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Preparation method of organic modified barium titanate nano particle and preparation method of quantum dot optical film

A nanoparticle and barium titanate technology, which is applied in nano optics, nanotechnology, nanotechnology, etc., can solve the problems that affect the uniformity of quantum dot optical film, easy aggregation, precipitation, etc., and achieve good scattering ability and high refraction rate, the effect of reducing dosage

Active Publication Date: 2020-07-03
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the barium titanate nanoparticles synthesized by the traditional method are not modified with organic matter, and are easy to precipitate in organic solvents, resulting in easy aggregation in acrylic glue, which affects the luminous uniformity of the quantum dot optical film.

Method used

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  • Preparation method of organic modified barium titanate nano particle and preparation method of quantum dot optical film
  • Preparation method of organic modified barium titanate nano particle and preparation method of quantum dot optical film
  • Preparation method of organic modified barium titanate nano particle and preparation method of quantum dot optical film

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preparation example Construction

[0030] like figure 1 As shown, the present application provides a method for preparing organically modified barium titanate nanoparticles, including the following steps S1)-S6).

[0031] S1) adding barium hydroxide octahydrate into deionized water and stirring evenly to obtain a barium hydroxide solution.

[0032] S2) adding tetrabutyl titanate into ethanol solvent, stirring evenly to obtain tetrabutyl titanate solution.

[0033] S3) adding the barium hydroxide solution into the tetrabutyl titanate solution to obtain a first mixed solution, the molar ratio of titanium ions to barium ions is 1:1.

[0034] S4) Adding sodium hydroxide solution and organic matter into the first mixed solution to obtain a second mixed solution, the organic matter contains carbon-hydrogen bonds and carbon-oxygen bonds. In this embodiment, the carbon-oxygen bond of the organic matter may be a carbon-oxygen single bond or a carbon-oxygen double bond. The organic matter is acrylic acid series, COOH-...

Embodiment 1

[0044] This embodiment provides a method for preparing organically modified barium titanate nanoparticles, including the following steps S11)-S18). Wherein, the organic matter is acrylic acid series, and the acrylic acid series includes any one of methacrylic acid and sodium polymethacrylate. This embodiment takes methacrylic acid as an example to describe in detail.

[0045] S11) Add 200.0 mg of barium hydroxide octahydrate into 15 mL of deionized water, and stir evenly to obtain a barium hydroxide solution. Specifically, the barium hydroxide octahydrate is added into ionized water at a temperature of 50-100° C., and stirred evenly to obtain a barium hydroxide solution.

[0046] S12) Add 215.8 mg of tetrabutyl titanate into 15 mL of ethanol solvent, and stir evenly to obtain a tetrabutyl titanate solution. In this embodiment, adding the ethanol solvent in order to prevent the tetrabutyl titanate from being directly hydrolyzed in the air requires operation in a glove box with...

Embodiment 2

[0058] This example provides a method for preparing organically modified barium titanate nanoparticles and a method for preparing a quantum dot optical film, including most of the technical solutions in Example 1. The difference is that the organic compound is replaced by acrylic acid series with COOH -(CH 2 )n-COOH series, the COOH-(CH 2 ) n-COOH series of malonic acid, succinic acid, glutaric acid, azelaic acid, pimelic acid, this embodiment will use glutaric acid as an example to describe in detail.

[0059] Specifically, in the second mixed solution preparation step of the method for preparing organically modified barium titanate nanoparticles, 1 mol / L sodium hydroxide solution and 100 mg glutaric acid were added to the first mixed solution to obtain the second mixed solution. Two mixed solutions. Wherein, the glutaric acid contains carbon-hydrogen bonds and carbon-oxygen bonds.

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Abstract

The invention provides a preparation method of an organic modified barium titanate nano particle and a preparation method of a quantum dot optical film. The preparation method of the organic modifiedbarium titanate nano particle comprises the following steps: adding barium hydroxide octahydrate into deionized water uniformly stirring to obtain a barium hydroxide solution; adding tetrabutyl titanate into an ethanol solvent, uniformly stirring to obtain a tetrabutyl titanate solution; adding the barium hydroxide solution into the tetrabutyl titanate solution to obtain a first mixed solution; adding a sodium hydroxide solution and an organic matter into the first mixed solution to obtain a second mixed solution, wherein the organic matter contains a carbon hydrogen bond and a carbon oxygen bond; sealing the second mixed solution in a high-pressure reaction kettle; carrying out high-temperature and high-pressure reactions on the second mixed solution, and carrying out centrifugal separation and purification to obtain the organic modified barium titanate nano particle.

Description

technical field [0001] The present application relates to the field of semiconductor display technology, in particular to a method for preparing organically modified barium titanate nanoparticles and a method for preparing quantum dot optical films. Background technique [0002] Quantum dots are a new type of semiconductor material with excellent luminescent properties, mainly composed of elements such as II-VI, III-V, and IV, and their size is close to or smaller than the excitonic Bohr radius. The wavelength of the emitted light in the visible light band is adjustable, the half-maximum width is narrow, and the luminous efficiency is high. It has strong application potential in the application fields of white LED, QLED and photodetector. Quantum dots are used in the display field. Due to their high synthesis cost and high price, in order to reduce the amount of quantum dots, scattering particles can be doped to increase the brightness of quantum dots. At the same time, it c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/08C09C3/10C09K11/02B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09C1/36C09C3/006C09C3/08C09C3/10C09K11/02
Inventor 孙小卫王恺周淼杨鸿成刘湃徐冰陈黎暄宋自航李吉
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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