Organic composite phase change energy storage material and preparation method and application thereof

A technology of composite phase change and energy storage materials, applied in the field of organic composite phase change energy storage materials and their preparation, can solve the problems of high requirements for thermal insulation measures, difficult long-term storage of heat, etc. Simple, long recovery half-life effect
CN110669476AInactive Publication Date: 2020-01-10GUANGDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Publication Date
2020-01-10
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an organic composite phase change energy storage material and a preparation method and application thereof. The material consists of fatty alcohol and an azobenzene compound ina mass ratio of 55-75: 25-45. The azobenzene compound in the organic composite phase change energy storage material disclosed by the invention can change the structure from a trans configuration to acis configuration under the ultraviolet light irradiation condition, changes the steric repulsion force and dipole interaction, can change the phase state of the organic phase change material, enables the crystallization temperature of the organic composite phase change energy storage material to be lower than that of the original organic composite phase change energy storage material, and has alonger recovery half life, thereby obtaining the organic composite phase change energy storage material with adjustable crystallization temperature and energy storage density, adjusting the crystallization temperature, realizing long-term supercooling stability, and being prepared into a medium-term and long-term heat storage material for application.
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Description

technical field

[0001] The invention relates to the technical field of solar heat storage, and more specifically relates to an organic composite phase change energy storage material and a preparation method thereof, which has broad application prospects in medium and long-term thermal energy storage. Background technique

[0002] Thermal energy storage offers great potential for a wide range of energy technologies. Phase change materials provide state-of-the-art thermal storage for high latent heat. When the phase change material is heated above the melting point, it stores latent heat energy, and when the temperature drops below the freezing point, it releases the stored energy and returns to the original phase state. Organic phase change materials, such as paraffin, fatty acids, fatty alcohols, and polyethylene glycols exhibit large latent heat of phase change and broad melting and freezing points. However, traditional organic phase change materials suffer from severe he...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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