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Low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and preparation method of same

A thin-film material, a technology for dispersing liquid crystals, applied in liquid crystal materials, chemical instruments and methods, etc., to achieve the effects of strong adhesion, high liquid crystal content, and fast free radical diffusion.

Inactive Publication Date: 2016-08-31
BEIJING CAVISION PHOTOELECTRIC TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] PDLC film is now mainly used in smart switchable glass, which has the characteristics of anti-ultraviolet and improving the privacy of life and office. Under the premise of ensuring excellent electro-optic performance and good stability in the preparation, the low driving voltage and safety below 36 volts The voltage is what the market needs now, and the driving voltage of the PDLC film on the market is said to be around 48 volts. In fact, many products are above 65 volts.

Method used

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  • Low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and preparation method of same
  • Low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and preparation method of same
  • Low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and preparation method of same

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Experimental program
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Embodiment 1

[0046] The selected thiol monomer is a: 3,6-dioxa-1,8-octyl disulfide, and the selected acrylic acid monomer is b: 3,5,5-trimethylhexyl acrylate, c: 1, For 4-butanediol diacrylate, the mass ratios of the monomers used are respectively a / b / c / liquid crystal=3 / 6 / 11 / 80wt%. The selected nematic liquid crystal is SLC1717 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.), and the mass ratio of the thiol-containing photopolymerizable monomer to the liquid crystal is 20 / 80 wt%. The content of the added photoinitiator is 0.5% of the total mass of the thiol-containing photopolymerizable monomer, and the content of the glass microspheres is about 3% of the total mass of the liquid crystal and the thiol-containing photopolymerizable monomer. Mix liquid crystal, thiol-containing photopolymerizable monomer, photoinitiator and glass microspheres evenly, sandwich them between two conductive films coated with indium tin oxide (ITO), and laminate them with rubber rollers to form a 5-20 m...

Embodiment 2

[0048] The selected thiol monomer is a: trimethylolpropane tris(3-mercaptopropionate), the selected acrylic acid monomer is b: 3,5,5-trimethylhexyl acrylate, c: 1,4 -Butanediol diacrylate, the mass ratios of the monomers used are respectively a / b / c / liquid crystal=2.5 / 4.5 / 18 / 75wt%. The selected nematic liquid crystal is SLC7011-100 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.), and the mass ratio of the thiol-containing photopolymerizable monomer to the liquid crystal is 25 / 75 wt%. The content of the added photoinitiator is 0.5% of the total mass of the thiol-containing photopolymerizable monomer, and the content of the glass microspheres is about 3% of the total mass of the liquid crystal and the thiol-containing photopolymerizable monomer. Mix liquid crystal, thiol-containing photopolymerizable monomer, photoinitiator and glass microspheres evenly, sandwich them between two conductive films coated with indium tin oxide, and laminate them with rubber rollers to for...

Embodiment 3

[0050] The selected thiol monomer is a: tetrakis (3-mercaptopropionic acid) pentaerythritol ester, and the selected acrylic acid monomer is b: acrylate-3,5,5-trimethylhexyl, c: 1,4-butanediol For diacrylate, the mass ratios of the monomers used are respectively a / b / c / liquid crystal=1.5 / 3.5 / 25 / 70wt%. The selected nematic liquid crystal is SLC7011-100 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.), and the mass ratio of the thiol-containing photopolymerizable monomer to the liquid crystal is 30 / 70wt%. The content of the added photoinitiator is 0.1% of the total mass of the photopolymerizable monomer, and the content of the glass microsphere is about 0.1% of the total mass of the liquid crystal and the thiol-containing photopolymerizable monomer. Mix liquid crystal, thiol-containing photopolymerizable monomer, photoinitiator and glass microspheres evenly, sandwich them between two conductive films coated with indium tin oxide, and laminate them with rubber rollers to f...

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Abstract

The invention discloses a low-voltage-driven mercaptan-containing polymer dispersed liquid crystal thin film material and a preparation method of the same. The thin film material includes liquid crystal, a mercaptan-containing photo-polymerizable monomer, glass micro beads, and a photo-initiator. The mass ratio of the liquid crystal to the mercaptan-containing photo-polymerizable monomer is 7:3-8:2. The content of the glass micro beads is 0.1-5% of the total mass of the liquid crystal and the mercaptan-containing photo-polymerizable monomer. The content of the photo-initiator is 0.1-1% of the mass of the mercaptan-containing photo-polymerizable monomer. The polymer dispersed liquid crystal thin film material has low driving voltage.

Description

technical field [0001] The invention belongs to the field of liquid crystal application technology, and provides a low-voltage driving thiol-containing polymer dispersed liquid crystal thin film material and a preparation method thereof. The prepared thin film material can be widely used in the research of intelligent display, dimming glass, and other related fields . Background technique [0002] Polymer Dispersed Liquid Crystal (PDLC) is a composite material in which liquid crystal droplets are uniformly dispersed in a polymer matrix. Because of its special electro-optic response properties, it has become a research hotspot in the field of flat panel display. The PDLC material shows two states of transparency and light scattering under the on and off action of the electric field. When the incident light enters the PDLC film without an electric field, because the effective refractive index of the incident light passing through the liquid crystal droplet is quite different ...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F220/18C08F2/44C08K5/37C08J5/18C09K19/52
CPCC09K19/52C08F222/14C08J5/18C08K5/37C08J2335/02C08F220/1806C08F2/44
Inventor 杨槐孙宇尖贺泽民余国钊
Owner BEIJING CAVISION PHOTOELECTRIC TECH CO LTD
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