BPP-60 PV Backsheet
- BPP-60 is a lightweight module backsheet made with a PP multilayer fiberglass composite structure and double-sided weather-resistant coatings, offering excellent insulation, structural support, and bonding performance.
- With a total thickness of 0.7±10%, MD/TD tensile strength ≥300 N/mm², breakdown voltage ≥20 kV, partial discharge voltage ≥1500 VDC, and reflectance ≥75%, it provides high-strength support, reliable insulation, and long-term weather protection for lightweight PV modules.
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|
Performance Indicators |
Test Standard | BPP-60 | |
|
Total Thickness |
/ | 0.7±10%mm | |
|
Colour |
/ | White/Black | |
|
Fluorine Content |
/ | Fluoropolymer Coating/Fluoropolymer Free | |
|
Tensile Strength |
MD | GB/T 13542.2-2009 | ≥300N/mm² |
| TD | GB/T 13542.2-2009 | ≥300N/mm² | |
|
Heat Shrinkage Rate |
MD | GB/T 13542.2-2009 | 0≤MD≤0.8% |
| TD | GB/T 13542.2-2009 | 0≤MD≤0.8% | |
|
Coating Adhesion (grade) |
GB/T 9286-1998 | grade 0 | |
|
Bond Strength With EVA /POE (initial) |
GB/T 2790-1995 | ≥60N/10mm | |
|
Interlayer Peel Strength (Initial) |
GB/T 2790-1995 | ≥4N/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 | ≤1g/m²·d | |
|
Reflectivity (400mm-1100nm) |
GB/T 2410-2008 | ≥70% | |
|
Damp Heat Aging Test |
IEC 61215-2005 | No delamination, no bubbles, Δb≤2 | |
|
UV Aging |
IEC 61215-2005 | No delamination, no bubbles, no embrittlement, Δb≤2 | |
|
Thermal Cycling Test |
IEC 61215-2005 | No delamination, no bubbles, no embrittlement, Δb≤2 | |
|
Humidity Freeze Test |
IEC 61215-2005 | No delamination, no bubbles, no embrittlement, 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 | |
