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Polymer dispersed liquid crystal film and production process thereof

A technology for dispersing liquid crystals and polymers, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as high costs, high technology transfer costs, and restrictions on the promotion of smart dimming glass, and achieve process optimization and cost reduction.

Active Publication Date: 2012-07-04
浙江鼎昇新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the main technology of PDLC film needs to introduce foreign technology and equipment. Due to the high cost of technology transfer and the high cost of imported raw materials, the further promotion of smart dimming glass is greatly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of production technology of polymer dispersion liquid crystal film, comprises the following steps:

[0016] 1. Use one or more of epoxy acrylate, polyether acrylate and polyurethane acrylate as oligomer, and one or more of aromatic amine, acid anhydride and linear synthetic resin oligomer as curing agent One or more of acrylates and vinyl ethers are used as diluting monomers and one or more of benzophenones and benzophenones are used as photoinitiators, among which oligomers, curing agents, diluting monomers 1. The photoinitiator is configured into a polymer intermediate according to the ratio of 20%: 60%: 15%: 5% by mass;

[0017] 2. The mass ratio between the configured polymer intermediate, LC liquid crystal using cholesteryl nonanoic acid ester as the monomer and polyethylene as the accelerator is 35%:65%:0.1% to configure the polymer- Liquid crystal combination liquid;

[0018] 3. Fully mix the well-proportioned mixed liquid under the conditions of 35°...

Embodiment 2

[0022] A kind of production technology of polymer dispersion liquid crystal film, comprises the following steps:

[0023] 1. Use one or more of epoxy acrylate, polyether acrylate and polyurethane acrylate as oligomer, and one or more of aromatic amine, acid anhydride and linear synthetic resin oligomer as curing agent One or more of acrylates and vinyl ethers are used as diluting monomers and one or more of benzophenones and benzophenones are used as photoinitiators, among which oligomers, curing agents, diluting monomers 1, photoinitiator four are configured as macromolecular intermediate according to the ratio of 30%: 60%: 10%: 0.1% by mass;

[0024] 2. The mass ratio between the configured polymer intermediate, liquid crystal using cholesteryl nonanoate as monomer and polyethylene as accelerator is 40%:45%:15% to form polymer-liquid crystal Combined mixture;

[0025] 3. Fully mix the well-proportioned mixed liquid under the conditions of 35°C to 60°C, the rotation speed i...

Embodiment 3

[0029] A kind of production technology of polymer dispersion liquid crystal film, comprises the following steps:

[0030] 1. Use one or more of epoxy acrylate, polyether acrylate and polyurethane acrylate as oligomer, and one or more of aromatic amine, acid anhydride and linear synthetic resin oligomer as curing agent One or more of acrylates and vinyl ethers are used as diluting monomers and one or more of benzophenones and benzophenones are used as photoinitiators, among which oligomers, curing agents, diluting monomers 1, photoinitiator four by mass be that 34%: 60%: 1%: 5% ratio is combined to configure polymer intermediate;

[0031] 2. The mass ratio between the prepared polymer intermediate, the liquid crystal using cholesteryl nonanoate as the monomer and polyethylene as the accelerator is 80%:20%:0.1% to form the polymer-liquid crystal Combined mixture;

[0032] 3. Fully mix the well-proportioned mixed liquid under the conditions of 35°C to 60°C, the rotation speed i...

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PUM

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Abstract

The invention discloses a polymer dispersed liquid crystal film, which is prepared from the following raw material formula according to a mass ratio: 35-80% of polymer intermediate, 15-60% of liquid crystal (LC) with cholesteryl nonanoate as a monomer, and 0.1-15% of polyethylene serving as an accelerant. The production process of the polymer dispersed liquid crystal film comprises the steps of: carrying out high-speed sufficient stirring on the raw materials at the temperature of 35-60 DEG C according to the amount of the raw material formula, uniformly and accurately coating the stirred polymer-liquid crystal mixed liquid between two layers of ITO (Indium Tin Oxide) films, laminating to form a three-in-one film, and carrying out ultraviolet curing on the laminated three-in-one film to obtain the polymer dispersed liquid crystal film. According to the invention, a polymer and liquid crystal mixed formula is adopted, and an optimized and lower-cost PDLC (Polymer Dispersed Liquid Crystal) formula is invented. Through trial production, the performances of the produced product completely meet the international standard, and the cost is greatly lowered by 50%.

Description

technical field [0001] The invention relates to the field of liquid crystal technology, in particular to a polymer dispersed liquid crystal film and a production process thereof. Background technique [0002] The research on the adjustable light transmittance of glass began in the 1970s, and first entered the experimental stage in developed countries in Europe and America. In terms of existing technologies and processes, electronically controlled polymer dispersed liquid crystal (PDLC) film laminated glass technology is the most reliable, low-consumption and relatively mature. Its products also occupy a larger share in the market. [0003] Polymer dispersed liquid crystal film (PDLC) is an emerging energy-saving and environmentally friendly material. It has high light transmittance, effective and convenient privacy protection measures, extremely low energy consumption, and excellent heat preservation ability, so it is favored by customers. In PDLC film, PDLC liquid cr...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08L23/06C08J3/28C09K19/52
Inventor 来炜刚胡苏萍张成
Owner 浙江鼎昇新材料科技股份有限公司
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