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Erscheinungsjahr
- 2012 (12) (entfernen)
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- Vortrag (4)
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- Posterpräsentation (2)
Schlagworte
- Acoustic propagation (1)
- Compression set (1)
- Cross linked polyethylene insulation (1)
- Crosslinking (1)
- Curemeter (1)
- DSC (1)
- Dynamic mechanical analysis (1)
- EVA (1)
- Elastomer (1)
- Ethylene vinyl acetate (1)
Eingeladener Vortrag
- nein (4)
EVA is a widely used material for the encapsulation of photovoltaic modules. It melts at elevated temperatures, and seals the module before it is crosslinked at temperatures above 130 °C by a peroxide-initiated crosslinking reaction. EVA has good optical properties necessary for application in solar modules. For process optimization and quality management, a method for the quick and reliable characterization of EVA crosslinking behaviour is of great value. Here, the practicability of ultrasound for online crosslinking monitoring is demonstrated. A sound velocity increase of about 8 m/s during the crosslinking reaction is found. The ultrasound results are compared with rheometer measurements performed with a curemeter typically used for the investigation of rubber crosslinking.