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Preparation method of anti-fog self-cleaning glass with composite coating

A composite coating and self-cleaning technology, applied in the field of glass manufacturing, can solve the problems of low solar energy utilization, short composite time, short catalytic time, and reduced actual use value of titanium dioxide, and achieve excellent light transmittance, excellent self-cleaning, production. low cost effect

Inactive Publication Date: 2015-11-18
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, titanium dioxide has two shortcomings as a self-cleaning coating agent: first, the recombination rate of photogenerated electron-hole pairs is very fast, and the recombination time is shorter than its catalytic time; Low; these deficiencies have led to a reduction in the practical value of titanium dioxide

Method used

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  • Preparation method of anti-fog self-cleaning glass with composite coating
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  • Preparation method of anti-fog self-cleaning glass with composite coating

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preparation example Construction

[0040] A method for preparing an anti-fog self-cleaning glass with a composite coating, comprising the following steps:

[0041] (1) Hydroxylation of ordinary glass surface: prepare piranha solution, control the temperature at 50-100°C, add cleaned ordinary glass, oxidize for 1-120min, wash with deionized water and dry after oxidation;

[0042] (2) Amination of the surface of the glass: put the glass obtained in step (1) in toluene, add a silane coupling agent whose terminal group is an amino group, stop the reaction after reflux for 5-30 hours, take out the glass piece, clean it ultrasonically and place it in dry at room temperature;

[0043] (3) Graphene oxide grafting: Add the glass obtained in step (2) to the graphene oxide organic solvent, under the action of a dehydrating agent, stop the reaction after reflux for 5-24 hours, take out the glass, ultrasonically clean it and place it at room temperature down to dry;

[0044] (4) Deposition of titanium dioxide nanoparticle...

Embodiment 1

[0048] A method for preparing an anti-fog self-cleaning glass with a composite coating, comprising the following steps:

[0049] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 20*20mm, ultrasonic cleaning; then prepare piranha solution, control the temperature at 80°C, add clean ordinary glass, control the oxidation time at 60min, and use it after stopping Rinse with deionized water and dry;

[0050] (2) Amination of the glass surface terminal: put the hydroxylated glass flakes in 100mL of toluene, add 5mL of γ-aminopropyltrimethoxysilane, stop the reaction after refluxing for 24 hours, take out the glass flakes, and use ethanol and water to sonicate Wash and dry at room temperature;

[0051] (3) Graphene oxide grafted glass: Add the amino-terminated glass to 1 mg / mL graphene oxide methanol, and add dehydrating agent DCC, stop the reaction after reflux for 24 hours, take out the glass piece, and use ethanol and water to sonicate Wash a...

Embodiment 2

[0054] A method for preparing an anti-fog self-cleaning glass with a composite coating, comprising the following steps:

[0055] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 20*20mm, ultrasonic cleaning; then configure piranha solution, control the temperature at 50°C, add clean ordinary glass, control the oxidation time at 120min, and use it after stopping Rinse with deionized water and dry;

[0056] (2) Amination of the surface of the glass: put the hydroxylated glass on the surface in 100mL of toluene, add 10mL of γ-aminopropyltrimethoxysilane, stop the reaction after refluxing for 5 hours, take out the glass, and use ethanol and water to sonicate Wash and dry at room temperature;

[0057] (3) Graphene oxide grafted glass: Add the amino-terminated glass to 1 mg / mL graphene oxide ethanol, and add dehydrating agent EDC, stop the reaction after reflux for 12 hours, take out the glass piece, wash with ethanol, water Ultrasonic cleanin...

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Abstract

The invention relates to a preparation method of anti-fog self-cleaning glass with a composite coating. The method includes the following steps of soaking ordinary glass in a piranha solution to be subjected to surface hydroxylation, putting the glass where surface hydroxylation is conducted in methylbenzene, adding a silane coupling agent with amidogen as the end group to conduct surface end amination, adding the glass where surface end amination is conducted to graphene oxide organic solvent to be subjected to graphene oxide grafting under the effect of a dewatering agent, putting the glass where graphene oxide grafting is conducted in titanium dioxide sol, and conducting sedimentation and vacuum drying to obtain the anti-fog self-cleaning glass with the titanium dioxide and graphene oxide composite coating.

Description

technical field [0001] The invention relates to the technical field of glass manufacturing, in particular to a method for preparing an anti-fog self-cleaning glass with a composite coating. Background technique [0002] In rainy or humid weather, especially in winter, moisture is easy to condense on various glass products such as building glass windows, car windshields, car rear view mirrors, and spectacle lenses. A similar situation can occur in places where steam accumulates, such as bathrooms and kitchens. Moisture or steam condenses on the surface of glass products to form tiny water droplets, which is called glass atomization. Generally, the water droplets on the glass substrate are in the shape of a small hemisphere, which is easy to produce a prism-like refraction effect, thereby affecting the visibility of the mirror image or the light transmittance of the glass. The atomization of glass can bring inconvenience to people's life. For example, in the cold winter, en...

Claims

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Application Information

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IPC IPC(8): C03C17/42
Inventor 彭淑鸽栗乾明郑清霄郝海娇祝迎春
Owner HENAN UNIV OF SCI & TECH
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