A full-process roll-to-roll preparation method of intelligent dimming film

An intelligent dimming, roll-to-roll technology, applied in optics, nonlinear optics, instruments, etc. Optical film preparation and other issues, to achieve the effect of reducing electrode cost, low production cost, and high degree of automation

Active Publication Date: 2019-06-21
北京京城鸿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of ordinary graphene and graphene transparent conductive film is difficult to implement through the roll-to-roll production process, and it is difficult to carry out continuous connection with the subsequent dimming film preparation
[0007] In view of the above technical problems, it is urgent to provide a new production process of intelligent dimming film to solve the problem that the effective connection and continuous production of conductive materials, transparent conductive films and dimming films cannot be realized.

Method used

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  • A full-process roll-to-roll preparation method of intelligent dimming film
  • A full-process roll-to-roll preparation method of intelligent dimming film
  • A full-process roll-to-roll preparation method of intelligent dimming film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Distributed process of graphene transparent conductive film

[0051] (1) Preparation of carbon-containing organic macromolecules and polymer coating fluids

[0052] A polyvinylpyrrolidone (PVP) / N,N-dimethylformamide (DMF) solution with a concentration of 1.2 g / ml was prepared.

[0053] (2) Roll-to-roll process

[0054] The production line is shown as Figure 4 As shown, the flexible substrate can be continuously coated or processed through the transport path. The winding roller 701 pulls the Cu foil substrate 501 with a thickness of 50 μm and a width of 0.5 m, and moves along the direction 801 from the unwinding roller 701 at a speed of 0.1 m / min. The Cu foil substrate then undergoes a series of coating and handling processes in the 801 direction.

[0055] In the pretreatment workstation 601, both sides of the Cu foil are cleaned, and then enter the coating workstation 602, where the coating workstation will coat PVP molecules on the surface of the Cu foil substrate...

Embodiment 2

[0062] Distributed process of liquid crystal smart dimming film

[0063] (1) Preparation of liquid crystal@polymer mixed coating solution

[0064] Mix epoxy resin: polyamide modifier: epichlorohydrin (small molecule to adjust the refractive index) according to the ratio of 4:1:3.2, and then add 70% of the liquid crystal mixture with the same refractive index (LC-Beijing Bayi Time and Space Liquid Crystal Technology Co., Ltd.), fully mixed and stirred at room temperature for 3 hours, that is, the mixed coating solution of liquid crystal@polymer.

[0065] (2) Roll-to-roll process

[0066] Roll to roll production line such as Figure 5 As shown, the two rolls of thin film electrodes prepared according to Example 1 will be placed on the unwinding rollers 710 and 711 respectively, and then the winding roller 714 will pull the thin film electrodes released at 710 into the release film peeling workstation 610 ; at the same time 714 will also pull the film electrode released at 711...

Embodiment 3

[0071] Integrated process of liquid crystal smart dimming film

[0072] (1) Preparation of carbon-containing organic macromolecules and polymer coating fluids

[0073] A polyvinylpyrrolidone (PVP) / N,N-dimethylformamide (DMF) solution with a concentration of 1.2 g / ml was prepared.

[0074] Electrochromic layer coating solution preparation

[0075] The PEDOT:PSS liquid purchased from Zhuhai Kaiwei was passed through a 1000-mesh filter to remove insoluble matter, and then a directly usable electrochromic layer coating liquid was formed.

[0076] Electrolyte layer coating solution preparation

[0077] Dissolve 2.4 parts by mass of lithium perchlorate in 30 parts by mass of propylene carbonate solvent, heat to dissolve, then weigh 3 parts by mass of polymethyl methacrylate into the solution, heat in an oil bath at 70°C for 8 hours , forming a viscous liquid, which is the electrolyte layer coating liquid.

[0078] Roll to Roll Process

[0079] The production line is shown as ...

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Abstract

The invention provides a whole-process roll-to-roll preparation method for an intelligent light adjusting film. The whole-process roll-to-roll preparation method comprises the following steps: (1) splitting a carbon-containing organic macromolecule or/and a macromolecule on the upper surface and the lower surface of a metal foil substrate on a roll-to-roll production line to form a graphene conductive layer; (2) transferring the graphene conductive layer to first and second flexible transparent substrates in a roll-to-roll manner to form first and second graphene transparent conductive thin films; (3) coating or printing the first or/and second graphene transparent conductive thin films with a light adjusting unit to press or glue the first graphene transparent conductive thin film, the second graphene transparent conductive thin film and the light adjusting unit between the two graphene transparent conductive thin films together to prepare the intelligent light adjusting film. According to the preparation method, the preparation of graphene, the preparation of the graphene transparent conductive thin films and the preparation of the light adjusting film are seamlessly connected to the continuous roll-to-roll production line. The roll-to-roll preparation method provided by the invention has the advantages of high flux, simple process, low cost, high automation degree and the like.

Description

[0001] Technical field: [0002] The present invention relates to a whole roll-to-roll preparation method of an intelligent dimming film, in particular to a roll-to-roll preparation method that seamlessly connects graphene preparation, graphene transparent conductive film preparation and subsequent dimming film preparation. [0003] Background of the invention: [0004] Smart dimming film is a photoelectric device that changes its optical parameters such as light transmittance and haze through the input of electrical signals. It is often used in building exterior walls, real estate decoration, automobile glass, automobile rearview mirrors, projection curtain walls, office spaces, public entertainment facilities and other fields. Taking the smart window on the building as the most typical application of smart dimming film as an example, the smart dimming film is combined with architectural glass by sticking, clamping, etc. The intensity of incident light can be reduced to achie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01
CPCG02F1/01
Inventor 刘腾蛟杨树威王云香李丽坤任晓倩
Owner 北京京城鸿业科技有限公司
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