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首页> 外文期刊>RSC Advances >Polyethylene glycol/Cu/SiO2 form stable composite phase change materials: preparation, characterization, and thermal conductivity enhancement
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Polyethylene glycol/Cu/SiO2 form stable composite phase change materials: preparation, characterization, and thermal conductivity enhancement

机译：聚乙二醇/ Cu / SiO2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

Novel form-stable composite phase change materials (FS-CPCMs) of polyethylene glycol (PEG)/Cu/SiO2 were prepared by adding Cu powder to PEG and SiO2 via the ultrasound-assisted sol-gel method. This method ensured the uniform distribution of Cu powder in the FS-CPCMs, thus providing an important method to develop composite phase change materials (CPCMs) with a high thermal conductivity. The FS-CPCMs were characterized by various techniques. The results showed that the FS-CPCMs remained in the solid state without leakage above the melting point of PEG. The XRD and FTIR results indicated that no new chemical bond was formed between the constituents of FS-CPCMs: Cu, PEG, and SiO2. The DSC and TGA analyses showed that the FS-CPCMs had an optimum phase-change temperature, a high enthalpy of phase change, an excellent thermal stability, and a good form-stable performance. The thermal conductivity was 0.431 W m(-1) K-1 for 3.45 wt% Cu powder in the FS-CPCMs, an increase of 49.13% compared to pure PEG.
机译：通过超声辅助溶胶 - 凝胶法将Cu粉末和SiO 2加入PEG和SiO 2，制备聚乙二醇（PEG）/ Cu / SiO 2的新型稳定复合相变材料（FS-CPCMS）。该方法确保了FS-CPCMS中Cu粉末的均匀分布，从而提供了具有高导热性的复合相变材料（CPCMS）的重要方法。 FS-CPCMS的特征在于各种技术。结果表明，FS-CPCMS保持在固态的情况下，在佩格的熔点上方没有泄漏。 XRD和FTIR结果表明，在FS-CPCMS的成分之间没有形成新的化学键：Cu，PEG和SiO2。 DSC和TGA分析表明，FS-CPCMS具有最佳相变温度，相变的高焓，优异的热稳定性和良好的形式稳定的性能。热传导率为0.431脉冲W M（-1）K-1为3.45％（重量）的Cu粉在FS-CPCMs，相比于纯的PEG增加了49.13％。

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  • 来源
    《RSC Advances》 |2016年第63期|共9页
  • 作者

    Zhang Xiaoguang; Huang Zhaohui; Ma Bin; Wen Ruilong; Zhang Ming; Huang Yaoting; Fang Minghao; Liu Yan-gai; Wu Xiaowen;

  • 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;

    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;

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  • 正文语种 eng
  • 中图分类 化学;
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