Phase change material

• With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Phase change material which has developed particularly rapidly in recent years. Do you know about Phase change material?
• The official answer: Phase-Changematerials are functional materials for tempering. It can be used to control the ambient temperature by causing heat absorption and exothermic processes caused by changes in the biological phase at a specific temperature (phase change temperature), such as the constant temperature control problems involving instruments in the manufacture of artificial satellites, as well as civil energy-saving materials. At present, the United States and France have made phase change materials such as CaCl2·6H2O and Na2SO4·10H2O into heat storage tubes for residential thermal heating. The former, the endothermic melts into a liquid at 29.9 ° C, the latter, the endothermic melts at 32.4 ° C. Chemicalbooks use their phase change heat absorption and exothermic heat to regulate the ambient temperature. The temperature control system using phase change materials has many advantages, such as simple installation, does not must a complete set of heating and heat transmission piping facilities, occupies a small footprint, does not need to be managed and maintained, saves energy, and has low costs [1]. Phase change materials can generally be divided into 4 categories according to the phase change method: solid-one solid phase change materials, solid-one liquid phase change materials, solid-one gas phase change materials and liquid-one gas phase change materials. Phase change materials can be divided into high temperature medium temperature and low temperature phase change material according to the range of phase change temperature. Phase change materials include inorganic phase change materials, organic phase change materials, and composite phase change materials [2].

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