| With the rapid development of human society, people's demand for energy is increasing. Energy supply and demand contradiction has become increasingly prominent. Solar energy which is inexhaustible, will not break the ecological balance. Solar Electric Generating System is a good renewable energy and it is considered to be the most economic, the most efficient and can provoke energy revolution. But the solar energy has intermittent and instability characteristics, so the heat storage material must be used to improve the utilization of solar energy to reduce the cost. In order to satisfy the needs of the Solar Electric Generating System, a composite thermal energy storage material that phase change material wrapped in Al2O3 matrix honeycomb ceramic were prepared in this paper.Using talc, spodumene, quartz sand, clay,α-Al2O3 as the main raw material, TiO2 and ZrO2 as nucleation agent, MgO-Al2O3-SiO2(MAS),Li2O-Al2O3-SiO2-(LAS)and MgO-Li2O-Al2O3-SiO2 glass-ceramics were prepared by powder sintering method. The properties and microstructures of the MAS,LAS and composite glass-ceramics were tested by TG-DTA, XRD and SEM respectively. The results showed that the best heat treatment process of cordierite glass-ceramics is nucleation temperature at 780℃for 1h, crystallization temperature at 1055℃for 2h. The porosity, the water absorption, the bulk density, the bending strength and the thermal expansion coefficient of the best sample M-4 were 0.71%,0.26%,2.76g.cm-3,86.58 MPa and 3.56×10-6℃-1 respectively. The best heat treatment process of spodumene glass-ceramics is nucleation temperature at 770℃for 2h, crystallization temperature at 1050℃for 2h. The porosity, the water absorption, the bulk density, the bending strength and the thermal expansion coefficient of the best sample L-4 were 10.91%, 4.68%,2.15g.cm-3,52.81 MPa and 1.95×10-6℃-1 respectively. The porosity, the water absorption, the bulk density, the bending strength and the thermal expansion coefficient of the best sample LM-3 were 1.61%,0.58%,2.26g.cm-3,75.36 MPa and 2.81×10-6℃-1 respectively, which can be used as solar thermal power generation combined with heat storage material agent.Withα-Al2O3, the Xingzi kaolin as the main raw material, cordierite glass-ceramics and spodumene glass-ceramics as the binding agent, a composite thermal energy storage material that phase change material wrapped in Al2O3 matrix honeycomb ceramic were prepared. The encapsulation of phase change material moments sodium chloride high temperature encapsulation agent and a different amount of phase change materials package were designed. The results show that the best ratio of composite alumina-based ceramic honeycomb is theα-Al2O3, cordierite glass-ceramics, spodumene glass-ceramics and the kaolin were 70%,5%,5% and 20%, tung oil and the CMC content of 2% to 5%, the ratio of binder is 70%α-Al2O3, 5%cordierite glass-ceramics,5%spodumene glass-ceramics,20% the kaolin and 20% binder. SEM results show the binder was a good binder to Al2O3 matrix honeycomb ceramic.The glass phase in the binder was infiltrate to the Al2O3 matrix honeycomb ceramic, while the crystalline phase in the honeycomb ceramic to the growth of the binder, resulting in the formation of two intermediate layer, which will closely integrate the transition layer closely. Experiments show that by the heat storage capacity, with the amount of NaCl encapsulated phase change materials, the increase in heat storage capacity of the samples showed an upward trend, in which R-7 most slow down the temperature of the sample, its heat storage capacity of the best; and no package phase change materials R-1 samples compared to samples after the packaging phase change material heat storage capacity is improved.
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