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Electrochromic coating and preparation method thereof as well as electrochromic film and preparation method thereof

An electrochromic film, electrochromic technology, applied in multi-color effect coatings, coatings, optics, etc., can solve the problems of poor resin aging resistance, low operating temperature and low service life of electrochromic films

Active Publication Date: 2021-05-04
ECO BAO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this type of electrochromic film can only be used indoors due to its low operating temperature, poor aging resistance of the resin, and low service life.

Method used

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  • Electrochromic coating and preparation method thereof as well as electrochromic film and preparation method thereof
  • Electrochromic coating and preparation method thereof as well as electrochromic film and preparation method thereof
  • Electrochromic coating and preparation method thereof as well as electrochromic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0064] The preparation steps of electrochromic paint are:

[0065] S1. First mix isobornyl methacrylate and 3,5,5-trimethylhexyl acrylate and heat to 50°C, then stir at 300rpm for 5min, so that isobornyl methacrylate and 3,5 , 5-trimethylhexyl acrylate is polymerized to obtain a liquid prepolymer in a transparent viscous state;

[0066] S2. Add benzoin bisformaldehyde to the prepolymer, and stir for 10 minutes at a speed of 200 rpm, so that the benzoin bisformaldehyde is fully dissolved;

[0067] S3. After adding β-carboxyethyl acrylate and UV curable resin 07B to the liquid obtained in S2, stir at 200 rpm for 10 minutes to form a resin;

[0068] S4. Add mixed liquid crystals to the resin, and then stir for 30 minutes at a speed of 200 rpm;

[0069] S5, then adding a 15 μm spacer, and stirring at a speed of 200 rpm for 20 min to obtain a coating mixture;

[0070] S6. Use ultrasonic waves to disperse the coating mixture of S5 for 30 minutes, so as to further fully mix all th...

Embodiment 22-28

[0110] The difference between Examples 22-28 of the electrochromic film and Example 1 of the electrochromic film is that the process parameters for preparing the electrochromic film in this electrochromic film comparative example are different, and the others are the same as in Example 1 of the electrochromic film. See Table 6.

[0111] Preparation process in Table 6 electrochromic film embodiment 22-28

[0112]

[0113] Comparative example of electrochromic film

[0114] Electrochromic film comparative example 1-12

[0115] The difference between the electrochromic film comparative examples 1-12 and the electrochromic film embodiment 1 is that the electrochromic coating selected in the electrochromic film comparative example is different, and the others are the same as the electrochromic film embodiment 1, see Table 7 for details .

[0116] Table 7 Preparation of Electrochromic Film Comparative Examples 1-12 Selection of Electrochromic Coatings

[0117]

[0118] ...

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Abstract

The invention relates to the technical field of electrochromic films, and particularly discloses an electrochromic coating, a preparation method of the electrochromic coating, an electrochromic film and a preparation method of the electrochromic film. The electrochromic coating is prepared from the following components: a 3, 5, 5-trimethylhexyl acrylate prepolymer, beta-carboxyethyl acrylate, a photoinitiator, UV curing resin, mixed liquid crystal and a spacer. The preparation method of the electrochromic coating comprises the following steps: S1, preparing the 3, 5, 5-trimethylhexyl acrylate prepolymer, S2, then adding the photoinitiator, beta-carboxyethyl acrylate, UV curing resin, mixed liquid crystal and the spacer, and performing stirring, and S3, uniformly mixing the mixture to obtain the electrochromic coating. The electrochromic film is prepared from the electrochromic coating. The electrochromic film prepared by the invention has relatively good haze and transmittance in a relatively wide working range, and is low in working voltage.

Description

technical field [0001] The present application relates to the technical field of electrochromic film, more specifically, it relates to an electrochromic coating and a preparation method thereof, an electrochromic film and a preparation method thereof. Background technique [0002] Electrochromism refers to the phenomenon of stable and reversible color transformation of the reflectance and transmittance of materials under the action of an external electric field. The electrochromic film (or dimming film) mainly controls the movement of liquid crystal molecules through the change of the external electric field, so as to realize the transformation of the film material from a colorless transparent state to an atomized opaque state. Because of its good optical properties, it can be used in conference offices, banks, commercial windows, and car windows. [0003] An important performance of the electrochromic film is to require low haze and high transmittance in the open state. A...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D5/29C09D7/63C09D7/65G02F1/1516
CPCC09D4/06C09D5/29C09D7/63C09D7/65G02F1/15165
Inventor 咸才军王建平
Owner ECO BAO
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