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Reversible thermochromic shape-stabilized phase change functional material and preparation method thereof

A technology of shape-setting phase change and functional materials, applied in the direction of color-changing fluorescent materials, heat exchange materials, chemical instruments and methods, etc., can solve the problems of no color memory function, poor reversible color stability, and poor shape-setting packaging effect , to achieve the effects of strong reversible color stability, good setting effect and good weather resistance

Active Publication Date: 2021-05-28
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a reversible thermochromic shape-setting phase-change functional material and a preparation method thereof. The raw materials used in the phase-change material are green, safe, non-toxic, and low in cost. Combination of phase change materials, temperature triggers simultaneous phase change process and color change process, which effectively solves the problems of no color memory function, poor shape-setting packaging effect and poor reversible color stability in the prior art

Method used

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  • Reversible thermochromic shape-stabilized phase change functional material and preparation method thereof
  • Reversible thermochromic shape-stabilized phase change functional material and preparation method thereof
  • Reversible thermochromic shape-stabilized phase change functional material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A reversible thermochromic shape-setting phase-change functional material, including the following raw materials: n-eicosane 55g, KRATON G&EFG1901 3g, INFUSE TM OBC 9530 12g, crystal violet lactone 0.3g and 4-dodecylphenol 0.9g.

[0036] The preparation method of the above-mentioned reversible thermochromic shape-setting phase-change functional material comprises the following steps:

[0037] (1) Mix n-eicosane and crystal violet lactone and sonicate at 45°C and 300W for 10 minutes, then add 4-dodecylphenol, continue to sonicate for 10 minutes, then add KRATON G&E FG1901, and sonicate for 15 minutes , to get a mixture;

[0038] (2) Transfer the mixture obtained in step (1) to an oil bath heating device, mechanically stir and melt blend at 160°C and 60rpm for 30min, and then add dry INFUSE TM OBC 9530, under the conditions of 180°C and 60rpm, mechanically stirred and melt-blended for 30 minutes, followed by casting and cooling to obtain a reversible thermochromic sha...

Embodiment 2

[0042] A reversible thermochromic shape-setting phase-change functional material, including the following raw materials: n-docosane 55g, KURARAY4033 3g, INFUSE TM 12.5 g of OBC 9530, 0.4 g of crystal violet lactone, and 1.2 g of 4-dodecylphenol.

[0043] The preparation method of the above-mentioned reversible thermochromic shape-setting phase-change functional material comprises the following steps:

[0044] (1) After mixing n-docosane and crystal violet lactone, sonicate at 55°C and 400W for 10 minutes, then add 4-dodecylphenol, continue to sonicate for 10 minutes, then add KURARAY 4033, and sonicate for 15 minutes , to get a mixture;

[0045] (2) Transfer the mixture obtained in step (1) to an oil bath heating device, mechanically stir and melt blend at 160°C and 60rpm for 30min, and then add dry INFUSE TM OBC 9530, under the conditions of 180°C and 60rpm, mechanically stirred and melt-blended for 30 minutes, followed by casting and cooling to obtain a reversible thermo...

Embodiment 3

[0049] A reversible thermochromic shape-fixing phase change functional material, including the following raw materials: OP44E phase change wax 50g, FG19013g, INFUSE TM 12 g of OBC 9530, 0.3 g of crystal violet lactone, and 0.9 g of 4-dodecylphenol.

[0050] The preparation method of the above-mentioned reversible thermochromic shape-setting phase-change functional material comprises the following steps:

[0051] (1) After mixing OP44E phase-change wax and crystal violet lactone, ultrasonically treat it at 55°C and 400W for 10 minutes, then add 4-dodecylphenol, continue ultrasonic treatment for 10 minutes, then add FG1901, and ultrasonically treat it for 15 minutes to obtain mixed solution;

[0052] (2) Transfer the mixture obtained in step (1) to an oil bath heating device, mechanically stir and melt blend at 160°C and 60rpm for 30min, and then add dry INFUSE TM OBC 9530, under the conditions of 180°C and 60rpm, mechanically stirred and melt-blended for 30 minutes, followe...

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Abstract

The invention provides a reversible thermochromic shape-stabilized phase change functional material and a preparation method thereof. The reversible thermochromic shape-stabilized phase change functional material comprises a color change system and a setting system. The color chang4 system takes crystal violet lactone as a color former, 4-dodecylphenol as a color developing agent and an alkane phase change material as a solvent; and the setting system is two thermoplastic elastomers, namely a hydrogenated styrene-butadiene block copolymer and an olefin block copolymer. The invention also provides the preparation method of the phase change material. The reversible thermochromic setting phase change functional material is high in phase change enthalpy value, adjustable in color change temperature of 18-65 DEG C, obvious in color change effect, high in thermal stability after multiple cycles and free of leakage at the temperature of 100 DEG C or below; the raw materials are cheap and easy to obtain, the preparation method is simple, the preparation process is environment-friendly and non-toxic, the flexible matrix phase change material has color changing ability, and the application range of the functional phase change material is widened; and the functional phase change material has good application prospects in the fields of heat storage and temperature control, thermochromic, heat exchange and the like.

Description

technical field [0001] The invention belongs to the technical field of reversible thermochromic shape-fixing phase-change functional materials, and specifically relates to a reversible thermochromic shape-fixing phase-change functional material and a preparation method thereof. Background technique [0002] Functional materials refer to materials that have specific functions through the actions of light, electricity, magnetism, heat, and chemistry. Functional materials are important basic materials in various fields. At present, functional materials are developing rapidly, and the demand for various types of functional materials in my country is increasing. Both reversible thermochromic materials and phase change energy storage materials are functional materials. [0003] Reversible thermochromic materials refer to materials that change from one color to another after heating, and return to their original color after cooling. The organic reversible thermochromic material m...

Claims

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Application Information

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IPC IPC(8): C09K5/02C09K9/02
CPCC09K5/02C09K9/02C09K2211/1007C09K2211/1088
Inventor 袁艳平敬瑶阁张楠钟巍董艳芳蔡雨轩
Owner SOUTHWEST JIAOTONG UNIV
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