Ceramapure PL90 vs Polyurethane

Test Ceramapure PL90 Polyurethane
SALT SPRAY 5% solution ASTM B 117 No undercutting at scribe. No damage to panel. 1 year duration 1- 1/2″ undercutting at scribe. Damage to panel.
3-3/4 months duration.
Test Terminated
TAP WATER
IMMERSION
120° F Rated using
ASTM D714
No undercutting at scribe. No damage to panel. 1 year duration 3/4″ scribe undercut.
2-1/2 months duration.
Test Terminated
SODIUM HYDROXIDE IMMERSION 25% solution 140° F Rated using
ASTM D714
No effect after 1 year Softened film, discoloration and etched surface2-1/2 months, Test Terminated
CATHODIC DISBONDMENT Attached Cell Method
ASTM G-95
30 Days/Average 3 samples
Less than 2 mm disbondment 10.0 mm disbondment
IMPACT RESISTANCE
ASTM G-14
60 in/lbs 75 in/lbs
EXTERIOR EXPOSURE Continuous exterior exposure to weather and sunlight. Birmingham, Alabama 2.5 years Chalking, negligible loss of film.
No effect on metal protection.
2.5 years Chalking. Negligible loss of film.
No effect on metal protection.
HYDROGEN PEROXIDE IMMERSION  25% Solution
77°F ASTM D-1308
No Effect Passed Large Blisters Failed

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