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Preparation of reversible thermo-color material, and preparation and applications of thermo-color solution system thereof

A thermal discoloration and solution technology, applied in the direction of color-changing fluorescent materials, applications, home appliances, etc., to achieve the effect of easy-to-obtain materials, wide application and easy implementation

Inactive Publication Date: 2015-08-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been more and more studies on the thermochromic materials of supramolecular compounds formed by nickel salts, chromium salts and organic nitrides, but there are very few studies on the thermochromic effects of quaternary ammonium salts and metal salt complexes. Thermochromic Effect of Choline Chloride-Nickel Chloride Complex in Ionic Liquid

Method used

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  • Preparation of reversible thermo-color material, and preparation and applications of thermo-color solution system thereof
  • Preparation of reversible thermo-color material, and preparation and applications of thermo-color solution system thereof
  • Preparation of reversible thermo-color material, and preparation and applications of thermo-color solution system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] According to Cetyl Trimethyl Ammonium Chloride C 19 H 42 The molar ratio of ClN (CTAC) to metal nickel salt is 2:1. Weigh 1.28g CTAC and 0.475g nickel chloride hexahydrate NiCl 2 .6H 2 O, dissolved in 5mL of ethanol solution, shake to completely dissolve, then heat to evaporate the ethanol until nearly dry, cool, overnight until the ethanol is completely volatilized, to obtain a green translucent gel, which is a reversible thermochromic material. When the gel-like solid is heated to 50-80°C, the color of the solid changes from green translucent to dark blue opaque.

Embodiment 2

[0024] According to Cetyl Trimethyl Ammonium Chloride C 19 H 42 The molar ratio of ClN (CTAC) to metal nickel salt is 5:1. Weigh 1.28g CTAC and 0.190g nickel chloride hexahydrate NiCl 2 .6H 2 O, dissolve in 5mL ethanol solution, shake to completely dissolve, then heat to evaporate the ethanol until nearly dry, cool, overnight until the ethanol is completely volatilized, to obtain a grass-green translucent gel, which is a reversible thermochromic material. When the gel-like solid is heated to 50-80°C, the color of the solid changes from grass green translucent to dark blue opaque.

Embodiment 3

[0026] According to Cetyl Trimethyl Ammonium Chloride C 19 H 42 The molar ratio of ClN (CTAC) to metal chromium salt is 2:1. Weigh 1.28g CTAC and 0.5326g chromium chloride hexahydrate CrCl 3 .6H 2 O, dissolved in 5mL ethanol solution, shake to completely dissolve, then heat to evaporate the ethanol until nearly dry, cool, overnight until the ethanol is completely volatilized, then a dark green gel is obtained, which is a reversible thermochromic material. When the gel-like solid is heated to 50-80°C, the color of the solid changes from dark green to dark purple.

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Abstract

The invention discloses preparation of a reversible thermo-color material, and preparation and applications of a thermo-color solution system of the reversible thermo-color material. The reversible thermo-color material is prepared by the following steps: mixing cetyl trimethyl ammonium chloride (C19H42ClN) and metal salts according to a mole ratio of 2:1-5:1 in a solvent (water or ethanol), stirring to completely dissolving C19H42ClN and metal salts under heating to obtain a colloidal solid namely the reversible thermo-color material having a thermochromic temperature of 50 to 75 DEG C. The preparation of the reversible thermo-color material is simple, the reversible thermo-color material is green, environment-friendly, stable, and reliable, the color change is clear, the raw materials are easily available, and the preparation is easy. The reversible thermo-color material can be dissolved in N,N-dimethyl formamide to form a thermo-color solution system, the system has the advantages of high sensitivity and adjustable temperature, moreover, the color change is reversible, the effect can last for a long time, and the thermochromic temperature is in a range of 20 to 100 DEG C.

Description

Technical field [0001] The invention relates to the technical field of material preparation, in particular to the preparation of a reversible thermochromic material and the preparation and application of a thermochromic solution system. Background technique [0002] With the progress of society and the development of industry, the rapid growth of energy consumption has become a major global issue affecting the safety of the social environment and the smooth operation of the economy. Solar energy has long been considered a renewable clean energy. Therefore, effective use of solar energy has become the key to alleviating the problem of excessive energy consumption. Since most of the sun's rays directly illuminate the surface of the object, the temperature is usually below 100°C. Therefore, it is of great significance to develop a new material system that can store or utilize this low-temperature environment heat. Thermochromic materials refer to functional materials whose color c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02C08L27/06C09D11/50
Inventor 肖敏沈浩梁栋莫善军鞠英辉张景
Owner SUN YAT SEN UNIV
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