BPF-807 PV Backsheet
- BPF-807 is a high-barrier photovoltaic backsheet with weather-resistant PET as the support layer and an integrated water vapor barrier layer, providing enhanced rear-side protection for solar cells.
- With a total thickness of 321±5%, MD/TD tensile strength ≥120 MPa, breakdown voltage ≥20 kV, CTI ≥300, partial discharge voltage ≥1500 VDC, and WVTR ≤0.3 g/m²·d, it combines high barrier performance, reliable insulation, strong bonding, and long-term damp-heat resistance.
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|
Performance Indicators |
Test Standard | BPF-807 | |
|
Total Thickness |
/ | 321±5%μm | |
|
Structure |
/ | Weather Resistant PET+Water Vapor Barrier Film | |
|
Colour |
/ | Transparent/White/Black | |
|
Fluorine Content |
/ | Fluoropolymer Coating/Fluoropolymer Free | |
|
Tensile Strength |
MD | GB/T 13542.2-2009 | ≥120MPa |
| TD | GB/T 13542.2-2009 | ≥120MPa | |
|
Elongation at break |
MD | GB/T 13542.2-2009 | ≥100% |
| TD | GB/T 13542.2-2009 | ≥90% | |
|
Heat Shrinkage Rate (150℃×30min) |
MD | GB/T 13542.2-2009 | ≤0.6% |
| TD | GB/T 13542.2-2009 | ≤0.6% | |
|
Coating Adhesion (grade) |
GB/T 9286-1998 | grade 0 | |
|
Bond Strength With EVA /POE (initial) |
GB/T 2790-1995 | ≥60N/10mm | |
|
Breakdown Voltage |
GB/T 13542.2-2009 | ≥20kV | |
|
Comparative Tracking Index (CTI) |
IEC 60664-1 | ≥300V | |
|
Partial Discharge Voltage |
IEC 60664-1 | ≥1500VDC | |
|
WVTR |
GB/T 26253-2010 | ≤0.3g/m²·d | |
|
Damp Heat Aging Test (85℃×85%RH, 2000h） |
IEC TS 62788-2 | No delamination, no bubbles, Δb≤2 | |
|
Boiling Water Treatment |
Visual Inspection | GB/T 17748-2008 | No delamination, no bubbles, no wrinkling, no peeling, no chalking |
| Coating Adhesion(Grade) | GB/T 9286-1998 | Grade 0 | |
