Method for preparing superhydrophobic and self-cleaning glass

Abstract

The invention relates to a method for preparing superhydrophobic and self-cleaning glass. The method comprises the following steps of submerging common glass in a piranha solution for surface hydroxylation treatment, putting the glass subjected to surface hydroxylation treatment in toluene, adding a silane coupling agent, of which terminal groups are double bonds, into the toluene for surface terminal double-bond treatment, then, covalently grafting a hydrophobic polymer to the surface of the glass by an in-situ polymerization or spraying method, and carrying out cleaning and airing, thereby preparing the superhydrophobic and self-cleaning glass. According to the method for preparing the superhydrophobic and self-cleaning glass, disclosed by the invention, a uniform and chemically-grafted polymer coating can be formed on the surface of the common glass and has good super-hydrophobicity, stability and light transmittance and excellent self-cleaning performance.

Description

technical field

[0001] The invention relates to the technical field of glass manufacturing, in particular to a method for preparing superhydrophobic self-cleaning glass. Background technique

[0002] Glass is widely used in construction, automobiles, etc. Problems such as air pollution make these glasses very easy to get dirty and lose their light transmittance. The cleaning work of glass also becomes difficult, especially for high-rise buildings, cleaning glass also has very high danger. A new type of self-cleaning glass has been extensively and intensively studied to address the above problems. The so-called self-cleaning glass refers to the unique physical and chemical properties of the surface of ordinary glass after special physical or chemical treatment, so that the glass itself keeps fresh automatically and has a long-lasting light transmittance to keep the glass as bright as new. status. It can make the glass no longer go through the traditional manual scrubbing m...

Examples

Embodiment 1

[0040] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0041] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass piece into 10*10mm, 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;

[0042] (2) Double bond on the surface of the glass: Put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 5mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 24h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0043] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 70°C; add 10 mL of styrene monomer, Under the protection ...

Embodiment 2

[0045] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0046] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 10*10mm, ultrasonic cleaning; then configure piranha solution, control the temperature at 500C, add clean ordinary glass, control the oxidation time at 120min, and use deionization after stopping Wash with water and dry;

[0047](2) Double bond on the surface of the glass: put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 10mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 5h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0048] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 60°C; add 10 mL of styrene monomer, Under the protection...

Embodiment 3

[0050] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0051] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 10*10mm, ultrasonic cleaning; then configure piranha solution, control the temperature at 1000C, add clean ordinary glass, control the oxidation time at 1min, stop with deionization Wash with water and dry;

[0052] (2) Double bond on the surface of the glass: Put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 1mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 30h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0053] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 80°C; add 10 mL of styrene monomer, Under the protection of N2, 0.09 ...

technical field

[0001] The invention relates to the technical field of glass manufacturing, in particular to a method for preparing superhydrophobic self-cleaning glass. Background technique

[0002] Glass is widely used in construction, automobiles, etc. Problems such as air pollution make these glasses very easy to get dirty and lose their light transmittance. The cleaning work of glass also becomes difficult, especially for high-rise buildings, cleaning glass also has very high danger. A new type of self-cleaning glass has been extensively and intensively studied to address the above problems. The so-called self-cleaning glass refers to the unique physical and chemical properties of the surface of ordinary glass after special physical or chemical treatment, so that the glass itself keeps fresh automatically and has a long-lasting light transmittance to keep the glass as bright as new. status. It can make the glass no longer go through the traditional manual scrubbing m...

Examples

Embodiment 1

[0040] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0041] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass piece into 10*10mm, 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;

[0042] (2) Double bond on the surface of the glass: Put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 5mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 24h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0043] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 70°C; add 10 mL of styrene monomer, Under the protection ...

Embodiment 2

[0045] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0046] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 10*10mm, ultrasonic cleaning; then configure piranha solution, control the temperature at 500C, add clean ordinary glass, control the oxidation time at 120min, and use deionization after stopping Wash with water and dry;

[0047](2) Double bond on the surface of the glass: put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 10mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 5h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0048] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 60°C; add 10 mL of styrene monomer, Under the protection...

Embodiment 3

[0050] A preparation method of superhydrophobic self-cleaning glass, comprising the following steps:

[0051] (1) Hydroxylation of ordinary glass surface: firstly cut the ordinary glass sheet into 10*10mm, ultrasonic cleaning; then configure piranha solution, control the temperature at 1000C, add clean ordinary glass, control the oxidation time at 1min, stop with deionization Wash with water and dry;

[0052] (2) Double bond on the surface of the glass: Put 10 pieces of hydroxylated glass on the surface in 100mL of toluene, add 1mL of γ-methacryloxypropyltrimethoxysilane, stop the reaction after reflux for 30h, take out Glass slides were ultrasonically cleaned with ethanol and water, and dried at room temperature;

[0053] (3) Glass-grafted polystyrene: In the reaction bottle, add 10 double-bonded glass sheets prepared in step 2, the reaction medium is distilled water, and the polymerization temperature is 80°C; add 10 mL of styrene monomer, Under the protection of N2, 0.09 ...

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