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Preparation method of liquid crystal dimming film

A technology of liquid crystal dimming film and dispersion liquid, applied in optics, nonlinear optics, instruments, etc., can solve the problems of short life and photoaging of dimming film, achieve low surface resistance, slow down photochemical reaction, and slow down photoaging The effect of the process

Inactive Publication Date: 2019-09-17
TIANJIN BAOXINGWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the irradiation of ultraviolet rays in the prior art, the light-adjustable film is prone to photoaging, resulting in a short life span

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of a liquid crystal dimming film, comprising the following steps:

[0026] (1) Preparation of polymer dispersion raw materials

[0027] Weigh 25-30 parts of monomer hydroxypropyl methacrylate, 38-45 parts of epoxy resin, 22-28 parts of o-phenylphenoxyethyl acrylate, 4-6 parts of lauryl methacrylate, 140-180 parts of liquid crystals, 4-6 parts of photoinitiators, 4-6 parts of light stabilizers, 1.8-2.2 parts of nanoparticles, 2-2.5 parts of vanadium dioxide particles;

[0028] (2) Preparation of polymer dispersion

[0029] Stir the monomer hydroxypropyl methacrylate, epoxy resin, o-phenylphenoxyethyl acrylate and lauryl methacrylate evenly, then add liquid crystal, photoinitiator, light stabilizer, nanoparticles, vanadium dioxide in sequence Particles, add each material and stir evenly before adding the next material, at this time the polymer dispersion is obtained;

[0030] (3) Preparation of conductive film layer

[0031] The first PET layer an...

Embodiment 1

[0044] A preparation method of a liquid crystal dimming film, comprising the following steps:

[0045] (1) Preparation of polymer dispersion raw materials

[0046] Weigh 25 parts of monomer hydroxypropyl methacrylate, 38 parts of epoxy resin, 22 parts of o-phenylphenoxyethyl acrylate, 4 parts of lauryl methacrylate, 140 parts of liquid crystal, and 4 parts of photoinitiator 4 parts, 4 parts of light stabilizer and 1.8 parts of nanoparticles, 2 parts of vanadium dioxide particles;

[0047] (2) Preparation of polymer dispersion

[0048] Stir the monomer hydroxypropyl methacrylate, epoxy resin, o-phenylphenoxyethyl acrylate and lauryl methacrylate evenly, then add liquid crystal, photoinitiator, light stabilizer, nanoparticles, vanadium dioxide in sequence Particles, add each material and stir evenly before adding the next material, at this time the polymer dispersion is obtained;

[0049] (3) Preparation of conductive film layer

[0050] The first PET layer and the first Ag ...

Embodiment 2

[0063] A preparation method of a liquid crystal dimming film, comprising the following steps:

[0064] (1) Preparation of polymer dispersion raw materials

[0065] Weigh 30 parts of monomer hydroxypropyl methacrylate, 45 parts of epoxy resin, 28 parts of o-phenylphenoxyethyl acrylate, 6 parts of lauryl methacrylate, 180 parts of liquid crystal, and 6 parts of photoinitiator 6 parts, 6 parts of light stabilizers and 2.2 parts of nanoparticles, 2.5 parts of vanadium dioxide particles;

[0066] (2) Preparation of polymer dispersion

[0067] Stir the monomer hydroxypropyl methacrylate, epoxy resin, o-phenylphenoxyethyl acrylate and lauryl methacrylate evenly, then add liquid crystal, photoinitiator, light stabilizer, nanoparticles, vanadium dioxide in sequence Particles, add each material and stir evenly before adding the next material, at this time the polymer dispersion is obtained;

[0068] (3) Preparation of conductive film layer

[0069] The first PET layer and the first ...

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Abstract

The invention relates to a preparation method of a liquid crystal dimming film. The preparation method is characterized by comprising the following steps of firstly preparing materials such as monomeric hydroxypropyl methacrylate, a liquid crystal, a light stabilizer, and vanadium dioxide particles; preparing polymer dispersion liquid; coating the polymer dispersion solution on a conductive film layer; and finally carrying out ultraviolet curing and sizing to obtain the liquid crystal dimming film after the ultraviolet curing and sizing are finished. The vanadium dioxide nanoparticles added in the liquid crystal dimming film endow the liquid crystal dimming film with a property that the near-infrared light transmittance is intelligent and controllable; at the same time, the light stabilizer is capable of shielding or absorbing the energy of the ultraviolet light, so that the dimming film is capable of avoiding or slowing down the photoelectric reaction under the irradiation of the light, thereby slowing down the optical ageing process of the dimming film; and finally, the used Ag-containing dimming film has a lower sheet resistance value when being compared with the ITO conductive films, and has large advantages in the application to the low-voltage and large-sized dimming glass.

Description

technical field [0001] The invention relates to the technical field of liquid crystal dimming films, in particular to a preparation method of liquid crystal dimming films. Background technique [0002] Dimming film is an electronic light control product, which means that polymer dispersed liquid crystal is solidified between two transparent conductive films. In the absence of an electric field, the dimming film is in an opaque state. When AC is applied, is transparent. Generally used for glass partitions, such as hotel partitions, office partitions, bathroom partitions, bank, ticket office window partitions, etc., it is beautiful and can protect privacy, and has multiple functions such as waterproof, heat insulation, and dimming. The light-adjustable film in the prior art is prone to photoaging due to the irradiation of ultraviolet rays, resulting in a short service life. Contents of the invention [0003] The invention aims to solve the deficiencies of the prior art, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1334G02F1/1333C09D4/02C09D4/06C09D7/61
CPCC09D4/06C09D7/61G02F1/1333G02F1/1334
Inventor 司荣美鲍彦广
Owner TIANJIN BAOXINGWEI TECH
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