Table 1. Comparison of Surface Hardness and Optical Properties of PC Sheet after Introduction of UV-resistant co-extrusion and Hard Coating Layers
PH
T (%)
Weathering Test
Before
After
Color Change (Δ
E
)
L
a
b
L
a
b
PC
2B
87
95.40
-0.05
0.03
94.32
-1.10
4.79
4.99
Surface coated PC
2H
86
96.36
-0.43
0.46
95.10
-0.56
1.53
1.66