Fade-ometer, carbon-arc

Influence of Wavelength of Radiation. Our initial indications of crosslinking were observed during exposures in an Atlas Electric Devices Co. carbon-arc Fade-ometer equipped with a Corex D filter. Later, the same behavior was found when exposures were made in an Atlas 600WRC xenon-arc Fade-ometer having Pyrex-glass filters. 

Table I Tendency of Methacrylate Polymers to Become Insoluble Samples on Aluminum Foil, Single-Carbon-Arc Fade-ometer (Corex D Filter), 62°C...

Hindered Phenols. Because of the relationship between photooxidation and discoloration, we became interested in the effect of hindered phenols which are well-known oxidation inhibitors. A preliminary study was carried out to determine the relative effectiveness of a variety of such compounds, many of which are commercially available. The additives were incorporated into polystyrene at 0.1% concentration, and 50-mil molded plaques were exposed to a carbon-arc Fade-ometer. 

In our stabilization studies on polystyrene, we also examined various light sources and found that in addition to the carbon-arc Fade-ometer, the xenon-arc and a recently proposed high output fluorescent lamp also... 

A carbon-arc Fade-ometer with emission in the region of 3000-4000 A. 

Test according to A.A.T.C.C. Standard Test Method 16-A-1964 (Fade-Ometer, carbon arc). 

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