Polyurethane Pipeline Coatings

Do Changes in Appearance Indicate Changes in Performance?

From JPCL, February 2017

By Stuart G. Croll, Dr. Chunju Gu and Dr. Vinod Upadhyay, North Dakota State University; and Brent D. Keil, Northwest Pipe Company

Occasionally, construction delays can result in pipe sections remaining aboveground for extended periods of time. Under these atmospheric conditions and exposure to solar UV light, coating properties such as color and gloss may change considerably and naturally raise concerns about diminished protective performance. This article discusses a collaborative study encompassing both lab and real-world testing to answer this question....


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Tagged categories: Coating Materials; Coating/Film Thickness; Color retention; Electrical Impedance; Gloss retention; North Dakota State University; Performance testing; Pipeline; Polyurethane

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