Less water drop residual glass for hydrophobic vehicle and preparation method thereof

A technology of glass and water droplets, applied in the field of hydrophobic vehicle glass and its preparation, can solve the problem that hydrophobic glass cannot be used for driving safety, and achieve the effect of increasing volume and improving driving safety

Active Publication Date: 2013-10-02
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the hydrophobic glass prepared by the prior art cannot play a role in improving driving safety in light rainy days, the present invention provides a method for preparing hydrophobic automotive glass with low water droplet residue

Method used

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Examples

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preparation example Construction

[0026] A method for preparing hydrophobic automotive glass with low water droplet residue, said method is operated according to the following steps:

[0027] In step 1, the glass surface is first polished with 10% cerium oxide polishing powder aqueous solution, then the polished glass surface is cleaned with tap water, absolute ethanol and deionized water in sequence, and finally dried to obtain glass A, which is set aside.

[0028] Step 2, coating the surface of glass A with silicate hydrolyzate and drying to obtain glass B.

[0029] Step 2.1, preparation of ethyl orthosilicate hydrolyzate: add silicate into organic solvent, then add 0.1M acid catalyst, put the above mixture into reflux device, reflux at 30-70°C for 12-0.5h , to obtain a silicate hydrolyzate, the weight ratio of the silicate, organic solvent and acid catalyst is: (1-10):100:(0.5-2). Among them, the proportional relationship between the various substances is more critical, because if the proportion is not app...

Embodiment 1

[0047] Add 3g of tetraethyl orthosilicate to 96g of isopropanol solvent, then add 1g of 0.1M nitric acid, and reflux at 60°C for 1 hour to obtain a hydrolyzate of tetraethyl orthosilicate;

[0048] Add 0.5g of dimethyldiethoxysilane and 2g of heptadecafluorodecyltriethoxysilane to 96.5g of isopropanol, then add 1g of 0.1M nitric acid, and reflux at 60°C for 2h to obtain the above two Hydrolyzate of silane mixture.

[0049] Polish the glass surface with a 10wt% aqueous solution of cerium oxide polishing powder, then wash the surface with tap water, absolute ethanol and deionized water in sequence, and dry it for later use to obtain Glass A; solution, and then pull the coating film at a speed of 300 μm / s, and then dry it at room temperature for 10 minutes to obtain glass B; immerse glass B in the hydrolyzed solution of the silane mixture obtained above, and then pull the coating film at a speed of 300 μm / s to obtain Glass C; finally, place glass C in an environment with a tempe...

Embodiment 2

[0052] Add 5g of ethyl orthosilicate to 94g of ethanol solvent, then add 1g of 0.1M hydrochloric acid, and reflux at 40°C for 2h. Obtain the hydrolyzate of ethyl orthosilicate;

[0053] Add 3g of trifluoroalkyltrimethoxysilane and 0.1g of methyltrichlorosilane to 95.9g of ethanol, then add 1.5g of 0.1M hydrochloric acid, and reflux at 40°C for 3h. A hydrolyzate of the above two silane mixtures is obtained.

[0054] Polish the glass surface with a 10wt% aqueous solution of cerium oxide polishing powder, then wash the surface with tap water, absolute ethanol and deionized water in sequence, dry it for later use, and obtain Glass A; Hydrolyzate, wipe directly on the surface of glass A. Then dry at 80°C for 15 minutes to obtain glass B; then use a wiping cloth to dip the hydrolyzate of the silane mixture obtained above, and wipe it directly on the surface of glass B to obtain glass C; Place it in 50% environment for 100 minutes to prepare hydrophobic automotive glass with low w...

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PUM

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Abstract

The invention discloses a piece of less water drop residual glass for a hydrophobic vehicle and a preparation method thereof, belonging to the field of vehicle glass. The method comprises the following steps of firstly plating silicate ester hydrolysate on the surface of a clean glass surface and drying, then plating silane mixture hydrolysate of different hydrophobic degrees, finally carrying out heat treatment on the glass, wherein the silane mixture hydrolysate of different hydrophobic degrees comprises silane I with relatively high hydrophobic degree and silane II with relatively low hydrophobic degree, and the weight ratio of the silane I and the silane II is (1-5):(0.1-2). According to the method, the less water drop residual glass for the hydrophobic vehicle is prepared by forming films of different hydrophobic degrees on the surface of the glass, so that when a car drives on rainy days, small water drops converge by taking an area with low hydrophobic degree on the surface of the hydrophobic glass as a center so as to form large water drops, and the large water drops slip off from the surface of the hydrophobic glass by self, therefore, the small water drops avoid being left on the surface of the glass so as not to affect the transparence of the vehicle glass, and the traffic safety is improved.

Description

technical field [0001] The invention relates to the field of automotive glass, in particular to a hydrophobic automotive glass with low residual water droplets and a preparation method thereof. Background technique [0002] The hydrophobic vehicle glass is prepared by coating the surface of the vehicle glass with a hydrophobic solution and heat-treating it. Using hydrophobic glass, when the car is driving in rainy days, when the raindrops fall on the surface of the glass, it will not form a water curtain that affects the transparency, but will form water droplets that can roll down, so the hydrophobic glass has the effect of improving the transparency of the glass under rain conditions Function, improve the driving safety of the car under rain conditions. [0003] At present, the preparation of hydrophobic automotive glass is mainly obtained by coating an aqueous solution of a substance with a high degree of hydrophobicity and low surface energy on the surface of the glass,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
Inventor 熊建民陈大华王振光
Owner CHERY AUTOMOBILE CO LTD
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