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Non-toxic, environment-friendly and anti-fouling self-cleaning coating and preparation method thereof

A non-toxic, environmentally friendly, self-cleaning technology, applied in the field of coatings, can solve the problems of decreased transparency, poor cleaning properties of coatings, and reduced photocatalytic activity of nanoparticles, so as to achieve wide application, improve dispersion effect, and improve self-cleaning effect Effect

Active Publication Date: 2018-09-04
上海君子兰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of nano-sol particles can solve the problem of transparency, but the photocatalytic self-cleaning properties of the coating are poor; nano-powders have high photocatalytic activity, but the problem of dispersion and compatibility with adhesives needs to be solved
The dispersion problem is generally solved by grinding, but grinding will reduce the photocatalytic activity of nanoparticles
(2) The problem of service life
Due to the photocatalysis of nanoparticles, the organic components in the binder are gradually decomposed, or the organic coating under the self-cleaning coating is catalyzed and decomposed, resulting in aging phenomena such as yellowing, powdering, cracking, and decreased transparency. The service life of layers is facing great challenges

Method used

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  • Non-toxic, environment-friendly and anti-fouling self-cleaning coating and preparation method thereof
  • Non-toxic, environment-friendly and anti-fouling self-cleaning coating and preparation method thereof
  • Non-toxic, environment-friendly and anti-fouling self-cleaning coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation process of the modified Europium Nitride and Ytterbium co-doped nano-TiO2 is as follows:

[0032] (1) Preparation of solution A: measure 20ml of butyl titanate and add it to 30ml of absolute ethanol, and stir it electromagnetically;

[0033] (2) Preparation of solution B: a certain amount of triethylamine, 10% distilled water, 0.30mL of concentrated nitric acid and a certain amount of Yb(NO 3 ) 3 ·5H 2 O and a certain amount of Eu(NO 3 ) 3 ·6H 2 O was added to 10mL of absolute ethanol; wherein, the amount of triethanolamine was based on the amount of N element and TiO 2 The molar ratio is calculated as 0.5%; Yb(NO 3 ) 3 ·5H 2 The amount of O added is based on Yb element and TiO 2 The molar ratio is calculated as 1.5%; Eu(NO 3 ) 3 ·6H 2 The amount of O added is based on Eu element and TiO 2 The molar ratio is calculated as 1.0%;

[0034] (3) Add solution A dropwise to solution B under ultrasonic stirring, continue to stir to obtain a uniform...

Embodiment 2

[0040] The preparation process of the modified Europium Nitride and Ytterbium co-doped nano-TiO2 is as follows:

[0041] (1) Preparation of solution A: Measure 40 mL of butyl titanate and add it to 60 mL of absolute ethanol, and stir it electromagnetically;

[0042] (2) Preparation of solution B: a certain amount of triethylamine, 20 mL of distilled water, 1 mL of concentrated nitric acid and a certain amount of Yb(NO 3 ) 3 ·5H 2 O and a certain amount of Eu(NO 3 ) 3 ·6H 2 O was added to 20mL of absolute ethanol; wherein, the amount of triethanolamine was based on the amount of N element and TiO 2 The molar ratio is calculated as 1.5%; Yb(NO 3 ) 3 ·5H 2 The amount of O added is based on Yb element and TiO 2 The molar ratio is calculated as 2.0%; Eu(NO 3 ) 3 ·6H 2 The amount of O added is based on Eu element and TiO 2 The molar ratio is calculated as 1.5%;

[0043] (3) Add solution A dropwise to solution B under ultrasonic stirring, continue to stir to obtain a un...

Embodiment 3

[0049] The preparation process of the modified Europium Nitride and Ytterbium co-doped nano-TiO2 is as follows:

[0050] (1) Preparation of solution A: Measure 30 mL of butyl titanate and add it to 45 mL of absolute ethanol, and stir it electromagnetically;

[0051] (2) Preparation of solution B: a certain amount of triethylamine, 15mL of distilled water, 0.7mL of concentrated nitric acid and a certain amount of Yb(NO 3 ) 3 ·5H 2 O and a certain amount of Eu(NO 3 ) 3 ·6H 2 O was added to 15mL of absolute ethanol; wherein, the amount of triethanolamine was based on the amount of N element and TiO 2 The molar ratio is calculated as 2.5%; Yb(NO 3 ) 3 ·5H 2 The amount of O added is based on Yb element and TiO 2 The molar ratio is calculated as 2.5%; Eu(NO 3 ) 3 ·6H 2 The amount of O added is based on Eu element and TiO 2 The molar ratio is calculated as 2.0%;

[0052] (3) Add solution A dropwise to solution B under ultrasonic stirring, continue to stir to obtain a un...

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Abstract

The invention relates to a non-toxic, environment-friendly and anti-fouling self-cleaning coating and a preparation method thereof. The coating comprises 50-70 parts of styrene-acrylic emulsion, 15-20parts of modified nitrogen-germanium-ytterbium co-doped nano-titania, 4-6 parts of dispersing agent, 1-2 parts of antifoaming agent, 5-7 parts of waterproof agent, 3-5 parts of leveling agent, 3-5 parts of film forming aid and 30-50 parts of water; the pH of the coating is 7-9. The preparation method of the coating includes the steps that S1, the styrene-acrylic emulsion is weighed, and the water, the dispersing agent, the antifoaming agent and the waterproof agent are sequentially added; S2, the modified nitrogen-germanium-ytterbium co-doped nano-titania is added into the solution to be evenly mixed; S3, the film forming aid and the leveling agent are added into the solution. The coating has high self-cleaning efficiency and has non-toxic, environment-friendly and anti-fouling effects, thereby being capable of being widely applied.

Description

technical field [0001] The invention relates to a paint, in particular to a non-toxic, environment-friendly, antifouling and self-cleaning paint. Background technique [0002] The self-cleaning coating can automatically fall off surface pollutants or dust particles under the action of gravity, rain, wind and other external forces or remove them through photocatalytic degradation. It has the advantages of water saving, energy saving and environmental protection. It is widely used in construction, transportation, new energy, etc. The industry has important application prospects as shown in the table, and has become one of the research hotspots of advanced functional coatings in recent years. Currently, two types of self-cleaning coatings have been developed based on different self-cleaning principles. One is the super-hydrophobic water contact angle self-cleaning coating, which takes away dust through the rolling of water droplets, and realizes the self-cleaning function simi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D125/14
CPCC08K2003/2241C08K2201/011C08L2205/03C09D5/1687C09D125/14C08L33/02C08L83/04C08K13/06C08K9/04C08K9/08C08K3/22C08K5/098C08K5/521
Inventor 韩芳
Owner 上海君子兰新材料股份有限公司