Insights into the encapsulation process of photovoltaic modules: GCMS analysis on the curing step of poly(ethylene-co-vinyl acetate) (EVA) encapsulant
| Autor: | Heng-Yu Li, Christophe Ballif, Ricardo Théron, Yun Luo, Laure-Emmanuelle Perret-Aebi, Ted C. J. Turlings, Ronald F. M. Lange, Gregory Röder |
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| Předmět: |
Silanes
Materials science Polymers and Plastics Photovoltaic system Encapsulation (networking) chemistry.chemical_compound Chemical engineering chemistry Materials Chemistry Ceramics and Composites Vinyl acetate Gas chromatography Composite material Gas chromatography–mass spectrometry Curing (chemistry) Poly ethylene |
| Zdroj: | Scopus-Elsevier |
| Popis: | Appropriate encapsulation schemes are essential in protecting the active components of the photovoltaic (PV) module against weathering and to ensure long term reliability. For crystalline cells, poly(ethylene- co-vinyl acetate) (EVA) is the most commonly used PV encapsulant. Additives like peroxides and silanes are formulated in EVA encapsulants to obtain the desired properties, e.g. the desired gel content value and sufficient adhesion after the encapsulation process etc. The identification and control of volatile organic compounds (VOCs) released by the polymeric encapsulant during PV module encapsulation is important for understanding and optimizing processes in order to enhance the encapsulation quality of the manufactured modules. The authors demonstrate how gas chromatography and mass spectrometry (GC-MS) techniques can be used to help understand the curing process, mainly by identifying the VOCs emanating from EVA under the effect of temperature and pressure. The results provide chemical insights into the EVA encapsulation process, which are valuable for further optimization of the PV module manufacturing process and evaluation of its environmental impact. |
| Databáze: | OpenAIRE |
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