Transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions and preparation method thereof

Abstract

The invention discloses transparent super-hydrophobic glass with anti-fog and dewdrop self-cleaning functions and a preparation method of the transparent super-hydrophobic glass. The preparation method comprises the steps of: performing high-temperature phase splitting treatment on sodium borosilicate glass to form an alkali-rich sodium-boron phase and a silicon-rich oxygen phase which are interpenetrated, then removing the alkali-rich sodium-boron phase through an acid etching process to reserve a high-silicon-content glass-phase porous three-dimensional network structure coating, and finallyreducing the surface energy through a fluorination process to obtain a transparent super-hydrophobic glass coating. The transparent super-hydrophobic glass with anti-fog and dewdrop self-cleaning functions and the preparation method of the transparent super-hydrophobic glass have the advantages of a simple process, easy operation, low requirements for equipment and low cost, and a new idea is provided for the preparation of transparent glass with a self-cleaning property.

Description

technical field

[0001] The invention belongs to the field of material chemistry and relates to a hydrophobic coating technology, in particular to transparent superhydrophobic glass with anti-fog and dew drop self-cleaning functions and a preparation method thereof. Background technique

[0002] Wettability is one of the important characteristics of a solid surface. The contact angle is usually used to characterize the wettability of a liquid to a solid. A superhydrophobic surface generally refers to a surface whose contact angle with water droplets is greater than 150° and the rolling angle is less than 10°. The superhydrophobic surface has many unique properties: such as self-cleaning, anti-frost, hydrophobic, oleophobic, low friction coefficient, etc., and can be widely used on glass substrates such as automotive glass, solar panels, and computer screens.

[0003] At present, if superhydrophobic coatings are to be used on glass substrates, the transparency and durability o...

Examples

Embodiment 1

[0032] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0033] (1) The main component of the sodium borosilicate glass used is SiO 2 68 copies, B 2 o 3 23 parts, Na 2 7 parts of O, 2 parts of other elements such as Mg and Ca; place the glass in acetone, absolute ethanol and deionized water in turn, and use a 400w ultrasonic cleaner to ultrasonically clean them for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0034] (2) Put the cleaned glass sheet in a tube furnace, heat-preserve it at 700°C for 1 hour, and heat up at a rate of 5-6°C / min, and then cool it with the furnace; and anhydrous ethanol for 15 min, then rinsed with deionized water and washed with N 2 blow dry.

[0035] (3) In parts by mass, 3 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 0.5 parts of ammonium fluoride are dropped into 100 parts of deionized water, and the glass after...

Embodiment 2

[0039] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0040] (1) The main component of the sodium borosilicate glass used is SiO 2 68 copies, B 2 o 3 23 parts, Na 2 7 parts of O, 2 parts of other elements such as Mg and Ca; place them in acetone, absolute ethanol, and deionized water in turn, and use a 400w ultrasonic cleaner to ultrasonically clean them for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0041] (2) Put the cleaned glass sheet in a tube furnace, heat preservation treatment at 680°C for 1.5h, the heating rate is 5-6°C / min, and then cool with the furnace; then use the phase-separated glass Acetone and absolute ethanol were ultrasonically cleaned for 15 min, then rinsed with deionized water and washed with N 2 blow dry.

[0042] (3) In parts by mass, 5 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 1 part of ammonium fluoride ar...

Embodiment 3

[0047] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0048] (1) The main component of the sodium borosilicate glass used is SiO 2 62 copies, B 2 o 3 28 parts, Na 2 9 parts of O, 1 part of other elements such as Mg, Ca, etc.; place them in acetone, absolute ethanol and deionized water in order to ultrasonically clean them with a 400w ultrasonic cleaner for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0049] (2) Place the cleaned glass piece in a tube furnace, heat-preserve it at 620°C for 12 hours, and heat up at a rate of 5-6°C / min, and then cool with the furnace. Afterwards, the glass after the phase separation treatment was ultrasonically cleaned with acetone and absolute ethanol for 15 min, rinsed with deionized water, and washed with N 2 blow dry.

[0050] (3) In parts by mass, 3 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 0.5 part...

technical field

[0001] The invention belongs to the field of material chemistry and relates to a hydrophobic coating technology, in particular to transparent superhydrophobic glass with anti-fog and dew drop self-cleaning functions and a preparation method thereof. Background technique

[0002] Wettability is one of the important characteristics of a solid surface. The contact angle is usually used to characterize the wettability of a liquid to a solid. A superhydrophobic surface generally refers to a surface whose contact angle with water droplets is greater than 150° and the rolling angle is less than 10°. The superhydrophobic surface has many unique properties: such as self-cleaning, anti-frost, hydrophobic, oleophobic, low friction coefficient, etc., and can be widely used on glass substrates such as automotive glass, solar panels, and computer screens.

[0003] At present, if superhydrophobic coatings are to be used on glass substrates, the transparency and durability o...

Examples

Embodiment 1

[0032] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0033] (1) The main component of the sodium borosilicate glass used is SiO 2 68 copies, B 2 o 3 23 parts, Na 2 7 parts of O, 2 parts of other elements such as Mg and Ca; place the glass in acetone, absolute ethanol and deionized water in turn, and use a 400w ultrasonic cleaner to ultrasonically clean them for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0034] (2) Put the cleaned glass sheet in a tube furnace, heat-preserve it at 700°C for 1 hour, and heat up at a rate of 5-6°C / min, and then cool it with the furnace; and anhydrous ethanol for 15 min, then rinsed with deionized water and washed with N 2 blow dry.

[0035] (3) In parts by mass, 3 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 0.5 parts of ammonium fluoride are dropped into 100 parts of deionized water, and the glass after...

Embodiment 2

[0039] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0040] (1) The main component of the sodium borosilicate glass used is SiO 2 68 copies, B 2 o 3 23 parts, Na 2 7 parts of O, 2 parts of other elements such as Mg and Ca; place them in acetone, absolute ethanol, and deionized water in turn, and use a 400w ultrasonic cleaner to ultrasonically clean them for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0041] (2) Put the cleaned glass sheet in a tube furnace, heat preservation treatment at 680°C for 1.5h, the heating rate is 5-6°C / min, and then cool with the furnace; then use the phase-separated glass Acetone and absolute ethanol were ultrasonically cleaned for 15 min, then rinsed with deionized water and washed with N 2 blow dry.

[0042] (3) In parts by mass, 5 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 1 part of ammonium fluoride ar...

Embodiment 3

[0047] The transparent superhydrophobic glass with anti-fog and dewdrop self-cleaning functions of the present invention is prepared by the following steps:

[0048] (1) The main component of the sodium borosilicate glass used is SiO 2 62 copies, B 2 o 3 28 parts, Na 2 9 parts of O, 1 part of other elements such as Mg, Ca, etc.; place them in acetone, absolute ethanol and deionized water in order to ultrasonically clean them with a 400w ultrasonic cleaner for 10 minutes, and dry them in an oven at 80°C for 10 minutes;

[0049] (2) Place the cleaned glass piece in a tube furnace, heat-preserve it at 620°C for 12 hours, and heat up at a rate of 5-6°C / min, and then cool with the furnace. Afterwards, the glass after the phase separation treatment was ultrasonically cleaned with acetone and absolute ethanol for 15 min, rinsed with deionized water, and washed with N 2 blow dry.

[0050] (3) In parts by mass, 3 parts of hydrofluoric acid, 6 parts of sulfuric acid, and 0.5 part...

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