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Method for manufacturing high-refractive index TiO2/organic silicon hybrid coating

A technology with high refractive index and manufacturing method, applied in the field of organic-inorganic hybrid coating materials, can solve the problems of increasing the difference of the refractive index of titanium dioxide, low refractive index of organic silicon, light scattering of nano-hybrid coating, etc.

Inactive Publication Date: 2011-01-05
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently reported TiO prepared by Que 2 / Methyltrimethoxysilane and TiO 2 / KH560 hybrid coating system, the refractive index of the obtained hybrid coating can be adjusted, but the organic silicon used in it has a low refractive index, which increases the difference between the refractive index of titanium dioxide and, to a certain extent, will cause nano-hybrid Light Scattering Phenomena of Chemical Coatings

Method used

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  • Method for manufacturing high-refractive index TiO2/organic silicon hybrid coating
  • Method for manufacturing high-refractive index TiO2/organic silicon hybrid coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 10g of absolute ethanol, 4.5g of deionized water and 0.1g of concentrated hydrochloric acid in a three-necked flask, magnetically stir and heat to 70°C, slowly add 7.3g of diphenyldimethoxysilane dropwise, and continue to stir and react for 15min, Then 16.5g of KH560 was slowly added dropwise, kept at 70°C and stirred for 2h to obtain a colorless and transparent organosilicon sol (the product was distilled under reduced pressure, and its refractive index was 1.49 measured by Abbe refractometer), stopped heating, and used Add 0.5g of deionized water and 5g of absolute ethanol to the mixed solution of residual heat first, then add 14.7g of butyl titanate dropwise, stir while dripping, and react for 30 hours to obtain transparent nano TiO 2 / Organic silicon hybrid sol. The film was prepared by spin coating (2000rps, 15s), and cured at 100°C for 1h. The refractive index of the coating was 1.54 and the light transmittance was 98%.

Embodiment 2

[0024] Put 10g of absolute ethanol, 4.5g of deionized water and 0.1g of concentrated hydrochloric acid in a three-necked flask, magnetically stir and heat to 70°C, slowly add 8.2g of diphenyldiethoxysilane dropwise, and continue to stir and react for 15min, Then 16.5g of KH560 was slowly added dropwise, kept at 70°C and stirred for 2h to obtain a colorless and transparent organosilicon sol (the product was distilled under reduced pressure, and its refractive index was 1.49 measured by Abbe refractometer), stopped heating, and used Add 0.5g of deionized water and 5g of absolute ethanol to the mixed solution of residual heat, and then add 14.7g of butyl titanate dropwise, stir while adding dropwise, and react for 30 hours to obtain transparent TiO 2 / Organic silicon hybrid sol. The film was prepared by spin coating (2000rps, 15s), and cured at 100°C for 1h. The refractive index of the coating was 1.54 and the light transmittance was 98%.

Embodiment 3

[0026] Put 10g of absolute ethanol, 4.5g of deionized water and 0.2g of acetic acid in a three-necked flask, magnetically stir and heat to 70°C, slowly add 7.3g of diphenyldimethoxysilane dropwise, continue to stir and react for 15min, then Slowly add 16.5g of KH560 dropwise, keep stirring at 70℃ for 2h to obtain a colorless and transparent organosilicon sol, stop heating, use residual heat to first drop 4.3g of deionized water and 15g of absolute ethanol mixed solution, and then dropwise add 80.3g Butyl titanate, stir while dripping, react for 30 hours to obtain transparent TiO 2 / Organic silicon hybrid sol. The film was prepared by spin coating (2000rps, 15s), and cured at 100°C for 1h. The refractive index of the coating was 1.65 and the light transmittance was 94%.

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Abstract

The invention provides a method for manufacturing a high-refractive index TiO2 / organic silicon hybrid coating, which is mainly characterized by comprising the following steps: dripping a phenyl-containing organic silicon monomer into mixed solution of absolute ethanol, deionized water and an inorganic acid; heating and stirring for a certain time period; adding gamma-glycidyloxypropyltrimethoxysilane to perform a cross-linking reaction to obtain high-refractive index organic silicon sol; stopping heating, dripping mixed solution of absolute ethanol and deionized water by using afterheat; adding a titanium alkoxide to obtain netty nano composite organic silicon hybrid sol; and preparing the hybrid coating by a spinning process. The coating, after being solidified with heat, has the characteristics of high refractive index, high light transmittance, high-temperature resistance and high bonding strength. The refractive index of the coating increases with the increase of TiO2 content; in addition, the introduction of the phenyl improves the refractive index of the organic silicon sol and reduces the scattering of the coating. The method has the characteristics of simple and feasible preparation process and large scale production.

Description

Technical field [0001] The present invention relates to high refractive index TiO 2 / Organic silicon hybrid coating manufacturing method, which can be used to prepare high refractive index TiO 2 / Organic silicon hybrid coating belongs to the field of organic-inorganic hybrid coating materials. Background technique [0002] Organic polymers have the advantages of low density, good viscoelasticity, high toughness, and good processability. Inorganic materials have the advantages of high hardness, high elastic modulus and strength, better light transmission performance, high refractive index and so on. Organic-inorganic hybrid materials can have the advantages of the above two materials, are easy to process and shape, and can continuously adjust the refractive index. Combining inorganic particles and polymers can construct composite materials with high refractive index. At present, high refractive index materials have shown attractive application prospects in sensors, tunable lasers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08K3/22C08J5/18C08G77/18
Inventor 罗仲宽王芳青双桂曹慧群周莉邱琦
Owner SHENZHEN UNIV
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