相变温度为室温的Na2 SO4·10 H2 O相变储热材料的制备研究?

合成材料老化与应用, 2015, (1): 39-46.

相变温度为室温的Na2 SO4·10 H2 O相变储热材料的制备研究?

李凤艳 ^1, , 王鹏 ^2, , 袁亚东 ^3, , 杨雅君 ^4, , 钱浏滢 ^5,

1.北京石油化工学院,北京,102617

2.北京石油化工学院,北京,102617

3.中国石油化工股份有限公司洛阳分公司,河南洛阳,471012

4.北京石油化工学院,北京,102617

5.北京石油化工学院,北京,102617

基金项目: 北京石油化工学院促进人才培养综合改革项目(14010121031)

关键词：相变材料 , 十水硫酸钠 , 相变温度 , 相变潜热

The Preparation of Phase Change Material Na2 SO4·10 H2 O with the Phase Transition Temperature at Room Temperature

Keywords： phase change material , Na2 SO4·10H2 O , phase transition temperature , phase enthalpy

利用十水硫酸钠作为相变储热体系的主体成分，加入一定量的氯化钠，可以适当降低体系的相变温度，达到更适合人类使用的27℃左右的室温范围。同时针对十水硫酸钠的相分离、过冷问题，加入一定量的增稠剂和成核剂，使相变储热体系更加稳定。用DSC法测定了该储热体系的相变温度和相变焓，最终确定了相变焓较高、相变温度在室温范围内的以十水硫酸钠为主体成分的相变储热体系的最佳配方。

The phase transition temperature of the Na2 SO4·10H2 O phase change material was successfully re-duced to 27℃ by using a certain amount of NaCl. For the problem of phase separation and supercooling,adding a certain amount of thickening agent and nucleating agent made the phase change system more stable. The phase transition temperature and the enthalpy of the system was measured by DSC,then the best recipes with high enthalpy and room temperature was determined.

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