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08217 Environmentally Preferable Corrosion Protection of Steel

Picture for 08217 Environmentally Preferable Corrosion Protection of Steel
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Product Number: 51300-08217-SG
ISBN: 08217 2008 CP
Author: Pattie L. Lewis and Jerome P. Curran
Publication Date: 2008
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The U.S. space program is responsible for a number of facilities with metallic structural and nonstructural components in highly and moderately corrosive environments. To protect against the effects of corrosion, such structures are commonly covered with a coating system consisting of a zinc primer, intermediate coating, and topcoat. The most common topcoats used in such systems are polyurethanes that contain isocyanates and other hazardous materials. Their use, however, is being threatened by safety and environmental concerns and increasing regulations. In order to ensure mission readiness while reducing environmental and safety risks, the National Aeronautics and Space Administration (NASA) partnered with Headquarters Air Force Space Command (AFSPC) to demonstrate/validate environmentally preferable coating systems for use on steel substrates used on launch pads, test stands, and ground support equipment. This paper will present the results and conclusions from the laboratory and field testing. The study revealed at least two isocyanate-free coating systems that performed similar or better than the control coatings.
The U.S. space program is responsible for a number of facilities with metallic structural and nonstructural components in highly and moderately corrosive environments. To protect against the effects of corrosion, such structures are commonly covered with a coating system consisting of a zinc primer, intermediate coating, and topcoat. The most common topcoats used in such systems are polyurethanes that contain isocyanates and other hazardous materials. Their use, however, is being threatened by safety and environmental concerns and increasing regulations. In order to ensure mission readiness while reducing environmental and safety risks, the National Aeronautics and Space Administration (NASA) partnered with Headquarters Air Force Space Command (AFSPC) to demonstrate/validate environmentally preferable coating systems for use on steel substrates used on launch pads, test stands, and ground support equipment. This paper will present the results and conclusions from the laboratory and field testing. The study revealed at least two isocyanate-free coating systems that performed similar or better than the control coatings.
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