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Preparation method for transparent substrate of brightness enhancement film

A technology of transparent substrate and brightening film, applied in the field of substrate, can solve the problem of raw material cost, thermal stability, tensile strength, yellowing resistance, dimensional variability and adhesion, which need to be improved, the impact of production cost fluctuations is large, and the threat to human health. and other problems, to achieve the effect of high elasticity, small curling degree and reducing damage

Active Publication Date: 2019-10-18
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above materials were selected mainly because of their high visible light transmittance, but still need to be improved in terms of raw material cost, thermal stability, tensile strength, yellowing resistance, dimensional variability and adhesion
In addition, these materials are all chemical plastics, the production cost is greatly affected by the fluctuation of crude oil price, and the market stability is poor
It is particularly noteworthy that these materials exist in the form of micron-scale films or microspheres, which are prone to ecological and environmental problems such as "microplastics" and "white pollution", and even directly threaten human health. Excellent, economical and environmentally friendly new material for optical diffusion film

Method used

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  • Preparation method for transparent substrate of brightness enhancement film
  • Preparation method for transparent substrate of brightness enhancement film

Examples

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preparation example Construction

[0042] The application provides a method for preparing a transparent base of a light enhancing film, which comprises the following steps:

[0043] 1) Boil O. sinensis with 5% NaOH and reflux for 2 days, then soak and stir in 2mol / L nitric acid for 2 days, and finally reflux with absolute ethanol at 30-50°C for 5 hours, filter, and wash the filter residue with deionized water to neutral;

[0044] 2) Add 0.1-10.0% (g / mL) azobisisobutyronitrile and 1.0-5.0% (g / mL) cyclohexane peroxide to 5.0-15.0% (g / mL) disodium edetate aqueous solution For ketones, transfer the filter residue to the above mixed solution at a material-to-liquid ratio of 1:20 (g / mL), adjust the pH of the solution to 10-12 and seal it, and heat it to 40-60°C with infrared heating at a speed of 60-180r / min. Stir for 12 hours, filter the product, and wash the filter residue with deionized water until neutral;

[0045] 3) Transfer the filter residue into an acetic acid solution with a pH of 3 according to the ratio...

Embodiment 1

[0051] This preferred embodiment provides a method for preparing a transparent base of a light enhancing film, which includes the following steps:

[0052] 1) The covered wings of O. chinensis are subjected to alkali boiling and reflux, acid leaching and stirring, and ethanol heating and reflux in sequence, and are filtered, and the filter residue is washed with deionized water until neutral;

[0053] 2) Add azobisisobutyronitrile and cyclohexanone peroxide to the aqueous solution of disodium edetate, transfer the filter residue to the above mixed solution, adjust the pH value of the solution to 11 and seal it, heat and continuously stir, and filter the product, The filter residue was washed with deionized water until neutral;

[0054] 3) The filter residue is transferred to the acetic acid solution, and the mixture is ground and centrifuged to get the supernatant;

[0055] 4) Dilute the supernatant 10 times with deionized water, evaporate part of the water, and make a hydrog...

Embodiment 2

[0073] This preferred embodiment also provides a transparent substrate for a brightness enhancement film, which is characterized in that the transparent substrate for a brightness enhancement film is prepared by the method described in Example 1 above.

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Abstract

The invention relates to a substrate, and in particular relates to a preparation method for the transparent substrate of a brightness enhancement film. The method comprises the following steps: 1) performing alkali boiling reflux on tegmina of oxya chinensis, performing acid immersion under stirring, performing reflux by using ethanol under heating, performing filtration, and washing the filter residues by using deionized water to neutrality; 2) transferring the filter residues to an ethylenediaminetetraacetic acid disodium salt aqueous solution of azodiisobutyronitrile and cyclohexanone peroxide, adjusting the pH of the solution, performing sealing, performing heating, performing continuous stirring, performing filtration on the products, and washing the filter residues by using deionizedwater to neutrality; 3) transferring the filter residues to an acetic acid solution, performing grinding, performing centrifugation, and taking the supernatant liquid; and 4) diluting the supernatantliquid by using deionized water, performing evaporation to remove a part of water to prepare the hydrogel, that is, the transparent substrate. According to the method provided by the invention, the transparent substrate of the brightness enhancement film prepared by using the tegmina of the agricultural pest oxya chinensis as raw materials through the specific physical and chemical method has better elasticity and visible light transmittance and excellent tolerance in special environments, impact damage of an organic flexible screen containing the transparent substrate of the brightness enhancement film can be reduced, and a better brightness enhancement effect can be obtained.

Description

technical field [0001] The invention relates to a substrate, in particular to a method for preparing a transparent substrate of a light enhancing film. Background technique [0002] Brightening film is an optical diffusion film, which is an important component of organic flexible screens. The traditional raw materials for its preparation are chemical raw materials, which are expensive and unsustainable. In view of the fact that flexible screen related technology is a new technology, it is expected to be applied to high-tech products such as mobile phones, LCD TVs, computers, automobiles and wearable smart devices on a large scale. The technical research and development of related products has attractive market development prospects. [0003] The preparation materials of traditional optical diffusion films such as enhancement films mainly include polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polybutyl methacrylate (PBMA) and polyurethane (PU). The above-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/075C08L5/08C08B37/08
CPCC08J5/18C08J3/075C08B37/003C08J2305/08
Inventor 刘俊稚葛亚明杨家顺韩厚峰
Owner ZHEJIANG OCEAN UNIV
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