| Heat -storing material is a kind of storing material which alters solar energy, terrestrial heat and residuary heat, and releases it at proper conditions. It can be widely employed in the field like industry, agriculture, textile and engineering.Alkylammonium tetrachorometallates(II) Solid-solid phase change heat storage materials have good reversibility, chemical stability, resistance to high temperature above 200℃. However, as polyols, cross-linked high density polyethylene, Alkylammonium tetrachorometallates(II) thermal storage phase change enthalpy is relatively small, thermal energy storage applications have some limitations. Thus the paper chose to have a technical and economic potential of the solid - solid phase change material - metal organometallic compounds Quaternary ammonium tetrachorometallates(II) as the research object, the general formula [CnH2n+1N(CH3)3]2MC14. We chose those compounds and their binary system as the key substances, and have a detailed study of their heat storage ability which is aimed at giving the theoretical support; draw the binary system phase diagram which is aimed at providing the meaningful reference on choosing the proper substance at the practical application. In the application, do the preparation of composite materials, thermal storage performance of the experiment. The main contents are as follows:In the first part, a series of [C16H33N(CH3)3]2MC14(M=Zn,Co,Mn,Cu,Cd,Ni)were synthesized, element analysis, IR spectra, X-ray diffraction and Scanning electron microscopy (SEM) were used to characterize them. The results showed that the complex is [C16H33N(CH3)3]2MCl4。In the second part, differential scanning calorimetric (DSC) method was used to study the heat storage properties of pure materials. The calorimetric results show that [C16H33N(CH3)3]2MC14 have good properties in heating storage such as high enthalpies, no volatility, and low extent of cooling and stability.In the third part, the experimental phase diagrams of binary system [C16H33N(CH3)3]2MnCl4 and [C18H37N(CH3)3]2MnCl4, [C16H33N(CH3)3]2CuCl4 and [C18H37N(CH3)3]2CuCl4 were established at by two techniques: DSC method and X-ray diffraction. DSC method is used to determine the relationship between the component and the transition temperature. X-ray diffraction patterns are convenient for phase analysis, which can confirm the phase of different binary system. The results show that the phase diagrams of the above mentioned two systems are similar. The thermal informations provided by the phase diagram are instructive for the practical choose of the heat storage materials.In the last part, intercalation method using both the physical and chemical compound prepared composite of two [C16H33N(CH3)3]2MCl4 complexes with montmorillonite, DSC methed was used to study the heat storage properties of the heat storage materials. The conclusion of thermodynamic study is drawn that not only [C16H33N(CH3)3]2MCl4 can be incorporated into montmorillonite, but also in the range of Phase transition temperature stability is very good.
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