Thermosensitive discoloring energy-storage material and preparation method thereof

A heat-sensitive discoloration and energy storage material technology, applied in the field of energy storage materials and their preparation, and heat-sensitive discoloration, can solve the problems of single color change, easy deterioration of color-changing materials, high discoloration temperature, etc., to overcome the high discoloration temperature and easy The effect of industrialized production and simple preparation process

Inactive Publication Date: 2012-12-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantages of most current reversible thermochromic energy storage materials are that the color change temperature is high and the color change is single (mostly from a colored body to a colorless body), and the phase transition temperature of the energy storage material is too high or too low, so according to The need to prepare heat-sensitive color-changing energy storage materials with low-temperature color change and color change diversity is the main direction of devel

Method used

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  • Thermosensitive discoloring energy-storage material and preparation method thereof
  • Thermosensitive discoloring energy-storage material and preparation method thereof
  • Thermosensitive discoloring energy-storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] (1) Weigh 8.884g of tetradecyl alcohol and 1.116g of cetyl alcohol as energy storage materials and place them in a container, dissolve them at 80°C, then add 0.2g of dispersed cationic pink, 0.6g of crystal violet lactone and 3.0g of bisphenol A and seal it well, stir in a water bath at 80°C for 60 minutes to make a core material solution;

[0041] (2) Take 2.00g of melamine, 3.86g of formaldehyde solution and 22.5ml of distilled water, mix and stir evenly at a temperature of 70°C, adjust the pH value of the mixture to 8.5-9 with triethanolamine, and then react for 30 minutes until it is colorless and transparent shape, that is, to make a prepolymer, take it out and store it at 50°C for later use;

[0042] (3) Take 1.38g styrene-maleic anhydride copolymer and 25ml distilled water in a three-necked flask, add 0.2gNaOH, mix well, then adjust the pH value of the solution to 4-5 with 10% citric acid, and put Stirring and reacting at a temperature of ℃ for 1 h; then adding ...

Embodiment 2

[0047] (1) Weigh 7.796g of tetradecyl alcohol and 2.204g of cetyl alcohol as the energy storage material and put them in a container, dissolve them at 80°C, then add 0.2g of dispersed cationic bright yellow, 0.6g of crystal violet lactone and 3.0g of bisphenol A and seal it well, stir in a water bath at 80°C for 60 minutes to make a core material solution;

[0048] (2) Take 2.00g of melamine, 3.86g of formaldehyde solution and 22.5ml of distilled water, mix and stir evenly at a temperature of 70°C, adjust the pH value of the mixture to 8.5-9 with triethanolamine, and then react for 30 minutes until it is colorless and transparent shape, that is, to make a prepolymer, take it out and store it at 50°C for later use;

[0049] (3) Take 1.4g styrene-maleic anhydride copolymer and 25ml distilled water in a three-necked flask, add 0.2gNaOH, mix thoroughly, then adjust the pH value of the solution to 4-5 with 10% citric acid, and put Stirring and reacting for 1 h at a temperature of ...

Embodiment 3

[0054] (1) Weigh 6.735g of tetradecyl alcohol and 3.265g of cetyl alcohol as energy storage materials and place them in a container, dissolve them at 80°C, then add 0.2g of dispersed cationic pink, 0.6g of crystal violet lactone and 3.0g of bisphenol A and seal well, stir in 80°C water bath for 60min, thus make core material solution;

[0055] (2) Take 2.00g of melamine, 3.86g of formaldehyde solution and 22.5ml of distilled water, mix and stir evenly at a temperature of 70°C, adjust the pH value of the mixture to 8.5-9 with triethanolamine, and then react for 30 minutes until it is colorless and transparent shape, that is, to make a prepolymer, take it out and store it at 50°C for later use;

[0056] (3) Take 1.37g styrene-maleic anhydride copolymer and 25ml distilled water in a three-necked flask, add 0.2gNaOH, mix thoroughly, and then adjust the pH value of the solution to 4-5 with 10% citric acid. Stirring and reacting at a temperature of ℃ for 1 h; then adding 0.968 g of...

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Abstract

The invention discloses a thermosensitive discoloring energy-storage material and a preparation method of the thermosensitive discoloring energy-storage material, belonging to the field of functional composite materials. The invention aims at solving the technical problem of forming a thermosensitive discoloring energy-storage microcapsule by using crystal violet lactone as a leuco body, using bisphenol A as a color developing agent, and using the compound of tetradecanol and hexadecanol as a solvent; mixing the leuco body, the color developing agent, the solvent and an appropriate amount of dispersant cationic dyes to form a core material; using a melamine resin formed by formaldehyde-melamine as a wall material; and covering the core material by the wall material. The thermosensitive discoloring energy-storage material disclosed by the invention can not only reversibly discolor along with the change of temperature, but also absorb and dissipate energy; and the thermosensitive discoloring energy-storage material is compact in structure, uniform in particle size and long in service life, and can be widely used in the fields of civil textiles, industry cloths, construction and building materials, printing, anti-faking and the like.

Description

technical field [0001] The invention relates to a heat-sensitive discoloration and energy storage material with dual responsiveness to ambient temperature and a preparation method thereof. Endothermic and exothermic reactions occur. Background technique [0002] Thermochromic material is a material that changes color with temperature. When the temperature rises, its color changes; when the temperature decreases, the color returns. There are many reasons for thermal discoloration, such as crystal transformation and structural transformation of substances at different temperatures. According to the nature of discoloration, it can be divided into reversible discoloration and irreversible discoloration. Color-changing materials (dyes) for textiles mainly change reversibly. Since the 1980s, foreign thermochromic materials tend to develop towards low temperature and reversibility. Low-temperature reversible thermochromic materials are widely used in many fields of daily life, ...

Claims

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Application Information

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IPC IPC(8): C09K9/00C09K5/06B01J13/02
Inventor 马晓光郑喜玲吴智磊李青
Owner TIANJIN POLYTECHNIC UNIV
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