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Preparation method of organic gel composite phase change material

A composite phase change material and organogel technology, applied in the field of preparation of organogel composite phase change materials, can solve the problems of low loading of composite phase change materials, limited practical application, narrow pore size distribution, etc., to avoid leakage, Wide application range and simple process effect

Inactive Publication Date: 2016-05-25
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the carrier materials used have shortcomings such as small specific surface area, small pore volume, and narrow pore size distribution, which lead to low loading capacity and low latent heat value of composite phase change materials, which limit its practical application.

Method used

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  • Preparation method of organic gel composite phase change material
  • Preparation method of organic gel composite phase change material
  • Preparation method of organic gel composite phase change material

Examples

Experimental program
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Effect test

Embodiment example 1

[0029] (1) Add 0.11g of tetramural aldehyde and 0.0657g of 2,3,5,6-tetramethyl-1,4-phenylenediamine into 5mL of 1,4-dioxane and ultrasonically disperse until transparent, then add 0.4mL of 3M acetic acid solution, shake well, put it in an oven at 100°C, let it stand for 24h, and wash the product repeatedly with absolute ethanol to obtain Cog-4CH 3 gel.

[0030] (2) A certain amount of phase change core material PEG6000 (PEG6000 accounts for PEG6000 and Cog-4CH 3 The percentages of the total mass of the gel are respectively 50%, 60%, 70%, 80%, and 85%) dissolved in 10mL of ethanol, uniformly dispersed and then added to the container of the gel material, left to stand at 60°C for 8h, and finally The covalent organogel-based composite phase change material is obtained after solvent removal.

Embodiment example 2

[0032] (1) Add 0.11g of tetrawall aldehyde and 0.0545g of 2,5,-dimethyl-p-phenylenediamine into 5mL of 1,4-dioxane and ultrasonically disperse until transparent, then add 0.4mL of 3M acetic acid solution and shake well Then put it in an oven at 100°C, let it stand for 24h, and wash the product repeatedly with absolute ethanol to obtain Cog-CH 3 gel.

[0033] (2) A certain amount of phase change core material PEG4000 (PEG4000 accounts for PEG4000 and Cog-CH 3 The percentages of the total mass of the gel are respectively 50%, 60%, 70%, 80%, and 85%) dissolved in 10mL of ethanol, uniformly dispersed and then added to the container of the gel material, left to stand at 60°C for 8h, and finally The covalent organogel-based composite phase change material is obtained after solvent removal.

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Abstract

The invention belongs to the field of composite phase change materials and particularly relates to a preparation method of an organic gel composite phase change material. The preparation method comprises the following steps: preparing a covalent organic gel carrier first; selecting different ligands according to the size and type of a core material so as to better match the to-be-loaded phase change core material; dispersing the prepared phase change core material solution in the organic gel carrier material by a solution impregnation method; adsorbing the phase change core material by the acting force of a gel pore channel; and removing the solvent at a relatively high temperature to obtain the covalent organic gel composite phase change material. The preparation method provided by the invention has the following advantages that 1) a novel organic gel composite phase change material is developed; 2) the prepared composite phase change material can effectively avoid the leakage problem of a phase change core material, and the core material is widely selected and has high energy storage density; and the composite phase change material is suitable for the energy storage and temperature control in different temperature intervals while the application range is wide; and 3) the prepared composite phase change material has the advantages of excellent heat transfer property, good circular stability and simple process and is suitable for large-scale production.

Description

Technical field: [0001] The invention belongs to the field of composite phase change materials, and in particular relates to a preparation method of organic gel composite phase change materials. Background technique: [0002] Replacing traditional fossil energy with renewable energy such as solar energy, wind energy, geothermal energy, and ocean energy is the only way for sustainable energy development. At present, the effective utilization rate of these new energy sources is low, and there is a time difference between supply and demand, which limits their practical application. Therefore, it is particularly urgent to develop new energy storage technologies to realize efficient and reasonable utilization of new energy. As the core and key of energy storage technology, phase change materials (PhaseChangeMaterials, PCMs) can absorb / release a large amount of heat energy during the phase change process, which can realize the storage of heat energy and the transfer of energy in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 谭丽杨明汤甲王戈高鸿毅王静静齐悦陈星宇余方
Owner UNIV OF SCI & TECH BEIJING
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