Brochure

164
© 2011 – SOURIAU
Solar radiation affects all materials, but plastics can be
susceptible to extreme degradation over time.
The choice of materials for the UTS series was therefore
a critical consideration.
All over the world we are not exposed to the same
amount of energy given by the sun. The chart shown
here clearly illustrates this.
So we performed test according to the ISO 4892-2 and
simulated 5 years exposure to outdoor environments
(temperature, humidity, etc...)
After this period there was no signifi cant colour variation,
no crazing, no cracking and no major variation of
mechanical properties.
Yearly mean of daily irradiation in UV (280-400 nm)
on horizontal plane (J/cm²) (1990-2004)
90°
60°
30°
0°
- 30°
- 90°
- 60°
90°60°30°0°- 30°- 90° - 60° 180°150°120°- 180° - 150° - 120°
J/cm²
0
10 20 30 50 60
70
80 90
100
11 0
12 0 13 0 15 0
160
17 0
180 190
40
14 0
UTS Series
Technical information
UV resistance