四元硝酸盐/MCM41多孔复合蓄热材料的制备及稳定性研究

华电技术 ›› 2020, Vol. 42 ›› Issue (4): 17-22.

四元硝酸盐/MCM41多孔复合蓄热材料的制备及稳定性研究

1.内蒙古工业大学能源与动力工程学院，呼和浩特010051；2.内蒙古工业大学太阳能应用技术工程中心，呼和浩特010051；3.北京工业大学环境与能源工程学院
，北京100124

出版日期:2020-04-25

Study on preparation for quaternary nitrates/MCM41 porous composite heat-storage material and its stability

1.College of Energy and Power Engineering，Inner Mongolia University of Technology，Hohhot 010051，China；2.Engineering Center of Solar Energy Utilization Technology，Inner Mongolia University of Technology，Hohhot 010051，China；3.College of Environmental and Energy Engineering，Beijing University of Technology，Beijing 100124，China

Published:2020-04-25

摘要/Abstract

摘要： 为获得稳定性良好的复合蓄热材料，以四元硝酸盐为相变材料，MCM41 为基体材料，按照四元硝酸盐与 MCM41不同质量配比，制备得到四元硝酸盐/MCM41多孔复合蓄热材料。经过 100次热循环试验后验证了复合材料的化学稳定性及热稳定性。X射线衍射（XRD）和傅里叶变换红外光谱（FT-IR）表征结果表明，复合材料在热循环前后化学组分没有变化，具有较好的化学稳定性。差示扫描量热法（DSC）曲线分析结果表明，复合材料熔点、熔化潜热值在热循环实验前后变化不大，热稳定性较好。复合材料密度随四元硝酸盐比例增加而增大，抗压强度在四元硝酸盐与 MCM41 质量比为 6∶4 时最大。结合材料的热物性及密度和抗压强度参数，认为四元硝酸盐与 MCM41质量比为6∶4时是最优配比。

关键词: 四元硝酸盐, MCM41, 相变, 多孔复合材料, 化学稳定性, 热稳定性, 熔化潜热, 蓄热

Abstract: ：To obtain a composite heat-storage material with good stability，quaternary nitrates/MCM41 porpous composite heat-storage material was prepared with quaternary nitrates as its phase change material and MCM41 as its matrix material. The chemical and thermal stability of the composite material with different mass ratios of quaternary nitrates to MCM41 was verified by 100 thermal cycling experiments. XRD and FT-IR characterization results indicated that the chemical composition of the composite material was unchanged after the experiments and was of positive chemical stability.Its DSC curves showed that the melting point and latent heat of fusion after the thermal cycling experiments were similar with that before the experiments，which confirmed the good thermal stability of the composite material.The density of the composite material was increased with the growth of quaternary nitrate's mass ratio，and its compressive strength was maximum when the mass ratio of quaternary nitrate to MCM41 was 6∶4.Considered the thermal properties，density and compressive strength of the composite material comprehensively，the optimal mass ratio for quaternary nitrate to MCM41 is 6∶4.

Key words: quaternary nitrates, MCM41, phase change, porous composite material, chemical stability, thermal stability, melting latent heat, heat storage

李进，王峰*，张世广，吴玉庭. 四元硝酸盐/MCM41多孔复合蓄热材料的制备及稳定性研究[J]. 华电技术, 2020, 42(4): 17-22.

LI Jin，WANG Feng*，ZHANG Shiguang，WU Yuting. Study on preparation for quaternary nitrates/MCM41 porous composite heat-storage material and its stability[J]. Huadian Technology, 2020, 42(4): 17-22.

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