Photovoltaic backsheet

It is composed of multi-layer material composite, fluorine-containing composite membrane and non-fluorine-containing composite membrane structure, such as TPT, TPE, KPK, etc., excellent comprehensive stability, suitable for large-scale ground power station and distributed power station solar cell module packaging.

Description

Item Unit Data
Color White/Black
Thickness μm 360
Tensile strength MD N/cm ≥210
TD N/cm ≥210
Elongation MD % ≥50
TD % ≥50
Thermal shrinkage rate MD % ≤1.5
TD % ≤1.0
Thermogravimetric ratio % ≤1.0
Interlayer stripping force N/cm ≥4
Backsheet/EVA bonding force N/cm ≥40
Backsheet/silicone bonding force N/cm ≥15
Water vapor rate g/m2.day ≤1.5
Puncture voltage kV ≥18
System voltage VDC ≥1500