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首页> 外文期刊>RSC Advances >1,3:2,4-di-(3,4-dimethyl)benzylidene sorbitol organogels used as phase change materials: solvent effects on structure, leakage and thermal performance
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1,3:2,4-di-(3,4-dimethyl)benzylidene sorbitol organogels used as phase change materials: solvent effects on structure, leakage and thermal performance

机译：1,3：2,4-二甲基（3,4-二甲基）苄基山梨糖醇有机凝胶用作相变材料：溶剂对结构，泄漏和热性能的影响

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摘要

Organogels used as shape-stable phase change materials were prepared by impregnating a low molecular mass organogelator into organic phase change materials. 1,3:2,4-di-(3,4-dimethyl)benzylidene sorbitol (DMDBS) was used as the supporting material and n-octadecane, ethyl palmitate, 1-octadecanol and 1-tetradecanol were used as the phase change materials. The thermal properties, such as phase change temperature and latent heat, were investigated using a differential scanning calorimeter (DSC). The leakage and thermal storage performance of the composite phase change materials were also investigated in detail. Rheology measurements were used to demonstrate the true gel phase of the composite phase change materials. Fourier transformation infrared spectroscopy (FTIR) and scanning electronic microscopy (SEM) were used to determine the chemical structure and microstructure of the composites. The DSC results indicated that the composites exhibited acceptable thermal properties with a high mass percentage of the phase change material. Flory-Huggins parameters (chi) were calculated to estimate the interactions between the gelator and phase change materials. The results indicated that different chi resulted in different morphologies of DMDBS, which led to different leakages and thermal storage performances of the prepared composites.
机译：通过将低分子质量有机胶质剂浸渍到有机相变材料中来制备用作形状稳定相变材料的有机凝胶。使用1,3：2,4-二甲基）苄基山梨糖醇（DMDBS）用作支撑材料和正八癸烷，用作相变材料的乙基棕榈酸乙酯，1-十八烷醇和1-四癸醇。使用差示扫描量热计（DSC）研究了热性质，例如相变温度和潜热。还详细研究了复合相变材料的泄漏和热储存性能。使用流变学测量来证明复合相变材料的真正凝胶相。傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）用于确定复合材料的化学结构和微观结构。 DSC结果表明复合材料表现出具有高质量百分比的相变材料的可接受的热性能。计算血液 - Huggins参数（CHI）以估计凝胶胶和相变材料之间的相互作用。结果表明，不同的CHI导致DMDB的不同形貌，从而导致制备复合材料的不同泄漏和热存储性能。

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  • 来源
    《RSC Advances》 |2015年第28期|共7页
  • 作者

    Niu Libo; Bai Guoyi; Song Jian;

  • 作者单位

    Hebei Univ Coll Chem &

    Environm Sci Key Lab Chem Biol Hebei Prov Baoding 071002 Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Key Lab Chem Biol Hebei Prov Baoding 071002 Peoples R China;

    Tianjin Univ Sch Chem Engn &

    Technol Tianjin 300072 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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