A kinetically adjustable color-changing material and its preparation method

Abstract

The invention relates to the technical field of preparation of color-variable materials, and particularly relates to a dynamically-adjustable color-variable material and a preparation method thereof. The preparation method adopts the following technical scheme: step 1, using dispersoids as nano-particles with elemental silver exposed on surfaces, and a colloid aqueous solution containing a colloid stabilizer as an initial aqueous solution of which the biggest extinction in a range of 380-850nm is not less than 0.1cm<-1>, wherein the nano-particles include (but are not limited to) silver nano-spheres, nano-rods, nano-sheets, and various nano-structures using nano-structures of elemental silver, palladium and the like as cores and the elemental silver as a shell; step 2, successively adding an acidity regulator, an anti-freezing agent, a viscosity modifier, and a gelatinizing agent into the initial aqueous solution in a random order, and mixing the materials fully to form a colloid solution. The dynamically-adjustable color-variable material utilizes a self-evolving active nano material, is rich in color changes and small in volume, has a large dynamically-adjustable range capable of covering metamorphic kinetic parameters of most metamorphic products, and is low in cost.

Description

【Technical field】 [0001] The invention relates to the technical field of color-changing materials preparation, in particular to a kinetically adjustable color-changing material and a preparation method thereof. 【Background technique】 [0002] With the development of society, the application of color-changing materials is becoming more and more extensive. The nature of the color-changing material is that the color-changing kinetics can be adjusted in a wide range. The kinetics of discoloration mainly refers to two parameters, namely discoloration rate (or discoloration time, the two are reciprocals of each other) and activation energy, both of which can be adjusted in a wide range. There are the following problems in the use and preparation of traditional color-changing materials: First, the display technology of SensorMark uses a dye diffusion process, so the volume is relatively large. The second is that OnVu's display technology adopts the dye fading process, and its col...

AI Technical Summary

Problems solved by technology

There are the following problems in the use and preparation of traditional color-changing materials: First, the display technology of SensorMark uses a dye diffusion process, so the volume is relatively large

The second is that OnVu’s display technology uses a dye fading process, and its color change is relatively simple; the dynamic adjustable range of the above two technologies is relatively small, and the cost is high

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