Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Peeling Behavior of Backsheet according to Surface Temperature of Photovoltaic Module

태양광 모듈 표면 온도 제어에 따른 백시트 박리 거동

  • Kim, Jeong-Hun (Separation and Conversion Materials Laboratory, Korea Institute of Energy Research) ;
  • Lee, Jun-Kyu (Separation and Conversion Materials Laboratory, Korea Institute of Energy Research) ;
  • Ahn, Young-Soo (Separation and Conversion Materials Laboratory, Korea Institute of Energy Research) ;
  • Yeo, Jeong-Gu (Separation and Conversion Materials Laboratory, Korea Institute of Energy Research) ;
  • Lee, Jin-Seok (Separation and Conversion Materials Laboratory, Korea Institute of Energy Research) ;
  • Kang, Gi-Hwan (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Cho, Churl-Hee (Graduate School of Energy Science and Technology, Chungnam National University)
  • 김정훈 (한국에너지기술연구원 분리변환소재연구실) ;
  • 이준규 (한국에너지기술연구원 분리변환소재연구실) ;
  • 안영수 (한국에너지기술연구원 분리변환소재연구실) ;
  • 여정구 (한국에너지기술연구원 분리변환소재연구실) ;
  • 이진석 (한국에너지기술연구원 분리변환소재연구실) ;
  • 강기환 (한국에너지기술연구원 태양광연구실) ;
  • 조철희 (충남대학교 에너지과학기술대학원)
  • Received : 2019.09.17
  • Accepted : 2019.10.15
  • Published : 2019.11.27
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Abstract

In this study, we investigate the relationship between the peeling behavior of the backsheet of a photovoltaic(PV) module and its surface temperature in order facilitate removal of the backsheet from the PV module. At low temperatures, the backsheet does not peel off whereas, at high temperatures, part of the backsheet remains on the surface of the PV module after the peeling process. The backsheet material remaining on the surface of the PV module is confirmed by X-ray diffraction(XRD) analysis to be poly-ethylene(PE). Differential scanning calorimetry(DSC) is also performed to investigate the interfacial characteristics of the layers of the PV module. In particular, DSC provides the melting temperature($T_m$) of laminated ethylene vinyl acetate(EVA) and of the backsheet on the PV module. It is found that the backsheet does not peel off below the $T_m$ of ethylene of EVA, while the PE layer of the backsheet remains on the surface of the PV module above the $T_m$ of the PE. Thus, the backsheet is best removed at a temperature between the $T_m$ of ethylene and that of PE layer.

Keywords

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