Preparation method of wear-resistant hydrophobic glass

A hydrophobic glass and glass technology, which is applied in the field of automobile glass manufacturing, can solve the problems of high cost, difficulty in having both superhydrophobic and light transmittance properties, and poor wear resistance of the superhydrophobic film layer, achieving low cost and excellent wear resistance , The effect of improving the bonding strength

Active Publication Date: 2012-06-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are currently the following technical difficulties in the preparation of super-hydrophobic surfaces on the surface of automotive glass: the super-hydrophobic film layer has poor wear resistance, and it is difficult to have both super-hydrophobic and light-transmitting properties. Complex processes such as decontamination, degreasing, and surface activation are required before coating, and the cost is higher. Higher cost than ordinary hydrophobic glass

Method used

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  • Preparation method of wear-resistant hydrophobic glass
  • Preparation method of wear-resistant hydrophobic glass
  • Preparation method of wear-resistant hydrophobic glass

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 2 As shown, the preparation method of the wear-resistant hydrophobic glass of the present embodiment specifically includes the following steps:

[0027] A: Preparation of SiO 2 / Resin mixed sol: Measure 50ml of absolute ethanol, 4ml of ammonia water, and 4ml of tetraethyl orthosilicate for mixing, and stir at 60°C for 90 minutes at a speed of 100 rpm to obtain SiO 2 Sol; then add Dow 350 curing agent to Dow epoxy resin 301 with a ratio of 28wt%, after stirring evenly, add SiO according to the mass ratio of 0.5% 2 In the sol, continue to stir at 300 rpm for 30 minutes to obtain a uniform SiO 2 / resin mixed sol; the concentration of above-mentioned ammoniacal liquor is 30%;

[0028] B: Glass pre-treatment: Polish the glass with 80-mesh cerium oxide polishing powder, rinse with deionized water and dry with hot air to remove the dirt on the glass surface, and then use 98% sulfuric acid and 33% hydrogen peroxide solution Mix according to the volume ratio ...

Embodiment 2

[0036] Such as figure 2 As shown, the preparation method of the wear-resistant hydrophobic glass of the present embodiment specifically includes the following steps:

[0037] A: Preparation of SiO 2 / Resin mixed sol: Measure 50ml of methanol, 1.5ml of ammonia water, and 1.5ml of tetraethyl orthosilicate to mix, stir at 60°C for 90 minutes at a speed of 100 rpm to obtain SiO 2 sol; then add Dow 350 curing agent to the polyacrylic acid resin in the proportion of 28wt%, after stirring evenly, add SiO according to the mass ratio of 1% 2 In the sol, continue to stir at 300 rpm for 30 minutes to obtain a uniform SiO 2 / resin mixed sol; the concentration of above-mentioned ammoniacal liquor is 30%;

[0038] B: Glass pre-treatment: Polish the glass with 100-mesh cerium oxide polishing powder, rinse with deionized water and dry with hot air to remove the dirt on the glass surface, and then use 98% sulfuric acid and 33% hydrogen peroxide solution Mix according to the volume ratio o...

Embodiment 3

[0046] Such as figure 2 As shown, the preparation method of the wear-resistant hydrophobic glass of the present embodiment specifically includes the following steps:

[0047] A: Preparation of SiO 2 / Resin mixed sol: Measure 50ml of acetone, 3.5ml of ammonia water, and 3.5ml of orthobutyl silicate for mixing, and stir at 60°C for 90 minutes at a speed of 100 rpm to obtain SiO 2 sol; then add Dow 350 curing agent to the unsaturated polyester resin in the proportion of 28wt%, after stirring evenly, add SiO according to the mass ratio of 1%. 2 In the sol, continue to stir at 300 rpm for 30 minutes to obtain a uniform SiO 2 / resin mixed sol; the concentration of above-mentioned ammoniacal liquor is 30%;

[0048] B: Glass pre-treatment: Polish the glass with 80-100 mesh cerium oxide polishing powder, rinse with deionized water and dry with hot air to remove the dirt on the glass surface, and then use sulfuric acid with a concentration of 98% and sulfuric acid with a concentrat...

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Abstract

The invention provides a preparation method of wear-resistant hydrophobic glass which is excellent in wear resistance, high in light permeability and low in preparation cost. The method includes steps of A, preparation of SiO2 / resin mixed sol; B, preprocessing of glass; C, coating of a SiO2 / resin composite membrane on the surface of glass; D, solidification; E, modification via modifier; and F, postprocessing. The preparation method has the advantages that firstly, particle size of SiO2 is controlled in a range of from 90 to 110nm by controlling PH value of prepared sol solution, so that high light transmission can be guaranteed while proper roughness can be provided for a hydrophobic membrane layer; secondly, by means of the technique that resin and SiO2 gel are mixed and directly coated, SiO2 particles are wrapped by resin, and structural strength among the SiO2 particles and between the SiO2 particles and a glass substrate can be improved greatly; and thirdly, using the once filming technique for the SiO2 / resin mixed gel is simpler in process and lower in cost than using the traditional technique for separately coating SiO2 gel and resin.

Description

technical field [0001] The invention belongs to the technical field of automobile glass manufacturing, and in particular relates to a preparation method of wear-resistant hydrophobic glass. Background technique [0002] The surface of silicate glass is a high-energy, hydrophilic surface. When water droplets spread randomly on the glass, the light transmission of the glass will deteriorate, which brings a lot of inconvenience to people's life and work. When the car is driving at high speed in rainy days, rainwater and muddy water tend to stick to the surface of the windshield glass or rearview mirror glass, which seriously affects the driver's sight. Even if the wiper is used, there will be many dead spots, which will increase the probability of accidents. As for the side windows and rearview mirrors, the wipers can do nothing. [0003] At present, Toyota Camry, Mazda Ruiyi, Volvo V70 and other models are equipped with hydrophobic coating technology on the front door side wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C03C17/32
Inventor 熊建民陈大华
Owner CHERY AUTOMOBILE CO LTD
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