1.Features and application
White PET film with excellent electrical insulation properties, low water vapor transmission rate, good coating processing performance, excellent anti-aging properties. Mainly used in the field of solar cell back material.
2.Thickness & Specification
Standard thickness: 125、150、250μm. Thickness can be customized according to customer's specific requirement.
Specification
Property | Unit | Index | Test Method | |||
Thickness | μm | 125 | 150 | 250 | GB/T 13542.2-2009 | |
Thickness tolerance | % | ±3 | ±3 | ±5 | ||
Tensile strength ≥ | MD | MPa | 150 | 140 | 140 | |
TD | 160 | 150 | 150 | |||
Elongation at break ≥ | MD | % | 110 | 100 | 90 | |
TD | 85 | 80 | 80 | |||
Heat shrinkage (150℃, 30min) ≤ | MD | % | 1.5 | |||
TD | 0.5 | |||||
Light transmittance | % | 12±4 | 10±4 | 6±4 | ASTM D 1003 | |
Electrical strength ≥ | V/μm | 90 | 85 | 60 | GB/T 1408.1-2006 | |
WVTR ≤ | g/(m2.24h) | 3.2 | 2.8 | 2.0 | GB/T 21529-2008 | |
Wetting Tension ≥ | mN/m | 52 | GB/T 14216-2008 | |||
PCT accelerated aging ≥ | % | 10 | 121℃, 100%RH, 2atm, 48h | |||
Remark: WVTR and PCT are type inspection, other indexes are delivery inspection. |
3.Storage conditions
Stored in a clean, dry, ventilated place, keep away from fire and heating, avoid direct sunlight.