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Organic compound shape-stable phase-change material and preparation method thereof

A shape-setting phase change material and organic technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of solid-liquid transition liquid leakage, phase change enthalpy drop, etc., to achieve large phase change enthalpy value, reuse High rate and convenient application effect

Active Publication Date: 2018-06-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, there are also significant problems in organic solid-liquid phase change materials. There is a serious leakage problem in the solid-liquid transition during the phase change process, which affects its application.
As an example to solve this problem, you can encapsulate or introduce support materials to make it shape, but the encapsulation or introduction of support materials will cause a significant drop in the phase change enthalpy

Method used

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  • Organic compound shape-stable phase-change material and preparation method thereof
  • Organic compound shape-stable phase-change material and preparation method thereof
  • Organic compound shape-stable phase-change material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Take 0.2106g of sodium alginate in a three-necked flask, add 20mL of water, and stir at 70°C for 20min to obtain a sodium alginate solution;

[0031] (2) Add 4g of PEG-800 (the mass ratio of sodium alginate to polyethylene glycol is 5:95), continue to stir for 15 minutes, and add calcium chloride solution (0.05mol / L) dropwise until a gel is formed to obtain a composite Calcium alginate gel;

[0032] (3) Vacuum drying at 40° C. for 24 hours to obtain an organic composite shape-fixed phase change material.

[0033] figure 1 It is the infrared spectrogram of organic composite shape-setting phase-change material in embodiment 1, figure 1 It is the infrared spectrogram of the organic composite shape-setting phase-change material in Example 1, wherein: a, pure polyethylene glycol, b, organic composite shape-setting phase-change material. It can be seen from the figure that the infrared peak of the composite material is compared with that of polyethylene glycol at 1026c...

Embodiment 2-4

[0035] The mass ratios of sodium alginate and polyethylene glycol (Mn=800) were changed to 50:50, 25:75, and 10:90 respectively to obtain the corresponding organic composite shape-setting phase change materials, and other conditions were consistent with those in Example 1. The measurement results show that the prepared organic composite shape-setting phase change material has a good shape-setting effect.

Embodiment 5-9

[0037] Sodium polyacrylate, potassium polymaleate, vinylpyridine, carboxymethyl cellulose, and polyvinyl alcohol are used as polymer materials requiring coordination to obtain corresponding organic composite shape-setting phase change materials, and other conditions are consistent with those in Example 1. . The measurement results show that the prepared organic composite shape-setting phase change material has a good shape-setting effect.

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Abstract

The invention relates to an organic compound shape-stable phase-change material and a preparation method thereof and belongs to the technical field of novel materials. The organic compound shape-stable phase-change material is characterized by being prepared from coordination crosslinking network macromolecule and an organic solid-liquid phase-change material, wherein according to mass percent, the coordination crosslinking network macromolecule is 1 to 50%, and the organic solid-liquid phase-change material is 50 to 99%; the coordination crosslinking network macromolecule is prepared by coordination complexing between macromolecular compound and metal ions. The organic compound shape-stable phase-change material disclosed by the invention has the advantages of simple synthesizing technology and convenience in application; the material has a high phase change enthalpy value and an excellent shape stabilized effect and no liquid leakage phenomenon in operation; the material has the advantages of simple synthesizing technology, convenience in application and wide application prospect in the field of heat energy storage and management.

Description

technical field [0001] The invention relates to an organic composite shape-setting phase-change material and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] Phase change energy storage material is a material that absorbs or releases a large amount of heat through the process of physical phase transition (solid-liquid, liquid-gas, etc.) to realize energy storage and utilization. It has the advantages of high energy storage density and strong energy storage capacity. , can effectively alleviate the conflict between space and time imbalance in energy supply, and is one of the effective ways to improve energy utilization efficiency. Among them, organic solid-liquid phase change materials have become a research hotspot in the field of phase change due to their low cost, large phase change enthalpy and small supercooling phenomenon. [0003] However, there are also significant problems in the organic solid-liquid phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 唐炳涛樊晓乔张宇昂吕荣文张淑芬
Owner DALIAN UNIV OF TECH
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