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Method for preparing waterproof and antifogging surface modified glass

A surface modification and anti-fog technology, applied in the field of waterproof and anti-fog glass, can solve the problems of poor adhesion, uniformity and performance stability of self-assembled molecular films, and achieve the advantages of easy industrialization of products, improved weather resistance, and improved hydrophobicity. Effect

Inactive Publication Date: 2014-12-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor adhesion, uniformity and performance stability of self-assembled molecular films

Method used

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  • Method for preparing waterproof and antifogging surface modified glass
  • Method for preparing waterproof and antifogging surface modified glass
  • Method for preparing waterproof and antifogging surface modified glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Synthesis of silicon-containing photoinitiator: the molar ratio of isocyanate-containing silane coupling agent and 2-hydroxy-4-(2-hydroxyethoxy)-2-methylpropiophenone is 2:1 The reaction was carried out in dehydrated ethyl acetate, using dibutyltin dilaurate DBTDL as a catalyst, and the added amount of the catalyst accounted for 0.05% of the mass fraction of the reactant. The reaction was carried out for 4 hours to obtain a silicon-containing photoinitiator. The product is tested by infrared.

[0031] (2) Hydroxylation of the glass surface: use a glass slide, use deionized water, ethanol, and acetone respectively to sonicate for 10 minutes, then, 98% concentrated sulfuric acid by mass percentage: 30% hydrogen peroxide by volume ratio Soak the slides in the washing solution prepared at 7:3 for 10 hours to remove the insoluble organic matter on the surface of the slides, and at the same time form hydroxyl-rich slides.

[0032] (3) Chemically bond the silicon-containing ph...

Embodiment 2

[0037] (1) Synthesis of silicon-containing photoinitiator: the molar ratio of isocyanate-containing silane coupling agent and 2-hydroxy-4-(2-hydroxyethoxy)-2-methylpropiophenone is 3:1 The reaction was carried out in dehydrated ethyl acetate, using dibutyltin dilaurate DBTDL as a catalyst, the added amount of the catalyst accounted for 0.1% of the mass fraction of the reactant, and reacted for 6 hours to obtain a silicon-containing photoinitiator. The product is tested by infrared.

[0038] (2) Hydroxylation of the glass surface: use a glass slide, use deionized water, ethanol, and acetone respectively to ultrasonic for 20 minutes, then, 98% by mass concentrated sulfuric acid: 30% by mass hydrogen peroxide according to the volume ratio The 7:3 washing solution soaks the slides for 17 hours to remove the insoluble organic matter on the surface of the slides and at the same time form hydroxyl-rich slides.

[0039] (3) Chemically bond the silicon-containing photoinitiator in step (1)...

Embodiment 3

[0044] (1) Synthesis of silicon-containing photoinitiator: the molar ratio of isocyanate-containing silane coupling agent and 2-hydroxy-4-(2-hydroxyethoxy)-2-methylpropiophenone is 4:1 It is reacted in dehydrated ethyl acetate, using dibutyl tin dilaurate DBTDL as a catalyst, and the catalyst is added in an amount of 0.2% of the mass fraction of the reactant. The reaction is conducted for 8 hours to obtain a silicon-containing photoinitiator. The product is tested by infrared.

[0045] (2) Hydroxylation of the glass surface: use a glass slide, use deionized water, ethanol, and acetone respectively to sonicate for 30 minutes, then, 98% concentrated sulfuric acid with a mass percentage concentration of 98%: hydrogen peroxide with a mass percentage concentration of 30% according to the volume ratio The washing solution prepared at 7:3 soaks the slides for 24 hours to remove the insoluble organic matter on the surface of the slides, and at the same time form a hydroxylated glass slid...

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Abstract

The invention relates to a method for preparing waterproof and antifogging surface modified glass. The method comprises the following steps of: performing ultraviolet (UV) photo-curing treatment on the modified glass surface by using a photo-curing monomer containing a special functional group to obtain modified waterproof and antifogging glass; preparing silicon-containing photoinitiator is prepared by reacting a silane coupling agent containing isocyanic acid with a photoinitiator 2-hydroxyl-4-(2-hydroxyethoxy)-2-methyl propiophenone (the photoinitiator 2959); and grafting the silicon-containing photoinitiator on the glass surface by hydrolysis reaction to form a chemically-bonded single molecular layer. The product has the characteristics that weather resistance and hydrophobicity of the glass are improved and the binding property between two interfaces is improved by chemical bonding; photo-curing characteristics that the product is environment-friendly, efficient and easy to industrialize are fully utilized; and a way for modification technology development in the future is provided, and organic micromolecules and macromolecules containing special functional groups are grafted on the glass surface.

Description

Technical field [0001] The invention relates to the preparation of water-proof and anti-fog glass by grafting a photoinitiator onto the glass surface by means of chemical bonding. Background technique [0002] Glass has good see-through and light transmission properties, and has high transmittance to near-infrared heat rays in sunlight, but it effectively blocks far-infrared long-wave heat rays reflected by visible light refracted to indoor walls, floors, furniture, and fabrics. , So it can produce obvious "heating effect". Under normal circumstances, it has strong resistance to acid, alkali, salt and chemical kit gases. Glass is widely used in the production and life of construction engineering, home design and other fields, especially in the application of doors, windows and windshields. Because of its long-term contact with the environment, improving the waterproof, anti-fog and self-cleaning properties of the glass surface has become a research hotspot. [0003] There are ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/30
Inventor 聂俊曹宝学马贵平
Owner BEIJING UNIV OF CHEM TECH
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