碳纳米管对有机相变储能材料的影响

深圳大学化学与环境工程学院,广东深圳 518060

有机材料; 相变储能材料; 碳纳米管; 复合材料; 微观形貌; 储热性能

Effect of carbon nanotubes on organic phase change materials
Ni Zhuo, Zeng Yinyin, Zhou Fangyu, Bai Jiajian, and Zhou Jinhui

College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China

organic material; phase change material; carbon nanotube; composite; microstructure; heat-storage

DOI: 10.3724/SP.J.1249.2016.03241

备注

在月桂酸和十四醇中分别加入多壁碳纳米管制备复合相变储能材料,采用傅里叶红外光谱仪表征材料的化学成分,采用扫描电子显微镜观察材料的表面形态,采用差示扫描热量仪测量材料的相变潜热和相变温度. 研究表明,碳纳米管与这些相变材料以部分共价键的方式复合,均匀地分散于储能材料中. 碳纳米管对相变材料相变温度和相变潜热均产生影响,碳纳米管含量越高,复合材料的熔程越窄,相变潜热越大,对相变温度的反映程度升高. 采用该实验方法制备的复合材料表现出良好的储能稳定性,可用于储能材料工程的设计.

Multi-walled carbon nanotubes were added to Lauric acid or Myristyl alcohol to prepare composite phase-change energy storage materials. Chemical constituents and surface morphology of these materials were analyzed by the Fourier transform infrared spectroscopy and the scanning electron microscope respectively while latent heat and phase change temperature were tested through differential scanning calorimeter. The results show that the carbon nanotubes and the phase change materials are well mixed in the form of partial covalent bond and dispersed evenly in the composite materials. The addition of carbon nanotubes has an effect on the phase change temperature and latent heat for those materials. The higher the content of carbon nanotubes, the narrower the melting process of the composites, the higher the latent heat, and the more sensitivity of the composites. The prepared composites, by using the proposed method, have good storage stability, and can be used for designing energy storage materials.

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