Preparation method of hydrous salt-metal organic framework composite phase change material

Abstract

The invention belongs to the field of nano-composites and composite phase change materials and particularly relates to a preparation method of a hydrous salt-metal organic framework composite phase change material. The specific scheme is as follows: firstly, proper metal salt, a proper ligand and a proper inorganic phase change material base material are selected, and the size of pore canals of a metal organic framework is designed and regulated according to the type of core materials, so that to-be-supported phase change core materials are better matched; the metal salt, the ligand, the inorganic phase change material and an additive are blended, heat preservation is performed for a period under an airtight condition, then the mixture is supplemented with a proper amount of water, and thus the hydrous salt-metal organic framework composite phase change material is obtained. The preparation method has the advantages as follows: the heat storage property of the prepared composite phase change material can be improved, and problems of phase change separation, supercooling degree and the like can be effectively avoided; the compound phase change material prepared with the method is excellent in heat transfer property and good in cyclic stability; the preparation process of the compound phase change material requires simple technology, is finished in one step, is free of by-products, requires no after-treatment and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of composite materials and composite phase-change materials, and in particular relates to a preparation method of metal-organic framework-based composite phase-change materials. Background technique [0002] The decline of fossil fuels and the urgent demand for energy make energy shortage an important issue that attracts worldwide attention. The development of new energy to replace traditional fossil fuels is an inevitable trend to solve the above problems. At present, humans have developed and put into use some clean energy sources such as solar energy, wind energy, and ocean energy. However, this kind of energy often has defects such as discontinuity and volatility, which increases the limitation of use and cannot meet the requirements of continuous use around the clock. Phase change energy storage technology realizes energy absorption and release through phase change of phase change materials (PCMs), and at the sa...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to develop a new type of composite phase change material through the in-situ synthesis method, so that this type of phase change material can effectively solve the problems of supercooling and phase separation in inorganic phase change materials, and at the same time, it has a simple production process. , easy to prepare, etc.

Images