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用步冷曲线法,部分用DSC法对Na_2HPO_4·12H_2O-NaCH_3COO·3H_2O体系进行测定,得到该体系的相图。实验确定体系有四个四相平衡转熔温度:19℃,27℃,44℃和51℃。该体系作为相变贮热材料有实际意义。
The phase diagram of the system was obtained by the step-cooling curve method and the DSC method. The experimentally determined system has four four-phase equilibrium transformation temperature: 19 ℃, 27 ℃, 44 ℃ and 51 ℃. The system as phase change heat storage material has practical significance.