WSD-1722 PV Backsheet Adhesive
- WSD-1722 is the hydroxyl component of a solvent-based two-component polyurethane adhesive. When used with an isocyanate curing agent, it is suitable for high-performance solar PV backsheets.
- It delivers excellent adhesion to well-treated PVDF, PVF, PE/PO, and PET films.
- With short curing time, high initial strength, and outstanding damp heat resistance, it can pass 121°C x 96 h and DH 3000 h aging tests.
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| Performance Indicators | Test Standard | WSD-1722 |
| Appearance | HG/T2814-2009 | Light yellow transparent viscous liquid |
| Color(Pt-Co) | GB/T 605-2006 | <80 |
| Solid Content | GB/T2793-1995 | 48%-52% |
| Viscosity (25°C) | GB/T 2794-2013 | 50-250mPa·s |
| Solvent: Ethyl Acetate Mixing Ratio (1722:N3300): 22:1 |
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Solvent: Ethyl acetate, MEK, or a mixture of both.
Lamination Method: Suitable for dry lamination equipment with smooth rollers or gravure rollers.
Coating Weight: 8–10 g/m² dry adhesive.
Curing Conditions: 50°C × 2 days.
