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Applied energy v.212, 2018년, pp.455 - 464   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Composite phase change materials with good reversible thermochromic ability in delignified wood substrate for thermal energy storage

Yang, Haiyue (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Wang, Yazhou (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Yu, Qianqian (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Cao, Guoliang (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Yang, Rue (Guangdong Yihua Timber Industry Co., Ltd, Guangzhou 510000, China ) ; Ke, Jiaona (Guangdong Yihua Timber Industry Co., Ltd, Guangzhou 510000, China ) ; Di, Xin (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Liu, Feng (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Zhang, Wenbo (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ; Wang, Chengyu (Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, China ) ;
  • 초록  

    Abstract Phase change materials applied in the thermal insulation of building or storage system are beneficial to slow down internal temperature fluctuation and decrease energy consumption. Visible temperature change can provide convenience for people's production and life. In this work, the thermochromic delignified wood composite phase change materials (TCDWs) composed of thermochromic (TC) compound and delignified wood (DW) are fabricated by vacuum-assisted impregnation method. Various techniques are applied to characterize mechanical and thermal properties of TCDWs. Results indicate that TCDWs exhibit suitable phase change temperature, large latent heat, good thermal reliability, as well as excellent thermal stability and mechanical properties. More importantly, TCDWs have excellent reversible thermochromic ability and visibly show the phase change progress and temperature by color change from dark blue to off-white. The thermal insulation ability of TCDWs can reduce heat flow and heat exchange between inside and outside environment, maintaining the internal temperature for longer time. The largest absorption capacity of DW is 65%, which is 15% more than that of pristine wood (PW). The excellent reversible thermochromic, thermal and mechanical properties of TCDWs have great potential in thermal energy storage applications including thermal insulation, decoration, furniture, storage and building energy conservation. Highlights Delignified wood as supporting material is firstly used in composite phase change materials. Reversible thermochromic ability visibly shows phase change process by color change. Low thermal conductivity of TCDWs can maintain internal temperature for longer time. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Phase change materials .   Reversible thermochromic ability .   Thermal insulation ability .   Delignified wood.  

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