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Novel gelatinous shape-stabilized phase change materials with high heat storage density |
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| Authors: | Xiaoxing ZhangPengfei Deng Rongxiu FengJian Song |
| Affiliation: | a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China b School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China c Hainan Provicial Key Lab of Tropical Pharmaceutical Herb Chemistry, Haikou 571158, PR China |
| Abstract: | 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 (MDBS) 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. |
| Keywords: | Phase change materials Paraffin Polyol acetal derivatives Gelator Heat storage density |
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