Vueguard® 911 —— Anti-Weathering Water Clear Hardcoat (PC)

Vueguard® 911 as Water-Clear (WC) for plastic sheets and molded articles, offering superior resistance to ultraviolet degradation and abrasion. While Vueguard® 911 has been designed primarily for polycarbonate substrates, other plastics may benefit from its application.

Environmental Exposure

Unexposed Humidity (1) Weathering (2)
Light Transmittance (%) (3) 91 91
Haze (%) (4) 0.4 0.5 1-2 (7)
Adhesion (%) (5) 100 100 100
Yellowness Index Change (6) 0 0 3-4 (7)

 

1. Humidity: 120 hours @ 52°C and 100% RH (ASTM D-2247)
2. Weathering: ASTM G-53 (cycle of 8 hrs UV @ 70°C and 4 hrs condensing humidity @ 50°C for 2,500 hrs using Q-Panel QUV test equipment)
3. Light Transmittance: ASTM D-1003
4. Haze: ASTM D-1003
5. Adhesion: ASTM D-3359
6. Yellowness Index: ASTM D-1925
7. After 2.500 hours of QUV exposure start of color change of the polycarbonate substrate

Scratch/Abrasion Tests

Haze Change (3)
Uncoated Coated
Steel-Wool Scratch (8) 38.1 0.4
Abrasion (9) 250 Cycles 32.0 3-4

 

Chemical Resistance (8), (9)

Uncoated Coated
Gasoline X M
Toluene X S
Acetone X S
Ethanol L L
Trichloroethylene X S
5% Ammonia S L
10% Caustic Soda S L
50% Caustic Soda X M
10% Sulfuric Acid L L

 

10. Chemical Resistance: Similar to ASTM D-1308 but more severe. Evaporation minimized through continuous contact with chemical by means of a pad in the mouth of an inverted bottle placed on the specimen.

11. L—Long-term contact, greater than 24 hours
M—Medium-term contact, up to 8 hours
S—Short Term contact, up to 1 hour
X—Immediate attack: do not use

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