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High-refractive-index wear-resistant hardened coating composition and preparation method of hardened film thereof

A technology of mixture and slurry, applied in the direction of coating, etc., can solve the problems of affecting the strength and light transmittance of composite materials, high stability of phosphoric acid modifiers, difficult to remove modifiers, etc., to achieve a wide range of raw materials and easy availability , broaden the scope of use, the effect of high solid content

Inactive Publication Date: 2020-01-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN109971413A describes the use of phosphoric acid organic acid modifiers to modify the surface of zirconium dioxide to disperse them in organic solvents such as toluene and chloroform. High stability, difficult to remove excess modifier
In patent CN201580047465.5, silane coupling agent and 1,2-hydroxystearic acid are used to modify the surface of zirconium dioxide, so that it can be dispersed in organic solvents other than methanol or ethanol, but the modified nanoparticles The diameter distribution is 1-20 nanometers, and the particle size is uneven. If it is used to prepare composite materials, it is easy to have uneven distribution, which will affect the strength and light transmittance of composite materials.

Method used

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  • High-refractive-index wear-resistant hardened coating composition and preparation method of hardened film thereof
  • High-refractive-index wear-resistant hardened coating composition and preparation method of hardened film thereof
  • High-refractive-index wear-resistant hardened coating composition and preparation method of hardened film thereof

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Experimental program
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Effect test

Embodiment 1

[0040] 1) Weighing 10 grams of basic zirconium carbonate and dissolving excess alkali in water for hydrothermal reaction, after the reaction is completed, filter and wash the filter cake until the pH is about 10;

[0041] 2) Take all the filter cake, add 2 ml of methyl acrylate and 20 ml of water into the bottle, stir and react at 60 degrees Celsius for 12 hours, filter and wash the filter cake twice after the reaction is completed;

[0042] 3) drying the filter cake for 10 hours under an environment of 70 degrees Celsius to obtain zirconia powder;

[0043] 4) Add the powder into tetrahydrofuran to form a dispersion with a solid content of 10 wt%, add 10 microliters of N-B-(aminoethyl)-Γ-aminopropylmethyldimethoxysilane, and add a magnet at the bottom of the bottle Finally, put it on a magnetic stirrer, stir and react at a speed of 100 rpm for 4 hours, and obtain a high-dispersion organic phase nano-zirconia particle dispersion of the product. Wherein the particle size of the...

Embodiment 2

[0046] 1) Weighing 10 grams of basic zirconium carbonate and dissolving excess alkali in water for hydrothermal reaction, after the reaction is completed, filter and wash the filter cake until the pH is about 10;

[0047] 2) Take all the filter cake, add 2 ml of methyl methacrylate and 30 ml of water into the bottle, stir and react at 60 degrees Celsius for 24 hours, filter and wash the filter cake twice after the reaction is completed;

[0048] 3) drying the filter cake for 10 hours under an environment of 70 degrees Celsius to obtain zirconia powder;

[0049] 4) Add the powder into tetrahydrofuran to make a dispersion with a solid content of 10wt%, add 10 microliters of Γ-aminopropyltriethoxysilane, add magnets to the bottom of the bottle and place it on a magnetic stirrer, at 100 rpm The reaction was stirred at a speed of 1 minute for 1 hour to obtain a high-dispersion organic phase nano-zirconia particle dispersion. The particle size of the nanoparticles under the electro...

Embodiment 3

[0052] 1) Weighing 20 grams of zirconium oxychloride hydrate and dissolving excess alkali in water for hydrothermal reaction, after the reaction is completed, filter and wash the filter cake until the pH is about 8;

[0053] 2) Take all the filter cake, add 1 ml of methacrylic acid and 40 ml of water into the bottle, stir and react at 70 degrees Celsius for 4 hours, filter and wash the filter cake twice after the reaction is completed;

[0054] 3) drying the filter cake for 8 hours under an environment of 80 degrees Celsius to obtain zirconia powder;

[0055] 4) Add the powder into toluene to make a dispersion with a solid content of 10wt%, add 10 microliters of N-B-(aminoethyl)-Γ-aminopropylmethyldimethoxysilane, and add a magnet at the bottom of the bottle Finally, place it on a magnetic stirrer, stir and react at a speed of 120 rpm for 4 hours, and obtain a high-dispersion organic phase nano-zirconia particle dispersion of the product. Wherein the particle size of the nano...

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Abstract

The invention discloses a high-refractive-index wear-resistant hardened coating composition and a preparation method of a hardened film thereof. The preparation method comprises the following steps: firstly, preparing nano zirconium oxide by utilizing a hydrothermal method and the like, and then connecting a hydrophobic group to the surface of zirconium oxide by virtue of a double modification method of olefine acid, olefine acid ester and a silane coupling agent so as to disperse the zirconium oxide into an organic solvent, and the organic-phase nano zirconium oxide particle dispersion with good dispersity is obtained. Zirconium oxide nanoparticles and light-cured resin are compounded to obtain the composite material with excellent performance of organic and inorganic materials, and the composite material is stable in property, high in hardness, high in wear resistance, good in water resistance and corrosion resistance and high in refractive index, and can be applied to the fields ofprotection of electronic products and electronic components or coating of furniture and artware and the like.

Description

technical field [0001] The invention relates to the technical field of hardened films, in particular to a hardened coating composition with high refractive index, high transparency and high wear resistance and a preparation method for the hardened film. Background technique [0002] With the advancement of electronic technology, transparent hardening film has been widely used in various fields such as smart phones, computer LCD screens, automotive touch screens, industrial touch screens, and home appliance control screens. Its core function is to provide a scratch-resistant layer on the surface A protective layer to prevent the screen or panel from being damaged during normal use and affecting the user experience. With the continuous improvement of user experience, the requirements for hardened film are also getting higher and higher. Hardened film is usually made of tempered glass. But glass is poorly flexible, unable to bend, and has low production efficiency, which has ...

Claims

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Application Information

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IPC IPC(8): C09D7/62
CPCC08K9/04C08K9/06C08K2003/2244C08K2201/003C08K2201/011C09D7/62
Inventor 蒲源唐睿婕王丹何相磊
Owner BEIJING UNIV OF CHEM TECH
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