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Synthesis and characterization of novel solid-solid phase change materials with a polyurethaneurea copolymer structure for thermal energy storage

机译：具有聚氨酯脲共聚物结构的新型固体相变材料的合成与表征热能储存

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摘要

A series of novel polymeric solid-solid phase change materials (SSPCMs) with polyurethaneurea (PUU) copolymer structure were synthesized by the crosslinking copolymerization of polyethylene glycol (PEG) and multiamino compounds (diethylenetriamine, triethylenetetramine, tetraethylenepentamine) with different molar ratios. The results from the polarization optical microscopy (POM) and WAXD patterns indicate that the SSPCMs have typical spherocrystal morphology and characteristic diffraction peaks like neat PEG, but their spherulite size and diffraction peak intensity are smaller than those of PEG. According to the thermal analyses, the SSPCMs possess high phase transition enthalpies, good reusability and high thermal stability for their potential applications in thermal energy storage. With the decrease of crosslinking density of SSPCMs, the crystalline properties and thermal properties of SSPCMs have improved apparently, which is closely related to the free movement of PEG segments in the SSPCMs.
机译：通过具有不同摩尔比的聚乙二醇（PEG）和多亚亚氨基化合物（二亚乙基三胺，三亚乙胺）的交联共聚，合成了具有聚氨酯脲（PUU）共聚物结构的一系列新型聚合物固体相变材料（SSPCMS）。来自偏振光学显微镜（POM）和WAXD图案的结果表明SSPCMS具有典型的球晶形态和特征衍射峰，如纯PEG，但它们的球晶尺寸和衍射峰强度小于PEG。根据热分析，SSPCMS具有高相转变焓，可重复使用性和高热稳定性，用于热能储存中的潜在应用。随着SSPCMS的交联密度的降低，SSPCM的结晶性能和热性质显然改善，其与SSPCM中的PEG段的自由移动密切相关。

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  • 来源
    《RSC Advances》 |2016年第105期|共9页
  • 作者

    Chen Changzhong; Liu Wenmin; Wang Hongwei; Zhu Lanlan;

  • 作者单位

    Nanyang Normal Univ Sch Chem &

    Pharmaceut Engn Nanyang 473061 Peoples R China;

    Nanyang Normal Univ Sch Chem &

    Pharmaceut Engn Nanyang 473061 Peoples R China;

    Nanyang Normal Univ Sch Chem &

    Pharmaceut Engn Nanyang 473061 Peoples R China;

    Nanyang Normal Univ Sch Chem &

    Pharmaceut Engn Nanyang 473061 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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