Chemical method for preparing hydrous salt phase transition material with special micro and nano structure

Abstract

The invention relates to a chemical method for preparing hydrous salt phase change material with a special micro-nano-structure. In the invention, it takes the nature of its various biological systems or related artificial products as template, and makes the template to adsorb a large number of hydrated salt phase change material. Then, it removes the template through calcinations to get the micro-nano phase change material with the morphology of biological genetic. Then, it maintains its special structure, and makes the phase change material re-obtain enough crystallization water in the low temperature, and microencapsulates the hydrous salt phase change material with the complexes of polymers, carbon nano-tubes and nano-metal with a better thermal conductivity as the coating material.

Description

Technical field: [0001] The invention belongs to the field of synthesis of energy storage materials, in particular to a chemical method for preparing a hydrated salt phase transition material with a special micro-nano structure. Background technique: [0002] Since the oil crisis in the 1970s, human society has had an unprecedented crisis awareness of energy storage and utilization, which has led to a large number of scientific research work on energy, which mainly includes the development of new energy and efficient energy storage. and exploit. Although different alternative energy sources such as fuel cells, methanol, biomass, solar energy, tidal energy, wind energy, hydropower and nuclear energy have emerged and developed one after another, so far, there has not been a more ideal and more popular alternative than petroleum and related products. Energy materials and technologies. Therefore, the storage and effective utilization of efficient energy are still great challen...

AI Technical Summary

Problems solved by technology

However, water and salt phase change materials such as CaCl under the traditional technology method 2 .6H 2 O and Na 2 SO 4 .10H 2 Although O etc. have the advantages of suitable melting point, large latent heat and low price, they are rarely used in building materials, mainly because this kind of material has strong moisture absorption and low chemical stability.