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Perovskite quantum dot membrane, quantum dot diffusion composite membrane and preparation method of quantum dot diffusion composite membrane

A quantum dot film, diffusion composite technology, applied in chemical instruments and methods, luminescent coatings, polycarbonate coatings, etc., can solve problems such as poor adhesion, and achieve the effect of improving adhesion and firm chemical bonding.

Inactive Publication Date: 2018-04-24
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When biaxially oriented thermoplastic resin films such as biaxially oriented optical polyester films are used, it has a problem of poor adhesion to the above polymers due to the high degree of crystallographic orientation on the film surface

Method used

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  • Perovskite quantum dot membrane, quantum dot diffusion composite membrane and preparation method of quantum dot diffusion composite membrane
  • Perovskite quantum dot membrane, quantum dot diffusion composite membrane and preparation method of quantum dot diffusion composite membrane

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preparation example Construction

[0038] The preparation method of the quantum dot diffusion composite film of the present invention comprises the following steps:

[0039](1) The polymer is dissolved in an organic solvent, and the mass ratio is controlled to be: polymer: organic solvent=1:5~1:50. After the polymer is completely dissolved, a uniform and viscous polymer solution is obtained. Add additive in the polymer solution, control mass ratio is: polymer: additive=1:0~1:0.5, add adhesion promoter after mixing, control mass ratio is: polymer: adhesion promoter=1: 0.01~1:0.15, mix well, and the obtained solution is used as the first solution.

[0040] The polymer described in this step is polyvinylidene fluoride (PVDF), polyvinyl acetate (PVAc), cellulose acetate (CA), polysulfone (PSF), aromatic polyamide (PA), polyimide (PI ), polycarbonate (PC), polystyrene (PS); said additive is a kind of in polyvinylpyrrolidone (PVP), polyethylene glycol (PEG), and the effect of additive is to regulate polymer The vis...

Embodiment 1

[0047] (1) The polymer is dissolved in an organic solvent, and the mass ratio is controlled to be: polymer: organic solvent=1:5. After the polymer is completely dissolved, a uniform and viscous polymer solution is obtained. In the above-mentioned prepared polymer solution Add additives in the mixture, the control mass ratio is: polymer: additive=1:0, add adhesion promoter after mixing uniformly, control mass ratio is: polymer: adhesion promoter=1:0.08, mix uniformly, the solution obtained As the first solution; the polymer is polyvinyl acetate (PVAc); the organic solvent is N,N-dimethylformamide (DMF); the adhesion promoter is carboxyl-containing resin adhesion Accelerator (Teco LTW).

[0048] (2) the organic amine halide CH 3 NH 3 Br and inorganic halide PbBr 2 Dissolve in the organic solvent according to the stoichiometric ratio of 1:1, the control mass ratio is: organic solvent: inorganic halide=1:0.01, mix well, and the solution obtained is used as the second solution; ...

Embodiment 2

[0053] (1) The polymer is dissolved in an organic solvent, and the mass ratio is controlled to be: polymer: organic solvent=1:10. After the polymer is completely dissolved, a uniform and viscous polymer solution is obtained. In the polymer solution prepared above Add additives in the mixture, control mass ratio is: polymer: additive=1:0.1, add adhesion promoter after mixing uniformly, control mass ratio is: polymer: adhesion promoter=1:0.1, mix uniformly, the solution obtained As the first solution; the polymer is cellulose acetate (CA); the organic solvent is dimethylsulfoxide (DMSO); the additive is polyvinylpyrrolidone (PVP); the adhesion promoter is containing Carboxyl-based resin adhesion promoter (Teco LTW).

[0054] (2) the organic amine halide CH 3 NH 3 Cl, CH 3 NH 3 Br and inorganic halide PbBr 2 According to the stoichiometric ratio of 0.5:0.5:1 dissolved in the organic solvent, the control mass ratio is: organic solvent: inorganic halide = 1:0.02, mixed uniform...

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Abstract

The invention relates to a perovskite quantum dot membrane, a quantum dot diffusion composite membrane and a preparation method of the quantum dot diffusion composite membrane. According to the perovskite quantum dot membrane, one side of a base material is coated with a green light-emitting perovskite quantum dot layer, and the structural formula of perovskite quantum dots is CH3NH3PbClxBr3-x (0<=x<=1); the perovskite quantum dot layer is composed of the perovskite quantum dots, polymers, adhesion promoter and additives. The perovskite quantum dot membrane introduces the adhesion promoter tothe polymers to form intermediate bridge effects between the resin coating and the base material of the polymers and further to enhance adhesion; the other side of the green light-emitting perovskitequantum dot membrane is coated with a light diffusion layer to form a green light-emitting quantum dot diffusion composite membrane, and by combining the back light source design of blue LEDs (light emitting diode) and KSF red fluorescent powder, the green light-emitting quantum dot diffusion composite membrane achieves the combined effects of light conversion and light diffusion and accordingly can replace a light diffusion membrane during application to a backlight module.

Description

technical field [0001] The invention relates to the technical field of quantum dot films, in particular to a perovskite quantum dot film applied to a backlight module, a quantum dot diffusion composite film and its preparation. Background technique [0002] Biaxially oriented optical polyester (PET) film is widely used in various optical polyester film materials due to its good dimensional stability, chemical resistance, high transparency and good processability compared with other plastic films. Deep Processing. For example, substrate films such as quantum dot films, light diffusion films, hard coat films, prism films, and transparent conductive films in the liquid crystal display (LCD) field. [0003] The document with Chinese patent application number 201510245596.6 discloses a perovskite / polymer composite luminescent material and its preparation method, which realizes the in-situ preparation of perovskite quantum dots in a polymer matrix, and the obtained composite mate...

Claims

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Application Information

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IPC IPC(8): C08J7/04C09D131/04C09D101/12C09D127/16C09D181/06C09D177/10C09D179/08C09D169/00C09D125/06C09D133/04C09D5/22C09D7/61C09D7/63C09K11/06C08L67/02C08L23/12C08L79/08
CPCC08J7/04C08J2323/12C08J2367/02C08J2379/08C08J2401/12C08J2425/06C08J2427/16C08J2431/04C08J2433/04C08J2439/06C08J2469/00C08J2471/02C08J2477/10C08J2479/08C08J2481/06C08K3/16C08K5/17C08K2201/003C09K11/06C09K2211/188
Inventor 李彩翠黄永华王增敏何晶晶霍新莉
Owner HEFEI LUCKY SCI & TECH IND
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