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A kind of photochromic coating liquid and its application

A photochromic and coating fluid technology, applied in coatings, color-changing fluorescent materials, optics, etc., can solve the problems of reduced color-changing space, reduced color-changing coating space, and low color-changing efficiency

Active Publication Date: 2020-08-25
JIANGSU SHIKEXINCAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spin coating method is to add the prepared discoloration solution into the tank of the spin coater after the substrate is made, and after fully mixing, fix the substrate on the spin coater for centrifugal rotation and solidify it to form a discoloration effect. Compared with the substrate method, the spin-coating method has the advantage of high technical content. In theory, any product can be made, and the color difference of the product is small. The disadvantage is that the space of the color-changing coating is relatively reduced, and the color-changing space is reduced. Therefore, the development of lens coating technology with high photochromic efficiency is an important development direction in the future

Method used

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  • A kind of photochromic coating liquid and its application
  • A kind of photochromic coating liquid and its application
  • A kind of photochromic coating liquid and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Embodiment 1: Preparation of photochromic nanocomposite microspheres, photochromic coating liquid and photochromic lens

[0094] (1) Preparation of photochromic nanocomposite microspheres:

[0095] (1) Add 9.7g of zinc nitrate hexahydrate to 1600g of ethylene glycol, stir evenly, add 1.6g of sublimated sulfur powder, heat up to 150°C for 24 hours, cool to 55°C, add 85g of mercaptoethanol dropwise and stir; Then add 6.7 g of the spiropyran photochromic compound represented by formula III, stir vigorously for 30 minutes, continue to cool to room temperature, filter and wash the precipitate, and dry it in a vacuum oven at 65°C for 8 hours to obtain spiropyran coating Zinc sulfide nanospheres;

[0096] (2) Add 8g of spiropyran-coated zinc sulfide nanospheres and 8.2g of diphenylmethane-4,4'-diisocyanate (MDI) to 1000g of butyl acetate solvent, stir well, and then add 7g to mix the reaction agent (1.2g n-butanol, 5.8g polytetrahydrofuran ether glycol), 18g Tween80, the tem...

Embodiment 2

[0111] (1) Preparation of photochromic nanocomposite microspheres:

[0112] (1) Add 6.5g of zinc nitrate to 1600g of ethylene glycol, stir evenly, add 1.7g of sublimated sulfur powder, heat up to 150°C for 24 hours, cool to 55°C, add 70g of mercaptoethanol dropwise and stir; then add 3.5 g of spiropyran photochromic compound (I), vigorously stirred for 30 minutes, cooled to room temperature, filtered and washed the precipitate, and dried in a vacuum oven at 65° C. for 8 hours to obtain spiropyran-coated zinc sulfide nanospheres;

[0113] (2) Get 5.5g spiropyran-coated zinc sulfide nanospheres, 5g MDI is added in 1000g butyl acetate solvent, after stirring evenly, add 5.5g mixed reactants (1.0g n-butanol, 4.5g polytetrahydrofuran ether) Diol), 20g Tween80, keep the temperature at 25°C, prepolymerize at 500r / min for 50min, add 6g chain extender (4.5g ethylene glycol, 1.5g ethylenediamine), 0.1g DBTL, heat to 65°C Polymerization chain extension reaction was carried out for 15 mi...

Embodiment 3

[0122] (1) Preparation of photochromic nanocomposite microspheres:

[0123] (1) Add 11g of zinc nitrate hexahydrate to 1600g of ethylene glycol, stir evenly, add 3g of sulfur powder, heat up to 145°C for 24 hours, cool to 50°C, add 92g of mercaptoethanol dropwise and stir; then add 8g The spiropyran photochromic compound (I), vigorously stirred for 35 minutes, continued to cool to room temperature, filtered and washed the precipitate, and dried in a vacuum oven at 60°C for 9 hours to obtain spiropyran-coated zinc sulfide nanospheres;

[0124] (2) Get 10g spiropyran-coated zinc sulfide nanospheres, 10.8g m-xylylene diisocyanate (XDI) and join in 1000g butyl acetate solvent, after stirring evenly, add 7.4g mixed reaction agent (1.0 g n-butanol, 6.4g polytetrahydrofuran ether glycol), 16g Tween80, keep the temperature at 25°C, prepolymerize at 600r / min for 60min, add 8g chain extender (5.5g ethylene glycol, 2.5g ethylenediamine) , 0.2g DBTL, heated to 60°C for polymerization cha...

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Abstract

The invention relates to a photochromic coating liquid and applications thereof. The coating liquid contains a polyurethane / spiropyran / zinc sulfide compound multilayer photochromic material, the kernel of the polyurethane / spiropyran / zinc sulfide compound multilayer photochromic material is zinc sulfide mesopore nanometer microspheres, a middle layer of the polyurethane / spiropyran / zinc sulfide compound multilayer photochromic material is a photochromic layer made from a spiropyran compound, and a shell is made from polyurethane; the outer diameter of each compound microsphere is 50-350nm, wherein the diameter of each zinc sulfide mesopore nanometer microsphere is 30-250nm, the middle layer is 5-25nm thick, and the shell is 5-25nm thick. The coating liquid can be used for preparing a photochromic coating; the photochromic coating can be changed to be colorful from being colorless under the irradiation of ultraviolet rays, and also can be rapidly faded to be colorless after the ultraviolet rays disappear, thus having the advantages of being strong in anti-fatigue property, good in stability, rapid in color changing speed, and the like.

Description

technical field [0001] The invention belongs to the technical field of photochromism, and in particular relates to an optical material color-changing coating liquid containing photochromic nanocomposite microspheres and an application thereof. Background technique [0002] Photochromism refers to certain compounds under the action of light of a certain wavelength and intensity, as the absorption spectrum changes, the molecular structure of the material changes, resulting in a change in the absorbance and color of the material, and this change is generally reversible , a functional material that can automatically return to its original state when the light is stopped, as a new material in the subdivision of optical materials, it has important roles in high-tech fields such as optical lenses, optical information storage, molecular switches, and anti-counterfeiting identification. Value. It has been more than 100 years since human beings discovered the phenomenon of photochrom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/62C09D7/63C09D7/65C07D491/107C07D311/94C09K9/02B01J13/18C08G18/38C08G18/48C08G18/28C08G18/12C08G18/32C08J7/04G02C7/10C08L75/04
CPCB01J13/185C07D311/94C07D491/107C08G18/12C08G18/282C08G18/3206C08G18/3868C08G18/4854C08J7/0427C08J2375/04C08J2475/04C08K2201/011C09D175/04C09K9/02C09K2211/1029C09K2211/1088G02C7/102C08G18/3228C08L83/04C08K9/08C08K9/04C08K7/18
Inventor 王明华张鹤军范为正纪立军乔振安司云凤王志飞郑永华薛晓花吴潇刘洋
Owner JIANGSU SHIKEXINCAI CO LTD
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