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Self-cleaning amphiphobic coating for degrading NO and preparation method of self-cleaning amphiphobic coating

A kind of sparse coating and self-cleaning technology, which is applied in coatings, separation methods, chemical instruments and methods, etc., can solve the problems of reducing the durability of super-amphiphobic coatings, losing super-amphiphobic properties, and being easy to damage, and achieving improved UV stability, excellent photocatalytic activity and adsorption effect, improved anchoring effect

Inactive Publication Date: 2021-06-11
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface delamination of this super-amphiphobic coating is easily damaged by external mechanical action during use, thereby reducing the durability of the super-amphiphobic coating and losing its super-amphiphobic properties.

Method used

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  • Self-cleaning amphiphobic coating for degrading NO and preparation method of self-cleaning amphiphobic coating
  • Self-cleaning amphiphobic coating for degrading NO and preparation method of self-cleaning amphiphobic coating
  • Self-cleaning amphiphobic coating for degrading NO and preparation method of self-cleaning amphiphobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for preparing a self-cleaning amphobic coating for degrading NO, the specific steps are as follows:

[0040] Step 1: In parts by weight, 7 parts of P25 nano-titanium dioxide were added to 70 parts of 10mol / L sodium hydroxide solution, and stirred for 2 hours to obtain a suspension;

[0041] Step 2: Add the suspension into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150°C for 48 hours to obtain a hydrothermal product;

[0042] Step 3: Wash the hydrothermal product 5-6 times with dilute hydrochloric acid, adjust the pH to 1-2, and stir for 24 hours;

[0043]Step 4: filter the precipitate, wash with deionized water until neutral, add absolute ethanol to disperse for 24 hours, and obtain a suspension;

[0044] Step 5: Suction filter the suspension in step 4, and dry at 110°C to constant weight to obtain titanium dioxide nanotubes;

[0045] Step 6: Disperse 0.1 part of epoxy resin (E44) in 18 parts of absolute ethanol, stir until dissolv...

Embodiment 2

[0051] A method for preparing a self-cleaning amphobic coating for degrading NO, the specific steps are as follows:

[0052] Step 1: In parts by weight, 10 parts of P25 nano-titanium dioxide were added to 70 parts of 10mol / L sodium hydroxide solution, and stirred for 2 hours to obtain a suspension;

[0053] Step 2: Add the suspension into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150°C for 48 hours;

[0054] Step 3: Wash the hydrothermal product 5-6 times with dilute hydrochloric acid, adjust the pH to 1-2, and stir for 24 hours;

[0055] Step 4: Filter the precipitate generated in step 3, wash with deionized water until neutral, add absolute ethanol to disperse for 24 hours, and obtain a suspension;

[0056] Step 5: Suction filter the suspension prepared in Step 4, and dry at 110°C to constant weight to obtain titanium dioxide nanotubes;

[0057] Step 6: Disperse 0.4 parts of epoxy resin (E44) in 18 parts of absolute ethanol, stir until dissolve...

Embodiment 3

[0063] A method for preparing a self-cleaning amphobic coating for degrading NO, the specific steps are as follows:

[0064] Step 1: In parts by weight, 12 parts of P25 nano-titanium dioxide were added to 70 parts of 10mol / L sodium hydroxide solution, and stirred for 2 hours to obtain a suspension;

[0065] Step 2: Add the suspension into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150°C for 48 hours;

[0066] Step 3: Wash the hydrothermal product 5-6 times with dilute hydrochloric acid, adjust the pH to 1-2, and stir for 24 hours;

[0067] Step 4: Filter the precipitate generated in step 3, wash with deionized water until neutral, add absolute ethanol to disperse for 24 hours, and obtain a suspension;

[0068] Step 5: Suction filter the suspension in step 4, and dry at 110°C to constant weight to obtain titanium dioxide nanotubes;

[0069] Step 6: Disperse 0.7 parts of epoxy resin (E44) in 18 parts of absolute ethanol, stir until dissolved, add 0....

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Abstract

The invention discloses a self-cleaning amphiphobic coating for degrading NO and a preparation method of the self-cleaning amphiphobic coating, and belongs to the field of photocatalytic degradation of NO. According to the preparation method of the self-cleaning amphiphobic coating for degrading NO, the amphiphobic coating capable of being used in a large area is prepared by adopting a simple spraying method, and aiming at the problem that the robustness of the amphiphobic coating is poor, epoxy resin with high bonding strength is introduced to improve the durability of the amphiphobic coating; the titanium dioxide nanotube has excellent photocatalytic activity and adsorption effect, and the titanium dioxide nanotube is introduced, so that the coating has excellent performance of photocatalytic degradation of NO; the one-dimensional structure of the titanium dioxide nanotube is beneficial to the construction of a nano hierarchical structure on the surface of the coating and the formation of a super-amphiphobic surface; and in order to solve the problem of ultraviolet stability of the coating, nano silicon dioxide is introduced, so that the situation that the epoxy resin is directly degraded by strong oxidizing groups generated by nano titanium dioxide nanotubes is avoided, the anchoring effect of nano titanium dioxide is improved, and the ultraviolet stability of the coating is greatly improved.

Description

technical field [0001] The invention belongs to the field of photocatalytic degradation of NO, in particular to a self-cleaning amphiphobic coating for degrading NO and a preparation method thereof. Background technique [0002] With the rapid development of industrialization and the continuous increase of car ownership, the problem of air pollution is getting worse and needs to be solved urgently. As a major air pollutant, NO has serious damage to the ecological environment and human health. For this reason, people have developed photocatalytic NO degradation materials. As a green, stable and efficient technology, photocatalytic technology has attracted much attention. Photocatalytic coatings have the advantages of high catalyst utilization, good economy and strong versatility, and are favored in the field of air purification. Among them, the photocatalytic coating loaded with nano-titanium dioxide is one of them. Nano-titanium dioxide is used as a photocatalyst, which ca...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/61C09D7/63B01D53/56B01D53/86
CPCC09D163/00C09D7/61C09D7/70C09D7/63B01D53/86B01D53/56B01D2255/20707B01D2255/30B01D2255/802B01D2259/804C08K2201/011C08K2003/2241C08K7/00C08K3/22C08K7/26C08K5/5419Y02C20/30
Inventor 夏慧芸刘冠宇宋莉芳张文硕牛艳辉卢昌杰杨浩田
Owner CHANGAN UNIV
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