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10148 New Technology for Vapor Corrosion Inhibiting (VCI) Transparent Plastic Packaging Combined with Acid Gas Scavenging (AGS)

Picture for 10148 New Technology for Vapor Corrosion Inhibiting (VCI) Transparent Plastic Packaging
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Product Number: 51300-10148-SG
ISBN: 10148 2010 CP
Author: Donald A. Kubik, Barbara Nygaard, A. James Henderson
Publication Date: 2010
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$20.00
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Acid-gas scavenging films (AGS) have existed in two forms, both with fillers that chemically react to reduce diffusion of acid-gases into sealed bags. These provide corrosion protection from acid-gases exterior to the package. They have no effect on corrosion in the presence of humidity and oxygen inside the enclosure. One form, called AGS-Cu in this paper, is opaque and contains copper and carbon particles. The other, called AGS, uses transparent inorganic oxide fillers, primarily to mitigate tarnishing of silver and silverware. A new technology combines AGS and Vapor Corrosion Inhibitor additives (VCI and VPI) for superior corrosion protection of multiple metals from the effects of internal humidity and external acid-gases. Test data show that combined VCI & AGS give best corrosion protection for a wider range of metals and atmospheric contaminants than VCI and AGS alone. Corrosion testing should consider the confounding effects of VCI, AGS and desiccation.

Keywords: atmosphere, acid-gas, corrosion, tarnish, inhibitor, scavenger, volatile, vapor, AGS, VCI, VPI, ferrous, non-ferrous, copper, silver
Acid-gas scavenging films (AGS) have existed in two forms, both with fillers that chemically react to reduce diffusion of acid-gases into sealed bags. These provide corrosion protection from acid-gases exterior to the package. They have no effect on corrosion in the presence of humidity and oxygen inside the enclosure. One form, called AGS-Cu in this paper, is opaque and contains copper and carbon particles. The other, called AGS, uses transparent inorganic oxide fillers, primarily to mitigate tarnishing of silver and silverware. A new technology combines AGS and Vapor Corrosion Inhibitor additives (VCI and VPI) for superior corrosion protection of multiple metals from the effects of internal humidity and external acid-gases. Test data show that combined VCI & AGS give best corrosion protection for a wider range of metals and atmospheric contaminants than VCI and AGS alone. Corrosion testing should consider the confounding effects of VCI, AGS and desiccation.

Keywords: atmosphere, acid-gas, corrosion, tarnish, inhibitor, scavenger, volatile, vapor, AGS, VCI, VPI, ferrous, non-ferrous, copper, silver
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