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Polyurethane material with electrochromic properties and its preparation method and application

A polyurethane material, electrochromic technology, applied in the direction of color-changing fluorescent materials, preparation of organic compounds, preparation of amino hydroxy compounds, etc., can solve the problems of polyurethane is not easy to dissolve, difficult to process, does not have electrochromic properties, etc.

Active Publication Date: 2018-09-07
HARBIN INST OF TECH
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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 provide a preparation method and application of a polyurethane material with electrochromic properties in order to solve the problems that ordinary polyurethane is difficult to dissolve, difficult to process and has no electrochromic properties

Method used

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  • Polyurethane material with electrochromic properties and its preparation method and application
  • Polyurethane material with electrochromic properties and its preparation method and application
  • Polyurethane material with electrochromic properties and its preparation method and application

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specific Embodiment approach 1

[0023] Specific embodiment one: the preparation method of the polyurethane material with electrochromic performance in this embodiment is implemented according to the following steps:

[0024] 1. Add p-methoxyaniline and tetrafluoronitrobenzene to dimethyl sulfoxide solvent at a molar ratio of 0.1 to 0.9:1, and feed N 2 , react at a temperature of 70-190° C. for 1-2 days, filter, wash with water, and dry to obtain methoxydinitrotriphenylamine (solid product);

[0025] 2. Put methoxydinitrotriphenylamine and 5wt.% Pd / C into a reaction vessel, add absolute ethanol and hydrazine hydrate reagent, react at a temperature of 70-150°C for 20-40 hours, cool and filter to remove Pd / C, there is solid powder to separate out in the filtrate, then use acetone to carry out recrystallization, obtain diaminotriphenylamine;

[0026] 3. Put 0.5-2g of diaminotriphenylamine and 1-5g of triphosgene into the reaction vessel, add toluene reagent, stir at 0-5°C for 1-5h, then heat up to 80-150°C for ...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the molar concentration of tetrafluoronitrobenzene in the dimethyl sulfoxide solvent in step 1 is 1-4 mol / L. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the mass ratio of methoxydinitrotriphenylamine and 5wt.% Pd / C in step two is (0.5~3): (0.5~ 2). Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a polyurethane material with an electrochromic property as well as a preparation method and application of the polyurethane material, relates to the polyurethane material with the electrochromic property and the preparation method of the polyurethane material, and aims to solve the problems that common polyurethane is not liable to dissolve and difficult to process and does not have the electrochromic property. The preparation method comprises the following steps: I, adding p-Anisidine and 1-fluoro-4-nitrobenzene into a dimethyl sulfoxide solvent, and performing a reaction so as to prepare methoxyl dinitro triphenylamine; II, reducing the methoxyl dinitro triphenylamine, so as to obtain diamino triphenylamine; III, preparing isocyanate; IV, adding the isocyanate and an aromatic bisphenol monomer into dimethyl formamide, and preparing polyurethane; V, performing drying so as to obtain a polyurethane film. The polyurethane material is applied in such a way that a gel electrolytic solution is applied between the polyurethane film and an ion storing layer, and after encapsulation is performed, a polyurethane device with the electrochromic property is obtained. According to the polyurethane material, as well as the preparation method and the application thereof disclosed by the invention, triphenylamine is introduced into the polyurethane material, so that the processing solubility and the reversible electrochromic property of the polyurethane are realized.

Description

technical field [0001] The invention relates to a polyurethane material with electrochromic performance and a preparation method thereof, and the polyurethane material is used to assemble an electrochromic device. Background technique [0002] Color change is ubiquitous in nature, such as chameleons, whose skin color usually changes with changes in the environment. According to this phenomenon, people have developed materials that can achieve different color changes by applying different voltages, that is, electrochromic materials. Electrochromic materials are known as one of the most promising smart materials because of their good optical, electrical, and electrochemical properties. Now, electrochromic materials are developing rapidly and are being more and more widely used in various fields, such as displays, smart windows, anti-glare glasses, sensors and other fields. Electrochromic materials include inorganic electrochromic materials, organic electrochromic materials a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/32C08G18/38C08J5/18C09K9/02C07C265/12C07C263/10
CPCC07C213/02C07C263/10C07C265/12C08G18/3215C08G18/3812C08G18/3872C08G18/785C08J5/18C08J2375/04C09K9/02C09K2211/1433C07C217/92
Inventor 赵九蓬张坤李垚马晓轩王月敏强亮生李新刚
Owner HARBIN INST OF TECH
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