A kind of 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
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[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 1-120 min, 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 h, take out the glass piece, clean it ultrasonically and place it 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 h, take out the glass, and place it in the dry at room temperature;
[0044] (4) Deposition of titanium dioxide nanoparticles: put the glass flakes obtained in...
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: First, cut the ordinary glass sheet into 20*20 mm, and ultrasonically clean it; then configure piranha solution, control the temperature at 80°C, add clean ordinary glass, and control the oxidation time at 60 min. Rinse with deionized water and dry;
[0050] (2) Amination of the surface of the glass: put the surface hydroxylated glass piece in 100 mL of toluene, add 5 mL of γ-aminopropyltrimethoxysilane, reflux for 24 h to stop the reaction, take out the glass piece, wash with ethanol , Ultrasonic cleaning with water, and drying 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 h, take out the glass piece, and wash with ethanol, water Ultrasonic cleaning, d...
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: First, cut the ordinary glass sheet into 20*20 mm, and ultrasonically clean it; then configure piranha solution, control the temperature at 50°C, add clean ordinary glass, and control the oxidation time at 120 min. Rinse with deionized water and dry;
[0056] (2) Amination of the surface of the glass: put the hydroxylated glass on the surface in 100 mL of toluene, add 10 mL of γ-aminopropyltrimethoxysilane, stop the reaction after refluxing for 5 h, take out the glass and wash with ethanol , Ultrasonic cleaning with water, and drying 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 h, take out the glass piece, and wash with ethanol, Ultrasonic cleaning with...
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