Wear-resistant flexible diffusion film and preparation process thereof

A preparation process and diffusion film technology, applied in the field of optical films, can solve problems such as difficulty, light efficiency, light diffusivity, color rendering constraints, etc., to prevent drift, facilitate flexibility, and improve wear resistance.

Inactive Publication Date: 2021-12-03
YILIKIM NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, light efficiency, light diffusion, and color rendering are mutually restricted, and it is difficult to achieve high light efficiency and high diffusion

Method used

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  • Wear-resistant flexible diffusion film and preparation process thereof
  • Wear-resistant flexible diffusion film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of diffusion particles:

[0042] Mix tetraethyl orthosilicate and ammonia water, add absolute ethanol, stir at room temperature, react for 5 hours, centrifuge, take the precipitate and wash it 3 times with ethanol, dry to obtain silica microspheres;

[0043] Take silicon dioxide microspheres and use a metal vapor vacuum arc ion implanter to implant zinc ions. The process is: accelerating voltage 27kV, implantation volume 1.2×10 17 / cm 2 , zinc ion energy 87keV, beam current density 2.0μA / cm 2 , annealing, the process is: oxygen atmosphere, annealing temperature 600 ° C, time 1h, prepared modified silica microspheres;

[0044] Take the modified silica microspheres and add deionized water, ultrasonically disperse for 50 minutes, add urea and sodium tartrate, stir, add vinyltrimethoxysilane, adjust the pH of the system to 4, stir for 50 minutes, and react at a constant temperature of 175°C for 3 hours. Cool, centrifuge, wash the precipitate with water th...

Embodiment 2

[0055] (1) Preparation of diffusion particles:

[0056] Mix tetraethyl orthosilicate and ammonia water, add absolute ethanol, stir at room temperature, react for 5.5 hours, centrifuge, take the precipitate and wash it 4 times with ethanol, dry to obtain silica microspheres;

[0057] Take silicon dioxide microspheres and use a metal vapor vacuum arc ion implanter to implant zinc ions. The process is: accelerating voltage 28kV, implantation volume 1.5×10 17 / cm 2 , zinc ion energy 107keV, beam current density 4.5μA / cm 2 , annealing, the process is: oxygen atmosphere, annealing temperature 800 ℃, time 4h, prepared modified silica microspheres;

[0058] Take the modified silica microspheres and add deionized water, ultrasonically disperse for 65 minutes, add urea and sodium tartrate, stir, add vinyltrimethoxysilane, adjust the pH of the system to 3.5, stir for 65 minutes, and react at a constant temperature of 180°C for 3.5 hours , cooled, centrifuged, washed the precipitate wi...

Embodiment 3

[0069] (1) Preparation of diffusion particles:

[0070] Mix tetraethyl orthosilicate and ammonia water, add absolute ethanol, stir at room temperature, react for 6 hours, centrifuge, take the precipitate and wash it 5 times with ethanol, dry to obtain silica microspheres;

[0071] Take silicon dioxide microspheres and use a metal vapor vacuum arc ion implanter to implant zinc ions. The process is: accelerating voltage 30kV, implantation volume 1.8×10 17 / cm 2 , Zinc ion energy 140keV, beam current density 7.0μA / cm 2 , annealing, the process is: oxygen atmosphere, annealing temperature 900 ° C, time 2h, prepared modified silica microspheres;

[0072] Take the modified silica microspheres and add deionized water, ultrasonically disperse for 80 minutes, add urea and sodium tartrate, stir, add vinyltrimethoxysilane, adjust the pH of the system to 3, stir for 80 minutes, and react at a constant temperature of 185°C for 4 hours. Cool, centrifuge, wash the precipitate with water 5...

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Abstract

The invention discloses a wear-resistant flexible diffusion film and a preparation process thereof. The preparation process comprises the following steps: (1) preparing diffusion particles: preparing silicon dioxide microspheres from a silicon source and ammonia water; injecting zinc ions to prepare modified silicon dioxide microspheres; adding urea, sodium tartrate and vinyl trimethoxy silane, and reacting; adding polyethylene and an initiator, and reacting; (2) preparing the film body: reacting hydroxyl-terminated polybutadiene with glyoxylic acid, and reacting with m-phenylenediamine to prepare modified polybutadiene; reacting with diffusion particles and maleic anhydride, coating and stretching; and (3) preparing the diffusion film: coating the surface of the diffusion film body with the coating, compounding the coating surface with the base film, and curing. According to the arrangement of the diffusion film and the preparation process thereof, the layer structure of the base film and the diffusion film body is formed, the base film and the diffusion film body are bonded and filled through the coating, relative refraction exists between every two films, light refraction can be effectively increased, backscattering can be effectively reduced, and the transmittance and haze of the prepared diffusion film are improved.

Description

technical field [0001] The invention relates to the technical field of optical films, in particular to a wear-resistant flexible diffusion film and a preparation process thereof. Background technique [0002] With the popularization of displays such as LEDs and PCs, people have higher and higher requirements on the light efficiency, light diffusion and color rendering of displays. However, light efficiency, light diffusion, and color rendering are mutually restricted, and it is difficult to achieve high light efficiency and high diffusion. For conventional displays, when other materials and properties are determined, the performance of the diffusion film determines the light efficiency and diffusivity of the display. . Diffusion membrane materials are mainly divided into two categories according to the difference in structure and diffusion principle: doped ion type and surface microstructure type. The common method is doped ion type, but light transmittance and diffusivity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/12C08J7/04C08L51/00C08K9/04C08K9/06C08K7/18C09D175/14G02B5/02
CPCC08J5/128C08J7/0427C09D175/14C08K9/04C08K9/06C08K7/18G02B5/0268G02B5/0242C08J2351/00C08J2475/14C08L51/003
Inventor 向一民安太勇张杰海陈志强
Owner YILIKIM NEW MATERIALS CO LTD
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