ultraviolet resistance and the ageing resistance of the coating are improved.

Description

technical field [0001] The invention relates to paint technology, in particular to an anti-ultraviolet nanometer zinc oxide powder coated with cerium oxide and a composite paint containing it. Background technique [0002] The huge loss caused by metal corrosion is well known. People have been trying to improve the anti-corrosion performance of coatings to reduce losses. The emergence of nanomaterials has brought new opportunities and challenges to the coatings industry. Nano-zinc oxide is a new type of high-performance fine inorganic product. Compared with ordinary zinc oxide, nano-zinc oxide has unique surface effects, volume effects, quantum effects and dielectric confinement effects, etc., and is used in coatings. Due to the high-efficiency photocatalytic activity of the current nano-zinc oxide, the degradation of the organic coating is accelerated, resulting in a significant decrease in the weather resistance of the coating, which limits its application. Contents of t...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D163/00C09D133/00C09D167/08C09D167/00C09D161/06C09D161/20C09D7/12C09C1/04C09C3/06
Inventor 徐嘉龙刘福春钱洲亥祝郦伟刘敏孙伟韩恩厚周海飞沈晓明胡家元
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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