Composition and film for producing polymer dispersion liquid crystal, and producing method thereof

A technology for dispersing liquid crystals and compositions, applied in chemical instruments and methods, liquid crystal materials, etc., can solve problems such as complex preparation process, and achieve the effects of good thermal stability, driving voltage and contrast increase

Inactive Publication Date: 2009-05-13
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the complex preparation process of polymer dispersed liquid crystals in the prior art, and to provide a composition for preparing polymer dispersed liquid crystals with a simple preparation process

Method used

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  • Composition and film for producing polymer dispersion liquid crystal, and producing method thereof
  • Composition and film for producing polymer dispersion liquid crystal, and producing method thereof
  • Composition and film for producing polymer dispersion liquid crystal, and producing method thereof

Examples

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Effect test

Embodiment 1

[0057] This example is used to illustrate the composition for preparing polymer-dispersed liquid crystal, the polymer-dispersed liquid crystal film and the preparation method thereof provided by the present invention.

[0058] The monomers are hydroxyethyl methacrylate (Bainwei, 98%) and trimethylolpropane-2-mercaptoacetate (Aldrich), the liquid crystal is a mixture of biphenylcyanide liquid crystals, and the crosslinking agent is 1,3,5- Triallyl-1,3,5-triazine-2,4,6-trione (Bai Lingwei), the photoinitiator is benzophenone (Bai Lingwei, 99%). Mix hydroxyethyl methacrylate, trimethylolpropane-2-mercaptoacetate, crosslinking agent and initiator in a weight ratio of 16:14:2:5 to prepare the polymer compound of the present invention. Compositions for dispersing liquid crystals. The composition is mixed with liquid crystal, so that the weight ratio of hydroxyethyl methacrylate, trimethylolpropane-2-mercaptoacetate, crosslinking agent, initiator and liquid crystal is 16:14:2:5:70, ...

Embodiment 2

[0065] This example is used to illustrate the composition for preparing polymer-dispersed liquid crystal, the polymer-dispersed liquid crystal film and the preparation method thereof provided by the present invention.

[0066] The monomers are trimethylolpropane triacrylate (Aldrich) and trimethylolpropane-3-mercaptopropionate (Aldrich), the liquid crystal is a mixture of biphenyl cyanide liquid crystals, and the crosslinking agent is 2,4,6- Triallyloxy-1,3,5-triazine, the initiator is benzophenone (Baringwei, 99%). Mix trimethylolpropane triacrylate, trimethylolpropane-3-mercaptopropionate, crosslinking agent and initiator in a weight ratio of 23:27:0.5:1 to obtain the present invention. Polymer dispersed liquid crystal composition. Mix trimethylolpropane triacrylate, trimethylolpropane-3-mercapto propionate, crosslinking agent, initiator and liquid crystal in a weight ratio of 23:27:0.5:1:50 to obtain the present invention Compositions containing liquid crystals for the pr...

Embodiment 3

[0073] This example is used to illustrate the composition for preparing polymer-dispersed liquid crystal, the polymer-dispersed liquid crystal film and the preparation method thereof provided by the present invention.

[0074] The monomer is 1,6-hexanediol diacrylate, the liquid crystal is p-pentylcyclohexyl formate liquid crystal, and the crosslinking agent is 1,3,5-triacryloyl-1,3,5 - Triazine (Aldrich) with benzoin dimethyl ether as initiator. The 1,6-hexanediol diacrylate, the crosslinking agent and the initiator were uniformly mixed in a weight ratio of 20:1:4 to prepare a polymer dispersed liquid crystal composition. Mix 1,6-hexanediol diacrylate, crosslinking agent, initiator and liquid crystal uniformly in a weight ratio of 20:1:4:80 to obtain the composition containing liquid crystals of the present invention for preparing polymer-dispersed liquid crystals thing.

[0075] Apply the liquid crystal-containing composition for preparing polymer-dispersed liquid crystals e...

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Abstract

The invention provides a composition for preparing polymer dispersed liquid crystal. The composition comprises polymerization monomer and light initiator; the polymerization monomer is at least one of acrylic ester, methacrylic acid ester, acrylic acid and methacrylic acid compounds or the mixture of at least one of the acrylic ester, the methacrylic acid ester, the acrylic acid and the methacrylic acid compounds and an unpolymerized composition containing hydrosulfide group, wherein the composition also comprises an acrylic acid triazine compound congaing crosslinking agent. The invention also provides a liquid crystal containing composition for preparing the polymer dispersed liquid crystal; moreover, the invention also provides polymer dispersed liquid crystal (PDLC) and a PDLC membrane prepared from the composition of the invention and a method for preparing the PDLC membrane. The PDLC membrane prepared from the composition of the invention has higher contrast, lower driving voltage and good thermal stability.

Description

technical field [0001] The invention relates to a composition for preparing polymer-dispersed liquid crystals, polymer-dispersed liquid crystals and polymer-dispersed liquid crystal films prepared from the composition, and a preparation method for polymer-dispersed liquid crystal films. Background technique [0002] Polymer Dispersed Liquid Crystal (PDLC for short) is a polymer network and liquid crystal composite formed by uniformly dispersing liquid crystal droplets in a polymer matrix. PDLC has good electro-optical characteristics and is widely used in optoelectronic devices. For example, CN1938398A discloses that PDLC is used in a modulator, which obviously reduces the driving voltage and significantly improves the sensitivity. The electro-optical performance of PDLC is mainly affected by the distribution of the two phases of polymer matrix and liquid crystal in PDLC. The factors affecting the distribution of the two phases include: the mesh size and distribution of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/38
Inventor 张凌紫饶先花胡娟江林宫清
Owner BYD CO LTD
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