The performance of Fluon® ETFE Film is highly valued by the construction and architectural industry like football stadium in Munich, and the main stadium and the venue for aquatics events at the Summer Games in Beijing. And it is also widely used in the field of photovoltaics.
White and black colored Fluon® ETFE Film is ideal for use as back sheets thanks to its durability and long service life. Transparent Fluon® ETFE Film is of course also used extensively in photovoltaics as front sheets for flexible modules or BIPV.
Durability Test of 100N for front sheet | |||
| Before test | After 5000 hrs exposure test | |
Light transmittance (%) | 93 | 93 | |
Tensile strength (MPa) | 60 | 60 | |
Tensile elongation (%) | 395 | 390 | |
Accelerated weather test with Sunshine wether-o meter | |||
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Accelerated Exposure Test of 25PW for back sheet | |||
Retention of Mechanical Properties | |||
Exposure time | 0 hrs | Retention rate after 500 hrs | Retention rate after 1000 hrs |
Tensile Elongation | 300~400 % | 95~100 % | 95~100 % |
Tensile strength | 55~65 MPa | 90~95 % | 85~95 % |
Change in Optical Properties | |||
Exposure time | 0 hrs | 500 hrs | 1000 hrs |
Transparency at 360 nm (%) | <=0.1 | <=0.1 | <=0.1 |
Visible light transmission (%) | 24~26 | 23~26 | 22~25 |
Solar transmittance (%) | 36~37 | 36~37 | 35~36 |
Solar reflectance (%) | 60~62 | 61~63 | 61~63 |
Color difference ΔE* | - | - | < 0.7 |
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Test condition of accelerated exposure | |||
Metal halide lamp, 1000W/m2 (300~400nm), 63°C (Black panel temperature) | |||
Cycle condition: | |||
10 hours | Light irradiation (50% R.H.) | ||
10 seconds | Shower | ||
2 hours | Blackness/Condensation (30°C, 100 % R.H.) | ||
10 seconds | Shower | ||
"EYE Super UV Tester" made by Iwasaki Electric Co., Ltd. | |||