以棕榈酸为基的复合相变材料的制备和表征
Preparation and Characterization of a Kind of Composite Phase Change Material Based on Palmitic Acid
  
DOI:
中文关键词:  棕榈酸  溶胶-凝胶法  复合材料  相变  储热
英文关键词:Palmitic acid,Sol-gel process,Composite material,Phase change,Heat storage
基金项目:
作者单位
张静,丁益民,陈念贻 上海大学理学院,上海,200444 
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中文摘要:
      采用溶胶—凝胶法,以正硅酸乙酯(TEOS)和棕榈酸(PA)为主原料,制备了一种有机—无机蚋米复合相变材料(CPCM)。在研究了加水量、溶剂量、pH值、温度以及PA的百分含量对材料制备影响的基础上。进行了实验条件的优化。用扫描电镜、红外光谱分析、差示扫描量热分析研究了其结构与性能,结果表明,该复合材料为纳米级颗粒的聚集体,具有良好的储热能力和循环热稳定性,有望用于太阳能利用等领域。
英文摘要:
      Palmitic acid-silicon dioxide nano-composite phase change material(CPCM) was prepared by sol-gel process from tetraethyi orthosilicate(TEOS) and palmitic acid(PA).Experimental conditions were optimized on molar ratios of water and solvent to TEOS,pH value,temperature and PA content.It's structure and properties were investigated by scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR) and differential scanning calorimetry(DSC).The results showed that the composite material was nanometrie and had favorable heat capacity.It is expected to be used in the application of solar energy and others.
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