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A kind of photochromic fluorocarbon resin and its preparation method and application

A fluorocarbon resin and photochromic technology, which is applied in the direction of color-changing fluorescent materials, chemical instruments and methods, coatings, etc., can solve the problems of not being resistant to wiping, not being resistant to organic solvents, and not being able to achieve text communication, etc., to achieve extremely easy The effect of erasing

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing photochromic resin skeleton material is polyvinyl alcohol, which is not suitable for whiteboard coating, because it is not resistant to organic solvents and wiping, so it cannot be used for repeated writing and erasing with oil-based pens; or Due to the poor thermal stability of the photochromic compound used, the text written by light will fade quickly, failing to achieve the purpose of writing and communicating with light
Products that graft diarylethene onto the fluorocarbon resin skeleton have not yet appeared
In addition, none of the currently reported resins and polymers with photochromic properties involve fluorocarbon resins.

Method used

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  • A kind of photochromic fluorocarbon resin and its preparation method and application
  • A kind of photochromic fluorocarbon resin and its preparation method and application
  • A kind of photochromic fluorocarbon resin and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A kind of photochromic fluorocarbon resin, the fluorocarbon resin is grafted by diarylethene photochromic material 9,10-bis(2,5-dimethylthiophene)phenanthrene-2,7-diformyl chloride Prepared by modification, the preparation process includes the following raw materials: 100g fluorocarbon resin (50% solid content), 0.243g photochromic carboxylic acid material 9,10-bis(2,5-dimethylthiophene)phenanthrene-2 , 7-dicarboxylic acid, 500mL dichloromethane, 0.5mL oxalyl chloride, catalytic amount of N,N-dimethylformamide.

[0041] The specific steps of the preparation method are as follows:

[0042] (1) Preparation of the acid chloride solution of the color-changing functional group: referring to the literature (Junjie He et al, J. Mater. Chem. C, 2014, 2, 7531-7540), 0.243g of the photochromic carboxylic acid material 9,10-di( Add 2,5-dimethylthiophene)phenanthrene-2,7-dicarboxylic acid into a single-necked flask, add 50mL of dichloromethane, add 0.5mL of oxalyl chloride and cat...

Embodiment 2

[0046] A kind of photochromic fluorocarbon resin, the fluorocarbon resin is grafted by diarylethene photochromic material 9,10-bis(2,5-dimethylthiophene)phenanthrene-2,7-diformyl chloride Prepared by modification, the preparation process includes the following raw materials: 10g fluorocarbon resin (50% solid content), 0.243g photochromic carboxylic acid material 9,10-bis(2,5-dimethylthiophene)phenanthrene-2 , 7-dicarboxylic acid, 50mL dichloromethane, 0.5mL thionyl chloride, catalytic amount of N,N-dimethylformamide.

[0047] The specific steps of the preparation method are as follows:

[0048](1) Preparation of the acid chloride solution of the color-changing functional group: referring to the literature (Junjie He et al, J. Mater. Chem. C, 2014, 2, 7531-7540), 0.243g of the photochromic carboxylic acid material 9,10-di( Add 2,5-dimethylthiophene)phenanthrene-2,7-dicarboxylic acid into a single-necked flask, add 10 mL of dichloromethane, add 0.5 mL of thionyl chloride and a ...

Embodiment 3

[0052] A photochromic fluorocarbon resin coating film, which is obtained by curing the photochromic fluorocarbon resin prepared in Example 1 of the present invention with toluene diisocyanate. The raw materials include: 10 g of photochromic fluorocarbon resin, 0.38 g of toluene diisocyanate g. Its preparation method specifically comprises the following steps:

[0053] 1. Add 0.38 g of toluene diisocyanate to 10 g of the photochromic fluorocarbon resin, and stir evenly to obtain a mixed material;

[0054] 2. Vacuumize the resulting mixed material until the air bubbles are completely removed;

[0055] 3. The material obtained in step 2 is flat and clean glass or iron sheet to form a thin film by scraping, placed horizontally, and leveled to form a film;

[0056] 4. The coating film obtained in step 3 was ventilated, dried and cured for 7 days to obtain the photochromic fluorocarbon resin coating film.

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Abstract

The invention belongs to the field of photochromic high polymer materials and discloses a photochromic fluorocarbon resin as well as a preparation method and application thereof. The photochromic fluorocarbon resin is prepared by carrying out graft modification on fluorocarbon resin by a diarylethene photochromic material. The photochromic fluorocarbon resin can form polyurethane high polymer under action of isocyanate and the polyurethane high polymer is solidified to prepare a photochromic fluorocarbon resin film. The photochromic fluorocarbon resin film can smoothly realize photochromic reaction, and then characters can be written through metachromatism. The photochromic fluorocarbon resin is especially suitable for preparing a coating material requiring photochromic characteristic, is used for the fields of information writing, real-time monitoring of leakage of ultraviolet light and the like, and can be used for places needing a plurality of writing method requirements.

Description

technical field [0001] The invention belongs to the field of photochromic polymer materials, and in particular relates to a photochromic fluorocarbon resin and a preparation method and application thereof. Background technique [0002] Fluorocarbon resin (FEVE) is a kind of fluorine-containing organic high molecular polymer, which has super strong chemical stability and aging resistance, so it is widely used in the production of stain-resistant and weather-resistant special coatings. [0003] Organic photochromic materials are a class of organic compounds that can control their absorption spectrum under different lighting conditions, and then adjust their color. There are many kinds of photochromic materials, such as spiropyran, fulgid anhydride and oxazine (SatoshiKawata, et al, Chem.Rev.2000, 100, 1777-1788, patents CN100434430C and CN101671467B), diarylethene photochromic Due to their good thermal stability and fatigue resistance, chromogenic compounds have attracted ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/24C08F216/18C08F8/34C09D127/12C09D129/10C09D7/12C09K9/02
Inventor 曾和平何俊杰
Owner SOUTH CHINA UNIV OF TECH
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