Novel phase-change heat-storage material and preparation method thereof

Abstract

The invention discloses a novel phase-change heat-storage material and a preparation method thereof, the phase-change heat-storage material is composed of paraffin, expandable graphite, active carbon and copper powder by mixing, wherein paraffin mass fraction accounts for 60%, the paraffin melting point is selected between 50-70 DEG C, expandable graphite mass fraction accounts for 20%, and sum of mass fraction of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release speed, no corrosivity to metal containers and no changed profile after phase change.

Description

1. Technical field

[0001] The invention relates to the field of phase-change heat storage materials, in particular to a novel phase-change heat storage material prepared by compounding organic matter, expanded graphite, activated carbon and copper powder. 2. Background technology

[0002] Energy saving and environmental protection are an important topic in the field of energy utilization. Using phase change latent heat of phase change heat storage materials to store energy is a new type of energy saving technology. During the phase change process, the phase change material absorbs the heat of the surrounding environment, and releases heat to the surrounding environment when the temperature of the surrounding environment decreases, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in solar energy utilization, heat energy recovery, air conditioning and refrigeration, building energy ...