Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating

A technology of hydrophilic modification and wear-resistant coating, which is applied in the direction of coating, etc., and can solve the problems of reduced surface hydrophilicity and anti-fog performance

Inactive Publication Date: 2015-06-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of inorganic sol can indeed improve the wear resistance of the material, but the surface hydrophilicity and anti-fog properties of the material also decrease

Method used

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  • Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating
  • Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating
  • Hydrophilic modified silica sol and application thereof in preparation for hydrophilic anti-fog wear-resistant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 5g of propyltriethoxysilane isocyanate, 5g of polyethylene glycol 200, 0.01g of dibutyltin dilaurate and 100mL of tetrahydrofuran into a 150mL three-necked bottle, and stir for 5 hours. The solvent was distilled off under reduced pressure to obtain a polyethylene glycol 200 modified silane coupling agent monomer.

[0027] At room temperature, dissolve 3g of silane coupling agent monomer modified by polyethylene glycol 200, 1g of tetraethyl orthosilicate, 0.01g of acetic acid and 0.1g of water in 10mL of ethylene glycol monoethyl ether, stir for 24 hours, and then let stand After 72 hours, a hydrophilic modified silica sol solution was obtained, with a mass of 13.4 g. The mass ratio of the prepared hydrophilic modified silica sol A to B is 3:1.

[0028] The infrared spectrogram of the hydrophilic modified silica sol prepared in embodiment 1 is shown in figure 1 , at 1720cm -1 The characteristic peak of the ester group appeared at 2885cm -1 The characteristic peak...

Embodiment 2

[0034] Add 5g of propyltriethoxysilane isocyanate, 5g of polyethylene glycol 800, 0.01g of dibutyltin dilaurate and 100mL of tetrahydrofuran into a 150mL three-necked bottle, and stir for 5 hours. The solvent was distilled off under reduced pressure to obtain a polyethylene glycol 800-modified silane coupling agent monomer.

[0035] At room temperature, dissolve 3 g of polyethylene glycol 800 modified silane coupling agent monomer, 1 g of tetraethyl orthosilicate, 0.01 g of acetic acid and 0.1 g of water in 10 mL of ethylene glycol monoethyl ether, and stir for 24 hours. After the stirring was stopped, the system was allowed to stand and age for 72 hours to obtain a hydrophilic modified silica sol solution with a mass of 13.4 g. The mass ratio of the hydrophilic modified silica sol A and B prepared in Example 2 is 3:1.

[0036] The infrared spectrogram of the hydrophilic modified silica sol prepared in embodiment 2 is shown in figure 2 , at 1720cm -1 The characteristic pea...

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Abstract

The invention discloses a hydrophilic modified silica sol and application thereof in preparation for a hydrophilic anti-fog wear-resistant coating, and belongs to the technical field of hydrophilic anti-fog wear-resistant coatings. The hydrophilic modified silica sol is the random hydrolysate of a PEG-modified silane coupling agent and tetraethyl orthosilicate or tetramethyl orthosilicate, and is obtained by adding the PEG-modified silane coupling agent and tetraethyl orthosilicate or tetramethyl orthosilicate in an organic solvent in a mass ratio of (1-10):1 at a room temperature, wherein the solid content of the system is 5-30%; and then adding water occupying 0.1-3% of a total monomer mass and acetic acid occupying 0.1-3% of the total monomer mass, stirring for 10-24 hours, and then ageing for 10-72 hours. The application of the hydrophilic modified silica sol disclosed by the invention in preparation for the hydrophilic anti-fog wear-resistant coating specifically comprises the steps of adding the hydrophilic modified silica sol in an organic anti-fog coating, and stirring to obtain a mixed coating with viscosity of 100-700cps.

Description

technical field [0001] The invention belongs to the technical field of hydrophilic anti-fog and wear-resistant coatings, in particular to a hydrophilic modified silica sol which can increase the wear-resistant strength of the coating film and effectively increase the hydrophilicity of the surface and its application in the preparation of hydrophilic and wear-resistant anti-fog application in coatings. Background technique [0002] In recent years, with the rapid development of the research and application of organic transparent optical materials, they are playing an increasingly important role in national production and life. However, the shortcomings of organic transparent optical materials such as fogging and wear resistance in high-humidity environments have caused a lot of inconvenience to practical applications, and even endangered people's lives and property. Since the 1930s and 1940s, people have paid attention to the anti-fog performance of organic transparent optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/26C08G77/06C09D7/12C09D133/14
Inventor 崔占臣李尧史作森
Owner JILIN UNIV
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