Novel gelatinous shape-stabilized phase change materials with high heat storage density

作者：Zhang Xiaoxing; Deng Pengfei; Feng Rongxiu; Song Jian^*

来源：Solar Energy Materials and Solar Cells, 2011, 95(4): 1213-1218.

DOI：10.1016/j.solmar.2011.01.025

• Phase change materials
• Paraffin
• Polyol acetal derivatives
• Gelator
• Heat storage density

A series of polyol acetal derivatives were synthesized through condensation reactions of aromatic aldehyde with polyols, including sorbitol, mannitol, xylitol, and pentaerythritol. They were examined as gelators in the formation of paraffin-based shape-stabilized phase change materials (PCMs), in which 1,3:2,4-di-(4-methyl) benzylidene sorbitol (MOBS) exhibited excellent thermal stability. Three-dimensional netted structural phase change materials were obtained by paraffin doped with different gelators, which were thermally stable so that no leakage of paraffin occurs even under higher temperature than the melting point of paraffin. It was found that PCMs doped with 3 wt% expanded and exfoliated graphite (EG) exhibited better thermal conductivity, similar phase change temperature and heat storage density.

• 出版日期2011-4
• 单位天津大学; 海南师范大学