GRAPHITE ADSORPTION PHASE CHANGE ENERGY-STORAGE POWDER, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

摘要

A graphite adsorption phase change energy-storage powder. The graphite adsorption phase change energy-storage powder comprises the following components in parts by weight: 100 parts of a phase change powder and 5-9 parts of worm-like expanded graphite. The worm-like expanded graphite is selected as an adsorption material, so that same is loose and porous and has a large specific surface area, and thus has a very strong adsorption capacity for the phase change powder, and the adsorption of the phase change material can be completed using only a relatively few parts by weight of the worm-like expanded graphite. According to the preparation method, a vacuum adsorption process is used and stirring is carried out in a vacuum, so that the molten phase change powder can more easily and deeply permeate fluffy deep holes of the worm-like expanded graphite. After the phase change material enters the deep holes, the worm-like expanded graphite which is of as little an amount as possible adsorbs more phase change materials, and the phase change enthalpy of the graphite adsorption phase change energy-storage powder is increased by 5-10 percent, so that the performance is greatly improved, the cost is also greatly reduced due to the reduction of the use amount of the worm-like expanded graphite, and the application range is very wide.