WSD-1553 PV Backsheet Coating
- WSD-1553 is the main component of a two-component fluorocarbon coating. When used with an isocyanate curing agent, it is suitable for high-performance coated backsheets for solar PV modules.
- The coating offers excellent scratch resistance, solvent wipe resistance, and damp heat aging resistance. With proper formulation, it can pass the HAST 48 h aging test.
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Performance Indicators |
Test Standard | WSD-1553 |
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Appearance |
HG/T2814-2009 | White viscous paste |
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Solid Content |
GB/T2793-1995 | 58%-62% |
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Viscosity (25°C) |
GB/T 2794-2013 | 300-700mPa·s |
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Solvent: PMA |
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| Process Recommendations | ||
| Processing Performance | Item | Recommendations |
| Test Substrate | PET | |
| Pretreatment | Corona treatment | |
| Coating Thickness | Above 10 μm | |
| Oven Conditions | ≥160°C × 1 min | |
| Curing Conditions | No post-curing required after exiting the oven. Keep rewinding tension as low as possible. | |
| Coating Method: Suitable for dry lamination equipment with gravure rollers. Curing Agent: Covestro N3300 is recommended. Main Resin/Curing Agent Ratio: WSD-1553/N3300 = 100/6. |
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