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A kind of preparation method of hydrophobic and oil-repellent self-cleaning glass

An oleophobic and self-cleaning technology, applied in the field of hydrophobic and oleophobic self-cleaning glass and its preparation, can solve the problems of small film surface hardness, poor film surface adhesion, long reaction time, etc., to improve hardness and wear resistance. The effect of promoting the bonding speed and the hardness of the film surface

Active Publication Date: 2018-06-26
浙江鼎昇新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the hydrophobic self-cleaning glass has a good self-cleaning effect, it has certain shortcomings. The main shortcomings are poor film surface adhesion, low film surface hardness, and poor friction resistance. The reasons for these shortcomings are due to the fluorine-modified alkyl The chemical bonding between silane nanoparticles and between nanoparticles and glass is slow and the reaction time is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing water-repellent and oleophobic self-cleaning glass includes the following steps: firstly, the nano-silica hydrosol and the hydrothermally prepared nano-anatase titanium dioxide sol are mixed according to a mass ratio of 5:1, and the nano-anatase titanium dioxide particles The diameter of the mixed sol is 5nm, the pH of the mixed sol is at 9, and the mixed sol is allowed to stand still to form a mixed sol; spray the mixed sol on the surface of the glass with a film thickness of 120nm. After drying, use a 670℃ tempering furnace for heat treatment. Surface; secondly, heptafluorodecyl trimethoxysilane and siloxane tetraethyl orthosilicate are dissolved in ethanol solvent at a molar ratio of 1:2, and the pH is adjusted to 3 with inorganic acid, and it is allowed to stand for conversion to form fluorine Silica sol; at the same time, the fluorine-silicon nano sol is coated on the porous structure membrane surface by a knife coating process, and the porous ...

Embodiment 2

[0023] A method for preparing water-repellent and oleophobic self-cleaning glass includes the following steps: firstly, tetraethylorthosilicate is hydrolyzed and condensed to form a nano-silica alcohol sol, and the nano-silica alcohol sol is combined with a hydrothermally prepared nano-dioxide The tin-titanium sol is mixed in ethanol solvent according to the mass ratio of 8:1, the particle size of nano-titanium dioxide is 7.5nm, the pH of the solution is 3.5, and it is allowed to stand to transform into a mixed sol. The mixed sol is sprayed on the glass surface with a spraying film thickness of 120nm After drying, heat treatment in a tempering furnace at 670℃. After heat treatment, the glass is cooled to form a porous structure film surface; secondly, heptafluorodecyltrimethoxysilane and siloxane tetraethylorthosilicate are dissolved in a molar ratio of 1:3.5 In ethanol solvent, use inorganic acid to adjust the PH at 4, stand for 11h to form fluorosilica sol; at the same time, u...

Embodiment 3

[0025] A method for preparing water-repellent and oleophobic self-cleaning glass includes the following steps: firstly, tetraethylorthosilicate is hydrolyzed and condensed to form nano-silica alcohol sol, and the nano-silica alcohol sol is combined with the nano trioxide prepared by hydrothermal The aluminum sol is mixed in ethanol solvent according to the mass ratio of 5:1, the particle size of nano titanium dioxide is 10nm, the pH of the solution is 3.5, and it is allowed to stand to form a mixed sol. The mixed sol is sprayed on the glass surface with a spraying film thickness of 120nm and dried. After heat treatment in a tempering furnace at 670℃, after heat treatment, the glass is cooled to form a porous structure membrane surface; secondly, tridecafluorooctyltriethoxysilane, heptafluorodecyltrimethoxysilane and siloxane tetraethyl orthosilicate Ester mole ratio is 1:5 dissolved in ethanol solvent, adjust the pH to 3 with inorganic acid, stand for 10h to form fluorosilica so...

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Abstract

The invention discloses a preparation method of hydrophobic and oleophobic self-cleaning glass. The method comprises the following steps: mixing silica sol with metal oxide crystal sol to form mixed sol, coating the surface of glass with the mixed sol, and carrying out heat treatment on the surface of the glass to form a porous structure membrane surface; mixing fluorosilicone with siloxane, hydrolyzing, ageing, and adjusting the pH value of the obtained fluorosilicone and siloxane solution by using an inorganic acid to form fluorine-silicon nano-sol; and coating the porous structure membrane surface with the fluorine-silicon nano-sol through a coating technology, filling and modifying the obtained porous structure membrane to form a coating layer, and carrying out drying solidification on the coating layer to form a hydrophobic and oleophobic composite membrane surface. The hydrophobic and oleophobic self-cleaning glass product prepared in the invention has the advantages of good adhesion, large membrane surface hardness and friction resistance, and is suitable for being used as building glass and household glass which are convenient to wipe and clean.

Description

Invention field [0001] The invention belongs to the technical field of coating glass manufacturing, and specifically relates to a water- and oil-repellent self-cleaning glass and a preparation method thereof. Background technique [0002] Self-cleaning glass is a kind of functional glass, which is coated with a layer of functional film material on the surface of the glass to make it difficult for contaminants to adhere to the surface of the glass and be washed away by water. Self-cleaning glass is divided into hydrophilic and hydrophobic self-cleaning glass. When hydrophilic self-cleaning glass, it means that the hydrophilic angle is less than 10°. Water can spread on the glass surface to form a water film and take away the dust accumulated on the glass surface. At present, the most extensive researches are the hydrophilic film of anatase titanium dioxide film and the composite film of anatase titanium dioxide and silicon dioxide, such as invention patents 200910109067.8 and 2012...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/42
Inventor 高升魏礼杰王昕高尔明
Owner 浙江鼎昇新材料科技股份有限公司