Preparation method of phase-change energy-storage material

Abstract

The invention provides a preparation method of a phase-change energy-storage material. The preparation method comprises the steps of uniformly mixing, by mass, 8.25-16.75 parts of surfactant and 8.25-16.75 parts of emulsifier, and obtaining a first mixture; picking and grinding, by mass, 58.75-78.50 parts of polybasic carboxylic acid or a derivative of polybasic carboxylic acid into powder, uniformly mixing the power with the first mixture, placing the mixture into a reactor, conducting stirring and a reaction for 30-180 minutes at the temperature of 80-150 DEG C, and obtaining a second mixture; adding, by mass, 2.50-6.50 parts of a nucleating agent and 2.50-6.50 parts of thickener, mixing the ingredients uniformly, cooling the ingredients to the room temperature, and obtaining the phase-change energy-storage material. The phase-change energy-storage material prepared through the preparation method is low in price and good in cyclic stability.

Description

technical field [0001] The technical field of material synthesis of the present invention, especially the application of phase change energy storage materials. Background technique [0002] Phase-change energy storage materials can store temporarily unused energy and release it when needed, which can alleviate the contradiction between energy supply and demand and save energy. Utilizing this characteristic of phase change energy storage materials, it can be used in the fields of air conditioning energy saving, solar energy, aerospace, and electric power. Since the performance of a single phase change material is unstable during use, it cannot meet the requirements of practical applications. The improvement of phase change materials and the research on composite phase change energy storage materials have become the focus of research in recent years. [0003] According to the way of energy storage, energy storage materials can be roughly divided into three categories: sensibl...

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Problems solved by technology

[0015] The above examples mainly introduce the preparation method and some application prospects of microcapsule phase change energy storage materials. At present, the existing phase change energy storage materials include: hydrated salts such as Na 2 SO 4 10H 2 O, MgCl 2 ·6H 2 O, etc., organic compounds such as paraffin, polyols and other phase change materials have problems such as low heat storage density, high price, and poor cycle stability.

[0016] However, although hydrated salt-organic composite microcapsule phase change materials can be obtained through modification, the problems of supercooling, phase separation and poor cycle stability of the hydrated salt itself still cannot be solved.

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