Preparation method of comb polymer phase change energy storage material

A technology of phase-change energy storage materials and comb-like polymers, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as low heat enthalpy, poor processability of comb-like phase-change materials, and narrow application range , to achieve the effect of convenient and simple operation, high yield and overcoming flow leakage
CN104356306BActive Publication Date: 2017-02-15TIANJIN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN POLYTECHNIC UNIV
Publication Date
2017-02-15

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Abstract

The invention discloses a preparation method of a comb-shaped polymer phase change energy storage material. The preparation method comprises the following steps: 1) adding polyethylene grafted maleic anhydride and alcohol with a hydroxyl active group on a terminal group, ether with a hydroxyl active group on a terminal group or mercaptan with a sulfydryl active group on a terminal group which are in a molar ratio of 1 to (0.5-5) into a reaction container, in the presence of nitrogen gas, adding an organic solvent subjected to water removal and a catalyst, and reacting for 6-12 hours at 60-120 DEG C to obtain reaction primary products; 2) cooling the reaction primary products, and washing and drying after removing the solvent to obtain the comb-shaped polymer phase change energy storage material. The preparation method disclosed by the invention is fewer in side reactions, high in yield, high in reaction speed, and convenient and simple in preparation. The prepared comb-shaped polymer phase change energy storage material has good crystallization property, thermal stability, setting performance and machinable property.
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Description

technical field

[0001] The invention relates to the field of phase change materials, in particular to a preparation method of a comb polymer phase change energy storage material. Background technique

[0002] Phase change energy storage material (PCM) refers to a substance that utilizes the heat absorbed or released when its own structure and state change to store energy. During the phase change process, a large amount of latent heat can be absorbed or released, while the temperature of the material itself remains unchanged. Therefore, the material has a wide range of applications in many fields such as intelligent temperature-adjusting clothing, solar energy utilization, building materials, and electronic devices.

[0003] At present, the commonly used low-molecular-weight phase change materials include higher aliphatic alcohols, acids, esters, long-chain aliphatic hydrocarbons, and hydrated inorganic salts, etc., but they have high fluidity during phase transitions and are...

Claims

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