TONSAN 2538 is a two-part, addition-cure PV cell encapsulant whose curing profile matches low-temperature lamination processes. It is transparent with high optical transmission and UV transparency down to 250nm, adheres well to glass and PV cells, and provides excellent electrical insulation. FEYANA supplies TONSAN 2538 to PV module manufacturers.
Key features
- Curing profile matches low-temperature lamination (12.5min@65℃)
- Good adhesion to glass and PV cells
- High optical transmission, UV transparent to 250nm
- Excellent electrical insulation
- Superior ageing resistance, non-yellowing
- PID free
Technical data
| Curing type | Addition cure |
|---|---|
| Mix ratio by volume | 1:1, 2-part |
| Color | Transparent |
| Viscosity (cPs) / Extrusion rate (s/20g) | 42000-48000 |
| Working time @25℃ | ≥60min |
| Curing speed | 12.5min@65℃ |
| Tensile strength (MPa) | ≥0.2 |
| Breakdown voltage (kV/mm) | ≥20 |
| Volume resistance (Ω·cm) | ≥0.5×10^15 |
Applications
- PV cell encapsulation
Data are typical values from the manufacturer’s literature. Contact us for the TDS/SDS and selection advice.
Contact FEYANA: WhatsApp/Zalo +84 988 641 591 – sales.00@feyana.com




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