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High-transmittance intelligent liquid crystal dimming film and preparation method thereof

A liquid crystal dimming film, high transmittance technology, applied in optics, nonlinear optics, instruments, etc., can solve the problem of high polymer raw material price, high price of intelligent dimming film products, slow development of organic synthesis process, etc. problem, to achieve good photoinitiation efficiency, avoid aggregation and precipitation, and ensure the effect of haze and transmittance

Active Publication Date: 2020-04-24
佛山市水大光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Subsequently, South Korea, Japan and other manufacturers began to intervene in this field in the mid-1990s. Chinese manufacturers entered the production field more than ten years after the advent of smart dimming films. However, due to the slow development of organic synthesis technology, the price of liquid crystals and polymers The price of polymer raw materials is high, the production of smart dimming film products is expensive, the market acceptance is low, and the development is slow. The application of smart dimming films is mainly concentrated in laboratory research and aerospace and military applications.

Method used

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  • High-transmittance intelligent liquid crystal dimming film and preparation method thereof
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  • High-transmittance intelligent liquid crystal dimming film and preparation method thereof

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Embodiment 1

[0059] The preparation method of high transmittance intelligent liquid crystal dimming film comprises the following steps:

[0060] Step S1: Add 30 parts by weight of polyurethane acrylate, biphenyl liquid crystal (for details, use 4'-allyloxy-4-perfluorooctanoyloxy-biphenyl prepared in Example 1 of patent application number 201010165461.6) 50 Parts by weight, hollow glass microspheres (manufacturer Lingshou County Baifeng Mineral Products Processing Plant, particle size 10 μm, wall thickness 1 μm) 1.2 parts by weight, photoinitiator 1173 (chemical name 2-hydroxyl-2-methyl-1-phenyl -1-Acetone, CAS No.: 7473-98-5) 3 parts by weight, polyether modified silicone surfactant (prepared with reference to Example 1 of Patent Application No. 201510054047.0) 1 part by weight, pentaerythritol ester (CAS No. 8050 -10-0) 0.9 parts by weight, fully stirred evenly to obtain a mixed solution;

[0061] Step S2: Place the mixed solution between two conductive films, the conductive layers of th...

Embodiment 2

[0068] The preparation method of high transmittance intelligent liquid crystal dimming film comprises the following steps:

[0069] Step S1: Add 30 parts by weight of polyurethane acrylate, biphenyl liquid crystal (for details, use 4'-allyloxy-4-perfluorooctanoyloxy-biphenyl prepared in Example 1 of patent application number 201010165461.6) 50 Parts by weight, hollow glass microspheres (manufacturer Lingshou County Baifeng Mineral Products Processing Plant, particle size 10 μm, wall thickness 1 μm) 1.2 parts by weight, photoinitiator 1173 (chemical name 2-hydroxyl-2-methyl-1-phenyl -1-Acetone, CAS No.: 7473-98-5) 3 parts by weight, polyether modified silicone surfactant (prepared with reference to Example 1 of Patent Application No. 201510054047.0) 1 part by weight, pentaerythritol ester (CAS No. 8050 -10-0) 0.9 parts by weight, fully stirred evenly to obtain a mixed solution;

[0070] Step S2: Place the mixed solution between two conductive films, the conductive layers of th...

Embodiment 3

[0078] The preparation method of high transmittance intelligent liquid crystal dimming film comprises the following steps:

[0079]Step S1: Add 30 parts by weight of polyurethane acrylate, biphenyl liquid crystal (for details, use 4'-allyloxy-4-perfluorooctanoyloxy-biphenyl prepared in Example 1 of patent application number 201010165461.6) 50 Parts by weight, hollow glass microspheres (manufacturer Lingshou County Baifeng Mineral Products Processing Plant, particle size 10 μm, wall thickness 1 μm) 1.2 parts by weight, photoinitiator 3 parts by weight, polyether modified silicone surfactant (refer to patent application No. 201510054047.0 prepared in Example 1) 1 weight part, pentaerythritol ester (CAS No. 8050-10-0) 0.9 weight part, fully stirred evenly to obtain a mixed solution;

[0080] Step S2: Place the mixed solution between two conductive films, the conductive layers of the conductive films are placed on the inner side and facing each other, and the mixed solution is coa...

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Abstract

The invention discloses a high-transmittance intelligent liquid crystal dimming film and a preparation method thereof. The preparation method of the high-transmittance intelligent liquid crystal dimming film comprises the following steps: step S1, fully and uniformly stirring urethane acrylate, biphenyl liquid crystal, spacer particles, a photoinitiator, a surfactant and pentaerythritol ester to obtain a mixed solution; step S2, placing the mixed solution between two conductive films, and rolling to form a thin film; step S3, carrying out first-step ultraviolet irradiation polymerization on the film; and step S4, under the condition that an electric field is applied to the thin film, performing second-step ultraviolet irradiation polymerization on the thin film to obtain the high-transmittance intelligent liquid crystal dimming film. The high-transmittance intelligent liquid crystal dimming film has good shielding performance when in an off state, has a good visual effect when in an onstate, and is suitable for being used in occasions needing privacy protection, space permeability, safety defense and light ray adjustability.

Description

technical field [0001] The invention relates to the technical field of optoelectronic materials, in particular to an intelligent liquid crystal dimming film with high transmittance and a preparation method thereof. Background technique [0002] Smart dimming film is an electro-optic functional material that can control light. In the late 1980s, smart dimming film technology was invented by the University of Kent in Texas, USA, and authorized to commercialize by Baochuang Corporation of the United States. Subsequently, South Korea, Japan and other manufacturers began to intervene in this field in the mid-1990s. Chinese manufacturers entered the production field more than ten years after the advent of smart dimming films. However, due to the slow development of organic synthesis technology, the price of liquid crystals and polymers The price of polymer raw materials is high, the production of smart dimming film products is expensive, the market acceptance is low, and the devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J5/18C08J3/28C08L75/14C08K7/28C08K5/107C08K5/103G02F1/1334
CPCC08J7/123C08J5/18C08J3/28G02F1/1334C08J2375/14C08K7/28C08K5/107C08K5/103
Inventor 杜康伟
Owner 佛山市水大光电科技有限公司
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