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Measurement of glass transition temperature of crosslinked EVA encapsulant by thermal analysis for photovoltaic application

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  • Agroui, K.
  • Collins, G.
  • Farenc, J.

Abstract

The purpose of the experiment was to better understand the changes due to thermal transitions and the molecular organizations of EVA encapsulant material after cross linking process by thermal analysis methods as DSC, TSC and DMTA. DSC experiments on EVA show a glass transition at about −33.1 °C, which is characteristic of crystalline phase and an endothermic peak at temperature of 55 °C characteristic of amorphous phase. The basic results by TSC technique is that there are two relaxations that are reproducibly observed in crosslinked EVA encapsulant material. At temperature polarization 60 °C, a low temperature relaxation occurs at temperature −24.4 °C and a high temperature relaxation occurs at temperature +30.4 °C. DMTA results exhibit two tanδ peaks located at −14.9 °C and +66.6 °C. In addition, our results reveal that the glass transition temperature determined by TSC experiments in depolarization mode is more relevant than DSC and DMTA methods. TSC was chosen due to its low equivalent frequency consideration, useful to study encapsulant material exhibiting multiple relaxations.

Suggested Citation

  • Agroui, K. & Collins, G. & Farenc, J., 2012. "Measurement of glass transition temperature of crosslinked EVA encapsulant by thermal analysis for photovoltaic application," Renewable Energy, Elsevier, vol. 43(C), pages 218-223.
    • Handle: RePEc:eee:renene:v:43:y:2012:i:c:p:218-223
    DOI: 10.1016/j.renene.2011.11.015
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    References listed on IDEAS

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    1. Sadok, Mohammed & Mehdaoui, Ahmed, 2008. "Outdoor testing of photovoltaic arrays in the Saharan region," Renewable Energy, Elsevier, vol. 33(12), pages 2516-2524.
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    1. Agroui, Kamel & Collins, George, 2014. "Determination of thermal properties of crosslinked EVA encapsulant material in outdoor exposure by TSC and DSC methods," Renewable Energy, Elsevier, vol. 63(C), pages 741-746.
    2. Stanisław Maleczek & Kazimierz Drabczyk & Krzysztof Artur Bogdanowicz & Agnieszka Iwan, 2020. "Engineering Concept of Energy Storage Systems Based on New Type of Silicon Photovoltaic Module and Lithium Ion Batteries," Energies, MDPI, vol. 13(14), pages 1-13, July.
    3. Hocine, Labar & Samira, Kelaiaia Mounia & Tarek, Mesbah & Salah, Necaibia & Samia, Kelaiaia, 2021. "Automatic detection of faults in a photovoltaic power plant based on the observation of degradation indicators," Renewable Energy, Elsevier, vol. 164(C), pages 603-617.

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