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Glass hydrophobic rainproof coating, preparation method thereof, and application method thereof

A coating and hydrophobic technology, applied in coatings and other directions, can solve the problems of easy peeling, poor hydrophobicity, and inability to achieve mass production, and achieve the effect of simple construction process

Pending Publication Date: 2020-04-10
SUZHOU WHOLENANO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the hydrophobic surface layer is mainly prepared by chemical vapor deposition, sol-gel method, etching method, etc., but these hydrophobic surface layers are not firmly bonded to the glass surface, easy to fall off, poor hydrophobic performance, and cannot be mass-produced

Method used

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  • Glass hydrophobic rainproof coating, preparation method thereof, and application method thereof
  • Glass hydrophobic rainproof coating, preparation method thereof, and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of water-repellent rainproof coating for glass, comprises primer coating and top coating, comprises the following steps:

[0023] Step 1, preparation of mixed solvent

[0024] Water and ethanol are mixed according to a weight ratio of 1:50 to obtain a mixed solvent;

[0025] Step 2, prepare primer coating

[0026] Add 3g of allyltrimethylsilane to 100g of the mixed solvent prepared in step 1, add 0.01g of low molecular weight organic acid acetic acid with a mass fraction of 10% as a catalyst, add low-concentration ammonia water, adjust pH=4, and hydrolyze at 40°C for 4h , to obtain the primer coating;

[0027] Step 3. Prepare the topcoat

[0028] Dissolve 5 g of polysiloxane into 100 g of the mixed solvent prepared in step 1, add 0.001 g of zinc chloride, add 5 g of tetraethoxysilane, and stir at room temperature for 24 hours to obtain the required top coating.

[0029] First apply the primer obtained in step 2 to the glass surface, wipe it evenly with a flan...

Embodiment 2

[0031] Step 1, preparation of mixed solvent

[0032] Water and Virahol are mixed in a weight ratio of 1:1 to obtain a mixed solvent;

[0033] Step 2, prepare primer coating

[0034] Add 7g of allyltrimethylsilane to 100g of the mixed solvent prepared in step 1, add 10g of low molecular weight organic acid acetic acid with a mass fraction of 10% as a catalyst, add low-concentration ammonia water to adjust pH=4, hydrolyze at 40°C for 4h, get primer;

[0035] Step 3. Prepare the topcoat

[0036] Dissolve 10g of polysiloxane into 100g of the mixed solvent prepared in step 1, add 0.1g of Lewis acid catalyst zinc chloride, add 1g of tetraethoxysilane, and stir at room temperature for 24h to obtain the required top coating .

[0037] First apply the primer to the glass surface, wipe it evenly with a velvet cloth, let it stand at room temperature for 0.5h until the solvent is completely evaporated, and obtain a 3um thick primer coating, then apply the top coat to the glass surface...

Embodiment 3

[0040] Step 1, preparation of mixed solvent

[0041] Water and isopropanol are mixed according to a weight ratio of 1:20 to obtain a mixed solvent;

[0042] Step 2, prepare primer coating

[0043] Add 5g of 3-(2,3-glycidoxy)propyltrimethoxysilane to 100g of the mixed solvent prepared in step 1, add 1g of 10% by mass fraction of low-molecular-weight organic acid acetic acid as a catalyst, add low-concentration Adjust pH=4 with ammonia water, hydrolyze for 4 hours at 40°C to obtain primer;

[0044] Step 3. Prepare the topcoat

[0045] Dissolve 6g of polysiloxane into 100g of the mixed solvent prepared in step 1, add 0.05g of Lewis acid catalyst zinc chloride, add 2g of tetraethoxysilane, and stir at room temperature for 24h to obtain the desired top coating .

[0046] First apply the primer to the glass surface, wipe it evenly with a velvet cloth, let it stand at room temperature for 0.5h until the solvent is completely evaporated, and obtain a 3um thick primer coating, then...

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Abstract

The invention discloses a glass hydrophobic rainproof coating, a preparation method thereof and an application method thereof. The glass hydrophobic rainproof coating comprises a bottom coating and asurface coating, the bottom coating is hydrolyzed silane and is prepared from silane a, the surface coating is modified polysiloxane, the molecular weight of the polysiloxane is 5000-15000, and the surface coating is prepared by the polysiloxane and silane b. The invention provides the glass hydrophobic rainproof coating, the preparation method thereof and the application method thereof. Firstly,a surface of glass is coated with a primer coating, then the surface of the glass is coated with a surface coating, and heating and drying are performed at room temperature or in a short time to coatthe surface of glass. The light transmittance of the glass is not influenced; the water contact angle is large, the rolling angle is low, the coating is applied to glass, the inclination angle is generally larger than 30 degrees, rainwater can roll down freely, the rain-proof purpose is achieved, the hydrophobic self-cleaning function is achieved, the glass cleaning frequency or the windscreen wiper using frequency is reduced, the process is simple, the cost is low, the attachment to the surface of the glass is firm, falling is not likely to happen, and the batch production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of building and automobile glass hydrophobic surface preparation, and in particular relates to a glass hydrophobic rainproof coating, a preparation method and an application method. Background technique [0002] Glass curtain walls have been widely used in today's cities. As buildings are getting taller, the difficulty of cleaning glass curtain walls continues to increase, and the cost of cleaning is getting higher and higher. In addition, when driving in the rain, the wiper is the only tool for cleaning the windshield of the car, but the wiper is usually only used for the front glass, and the side glass and rearview mirror cannot be cleaned by the wiper, even if the windshield is attached to the glass. Because the rain film does not have a self-cleaning function, the existence of the rain film attached by rain or dust can easily affect the line of sight and cause traffic accidents. Therefore, in the field ...

Claims

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Application Information

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IPC IPC(8): C03C27/10C03C17/00C03C17/30C03C17/34
CPCC03C27/10C03C17/3405C03C17/006C03C17/009C03C17/30C03C2218/11C03C2218/112C03C2218/32
Inventor 朱红军
Owner SUZHOU WHOLENANO NEW MATERIAL TECH CO LTD
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