Resistance to
weathering test |
CPAI 84 4.2.2.3 |
After 12 cycles (144 hours) of exposure as below, the specimens shall have no
wrinkles or gaps, no physical or structural deterioration, and the visual color level rating shall be Class 3.5 minimum.
Each cycle shall consist of:
• 8 hr of UVA 340 lamp, 60 °C
• 5 minutes water spray
• 4 hr condensation at 50 °C
• 5 minutes water spray
When cut pieces are used for testing:
• Photograph the pieces and describe the location.
• Wax Sealer must be applied to the cut surface to stop water from entering.
Note: perform this test immediately following the resistance to weathering testing, using the same sample Modification= expanded scope to all product types.
Client requirement = testing cycle |
M
No structure failure
Color change: Class 4.0 |
PASS |