Hydrophobic glass preparation method and hydrophobic glass

A technology of hydrophobic glass and hydrophobic film, applied in the field of hydrophobic glass, can solve problems such as structural damage, poor durability, and loss of hydrophobic function of hydrophobic glass

Active Publication Date: 2012-08-08
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These products will lose their hydrophobic function after being used for a period of time, and have the disadvantage of poor durability
Since the hydrophobic film layer on the glass surface is easily rubbed by solid particles in the air, resulting in structural damage, the hydrophobic glass loses its water-repellent function.
At present, there are many ways to improve the durability of glass, such as adding durable compounds to the glass, improving the glass processing technology, and coating the glass surface with a wear-resistant layer, but none of these methods can improve the wear resistance of the hydrophobic layer on the glass surface
Therefore, hydrophobic film technology has not been widely used in automotive glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:

[0031] (1) Mix 1.5 parts by weight of concentrated ammonia water with a mixed solvent of 20 parts by weight of methanol and ethanol (volume ratio 1:2), and stir at 50°C for 22 minutes; then mix 2.5 parts by weight of orthobutyl silicate Mixed with the mixed solvent of methanol and ethanol (volume ratio 1:2) of 20 parts by weight and quickly added to the mixture of strong ammonia water, methanol and ethanol, then stirred at 50°C for 105 minutes, and the stirring speed was 200 rpm, The reaction obtains a first sol containing silica particles, wherein the average particle diameter of the silica particles is about 105 nm;

[0032] (2) γ-(2,3 glycidoxy) propyltrimethoxysilane of 2 parts by weight is added in the above-mentioned first sol, stirred for 1 hour; Then add 0.5 parts by weight of nano polyurethane elastomer, continue Stirring at 25°C for 120 minutes at a stirring s...

Embodiment 2

[0041] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:

[0042] (1) Mix 2 parts by weight of concentrated ammonia water with 10 parts by weight of acetone, and stir at 40°C for 30 minutes; then mix 4 parts by weight of tetraethyl silicate with 10 parts by weight of acetone and quickly add to the concentrated A mixture of ammonia water and acetone, then stirred at 40°C for 120 minutes at a stirring speed of 300 rpm, and reacted to obtain the first sol containing silica particles, wherein the average particle diameter of the silica particles was about 100nm;

[0043] (2) The 3-aminopropyltriethoxysilane of 3 weight parts is joined in the above-mentioned first sol, stirs 1.75 hours; Stirring at ℃ for 105 minutes at a stirring speed of 200 rpm to obtain the second sol;

[0044] (3) Add hydrochloric acid to the above-mentioned second sol, adjust the pH value to 4, then add 1 weight part of hydroxysilicone oil therein, and continue...

Embodiment 3

[0049] This embodiment provides a method for preparing hydrophobic glass, comprising the following steps:

[0050] (1) Mix 1 part by weight of concentrated ammonia water with 2.5 parts by weight of methanol, and stir at 45°C for 25 minutes; then mix 2 parts by weight of tetrabutyl silicate with 2.5 parts by weight of methanol and quickly add A mixture of ammonia water and methanol, then stirred at 45°C for 110 minutes at a stirring speed of 250 rpm, and reacted to obtain the first sol containing silica particles, wherein the average particle size of the silica particles was about 90nm;

[0051] (2) Add 1 part by weight of N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane to the above-mentioned first sol, stir for 0.5 hours; then add 0.1 parts by weight of nano For the polyolefin elastomer, continue to stir at 30°C for 90 minutes at a stirring speed of 300 rpm to obtain the second sol;

[0052] (3) Add nitric acid to the above-mentioned second sol, adjust the pH value to 4, ...

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Abstract

The invention provides a hydrophobic glass preparation method and hydrophobic glass. In the hydrophobic glass preparation process, nano elastomer with good durability is added in a hydrophobic film layer of the glass surface. With the nano elastomer, the hydrophobic film layer under the friction effect of solid particles in the air obtains buffer protection, and a damaging effect of the friction against the hydrophobic film layer is lessened or even eliminated. The hydrophobic glass prepared by the method not only has good hydrophobicity, but also has better durability against friction.

Description

technical field [0001] The invention relates to the technical field of hydrophobic glass, in particular to a preparation method of hydrophobic glass and the hydrophobic glass. Background technique [0002] The surface of glass has high surface energy, and the surface tension generated is much higher than that of water. Therefore, water has wettability to glass. When water droplets expand disorderly on glass, the light transmission of glass will be deteriorated, which is harmful to people. Life and work bring a lot of inconvenience. For example, when a car is driving at high speed in rainy days, rainwater and muddy water 1 will often stick to the surface of the windshield glass or rearview mirror glass, which will seriously affect the driver's sight. And rearview mirror, wiper also powerless. [0003] At present, when most vehicles leave the factory, the front door side window glass and the exterior rearview mirror are coated with a hydrophobic film technology to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C03C17/30
Inventor 熊建民陈大华
Owner CHERY AUTOMOBILE CO LTD
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