A kind of color-changing gel resin curable by ultraviolet light, its synthesis method and the color-changing and fading method of gel
A technology of gel resin and ultraviolet light, which is applied in the fields of UV-curable color-changing gel resin and its synthesis, as well as the discoloration and fading of gel, which can solve the problems of slow gel speed and long time, and achieve low cost, The effect of fast response and simple preparation method
Active Publication Date: 2020-10-30
HARBIN INST OF TECH
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Problems solved by technology
[0004] The present invention aims to solve the technical problem of slow gel speed and long time in the existing sol-gel preparation method of color-changing gel, and provides a color-changing gel resin curable by ultraviolet light and its synthesis method and gel method. Change of color, discoloration method
Method used
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specific Embodiment approach 1
[0024] Specific embodiment 1: The UV-curable color-changing gel resin of this embodiment consists of 100 parts of polyvinyl alcohol (PVA), 30-50 parts of amino acid, 0.5-1 part of catalyst, 15-50 parts of modified It is made of activating agent, 1-5 parts of photoactive monomer, 1-5 parts of photoinitiator and 1000-1300 parts of solvent.
specific Embodiment approach 2
[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the amino acid is glutamic acid, lysine, aspartic acid or arginine; other aspects are the same as Embodiment 1.
specific Embodiment approach 3
[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the catalyst is N-dimethylaminopyridine, pyridine or dicyclohexylcarbodiimide; the others are the same as Embodiment 1 or 2.
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The invention relates to color change gel, a synthesis method of the color change gel as well as color change and color fading methods, in particular to ultraviolet-curable color change gel resin, a synthesis method of the color change gel resin and color change and color fading methods of gel, and solves the technical problems that an existing sol-gel preparation method of color change gel is lowin gelling speed and long in time. The color change gel resin is prepared from 1 polyvinyl alcohol, amino acid, a catalyst, a modifier, a photoactive monomer, a photoinitiator and a solvent. Polyvinyl alcohol is added to the solvent to be subjected to a grafting reaction with amino acid, then, the catalyst and the modifier are added sequentially, the photoinitiator and the photoactive monomer areadded after dialysis, and the ultraviolet-curable color change gel resin is obtained. The resin can be cured into gel under ultraviolet irradiation, and the gel can change color after being soaked ina metal ion solution, can fade after being soaked in a fading solution and can be used as a camouflage material.
Description
technical field [0001] The invention relates to a color-changing gel, a synthesis method thereof, and a color-changing and fading method. Background technique [0002] Color-changing materials refer to substances that change color as the external environmental conditions change. According to the different factors that cause discoloration, the discoloration materials can be divided into photochromism, electrochromism, thermochromism and acid-base discoloration, moisture discoloration and pressure discoloration materials, etc. That is to say, the color-changing material has the characteristics of reversible change in structure with different light intensity, different temperature of atmospheric environment, different atmospheric humidity, different pressure, etc., which causes reversible changes in its absorption spectrum of visible light and reversible changes in color. . As an intelligent chromogenic material, it has a wide range of applications, such as thermosensitive re...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08F261/04C08F222/38C08F8/00C08F8/30
CPCC08F8/00C08F8/30C08F261/04C08F222/385
Inventor 姜再兴徐丽娟
Owner HARBIN INST OF TECH
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