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Applied clay science v.138, 2017년, pp.100 - 106   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Stearic acid modified montmorillonite as emerging microcapsules for thermal energy storage

Peng, Kang (Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China ) ; Fu, Liangjie (Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China ) ; Li, Xiaoyu (Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China ) ; Ouyang, Jing (Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China ) ; Yang, Huaming (Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China ) ;
  • 초록  

    Abstract In order to obtain an efficient phase change material (PCM), emerging montmorillonite/stearic acid (Mt/SA) microcapsules containing SA core with Mt shell were designed and prepared via self-assembly of Mt in the SA emulsion. The Mt/SA microcapsules were coated with SiO 2 from the hydrolysis and polycondensation of TEOS to enhance the structure stability. The microstructure, thermal properties and reliability of Mt/SA microcapsules were investigated via scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The Mt/SA microcapsules presented sphere-like particles and had a size distribution from 10 to 30μm. The freezing latent heat of the Mt/SA microcapsules was 118J/g at 52.3°C. The energy storage rate of the Mt/SA microcapsules was faster compared to SA. The Mt/SA microcapsules had excellent structural stability, high energy storage capacity and stable energy storage and release performances. The energy storage performances of the Mt/SA microcapsules were superior to the Mt/SA composites prepared via vacuum impregnation. Excellent energy storage reliability and capability of the Mt/SA microcapsules have advantages for solar energy storage fields. Highlights Montmorillonite/stearic acid/(Mt/SA) microcapsules were designed via self-assembly. Microcapsules were coated with the hydrolyzate SiO 2 to enhance the structure stability. Mt/SA presented spherical particles with a size distribution from 10 to 30μm. Mt/SA showed higher thermal storage and release rate with excellent stability. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Montmorillonite .   Microcapsules .   Phase change materials .   Self-assembly .   Thermal energy storage.  

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