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首页> 外文期刊>Energy and Buildings >Form stable composite phase change materials from palmitic-lauric acid eutectic mixture and carbonized abandoned rice: Preparation, characterization, and thermal conductivity enhancement
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Form stable composite phase change materials from palmitic-lauric acid eutectic mixture and carbonized abandoned rice: Preparation, characterization, and thermal conductivity enhancement

机译：由棕榈-月桂酸低共熔混合物和碳化废弃大米形成稳定的复合相变材料：制备，表征和导热性增强

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摘要

In this study, novel form stable composite phase change materials (FS-CPCMs) from palmitic-lauric acid (PA-LA) eutectic mixture and carbonized abandoned rice (CAR) were prepared via vacuum impregnation. The CAR served as a good supporting material to prevent PA-LA from leaking and enhanced the thermal conductivity of PA-LA. SEM results showed that the CAR has a highly porous structure consisting of rough micro-pores and PA-LA did not leak from the CAR during the solid-liquid phase transition. DSC indicated that the latent heat and temperature of PA-LA/CAR FS-CPCMs during melt were 135.4J/g and 343 degrees C, respectively, whereas, these values were 124.8 Jig and 28.6 degrees C during freezing, respectively. The thermal conductivity of PA-LA/CAR FS-CPCMs was 1.83 times that of PA-LA. The heat storage/release rate of the. PA-LA/CAR FS-CPCMs is significantly more than that of PA-LA for practical applications. The results obtained from FTIR demonstrated that no new chemical bonds were formed between PA-LA and CAR. TGA and 200-cycle experiments showed that the PA-LA/CAR FS-CPCMs exhibit excellent thermal stability and form-stable performance. The PA-LA/CAR FS-CPCMs thus prepared were safe, environmentally friendly, and cost-effective; hence, they can be used as potential building materials for the applications of thermal energy storage. (C) 2017 Elsevier B.V. All rights reserved.
机译：在这项研究中，通过真空浸渍制备了棕榈-月桂酸（PA-LA）低共熔混合物和碳化废弃大米（CAR）形成的新型形式稳定的复合相变材料（FS-CPCM）。 CAR是防止PA-LA泄漏并增强PA-LA导热性的良好支撑材料。 SEM结果表明，CAR具有高度的多孔结构，由粗糙的微孔组成，在固液相转变过程中PA-LA没有从CAR中泄漏出来。 DSC表明，熔融期间PA-LA / CAR FS-CPCM的潜热和温度分别为135.4J / g和343℃，而在冷冻过程中这些潜热和温度分别为124.8Jig和28.6℃。 PA-LA / CAR FS-CPCM的导热系数是PA-LA的1.83倍。的储热/散热率。在实际应用中，PA-LA / CAR FS-CPCM比PA-LA明显更多。从FTIR获得的结果表明，PA-LA和CAR之间没有形成新的化学键。 TGA和200个循环的实验表明，PA-LA / CAR FS-CPCM具有出色的热稳定性和形状稳定性能。这样制备的PA-LA / CAR FS-CPCM安全，环保且具有成本效益；因此，它们可用作热能存储应用的潜在建筑材料。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2017年第11期|46-54|共9页
  • 作者

    Zhang Xiaoguang; Huang Zhaohui; Yin Zhaoyu; Zhang Weiyi; Huang Yaoting; Liu Yangai; Fang Minghao; Wu Xiaowen; Min Xin;

  • 作者单位

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

    China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Palmitic-lauric acid eutectic mixture; Carbonized abandoned rice; Thermal conductivity; Phase change materials;

    机译：棕榈酸-月桂酸低共熔混合物;碳废弃米;导热系数;相变材料;

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