Preparation of polyethylene glycol/silicon dioxide phase change materials
This paper deals with the preparation of polyethylene glycol (PEG)/silicon dioxide (SiO2) composites as shape-stable, solid-liquid phase change material (PCM) for thermal energy storage and determination of their thermal properties.The result showed that it was successful to keep the same shape in the solid state by making PEG adsorbed on microporous SiO2 network even when the temperature of the PCM was over the melting point.The PCM also had favorable heat capacity and high thermal conductivity, which could be used in solar energy and some other applications.