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Secrets to Success - Examining the History and Chemistry Behind the Performance of Vinyl Resin Coatings

Secrets to Success - Examining the History and Chemistry Behind the Performance of Vinyl Resin Coatings
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This work provides an overview of solution vinyl coating history and formulation as well as results and discussion for preliminary testing. Corrosion performance and material properties using modern laboratory techniques are needed to provide a benchmark for the development or evaluation of next generation polymer coatings that may someday provide a green alternative to the legacy vinyl systems.

Product Number: 51216-013-SG
Author: David Tordonato, Bobbi Jo Merten, Allen Skaja, Alfred Beitelman
Publication Date: 2016
Industries: Coatings , Coatings and Linings
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$20.00
$20.00

Solution vinyl coatings were utilized by the Bureau of Reclamation in the past and are currently used by the United States Army Corps of Engineers as a coating system that can achieve a 30-50 year service life in impacted immersion service conditions. These coatings were commonly used on gates and other equipment, which required a durable coating to withstand frequent ultraviolet (UV) light exposure, immersion service, and impact resistance. Unfortunately, solution vinyl coatings contain high fractions of volatile organic compounds (VOCs) as solvents and diluents. Federal regulation 40 CFR 50 limits the weight fraction of VOCs per volume of applied coating material according to category of use. This relegated solution vinyl coatings to impacted immersion service use only. Currently, there are no known alternatives that match the performance of solution vinyls in an alternating immersion and atmospheric exposure environment. Epoxies chalk when exposed to UV light, and aliphatic polyurethanes and acrylics degrade more rapidly in long-term immersion. Fluoropolymers are very expensive, most require post cure or baking, and are rarely specified for immersion service. An environmentally friendly replacement for solution vinyl coatings could significantly reduce a coating’s life cycle cost and VOC emissions. This work provides an overview of solution vinyl coating history and formulation as well as results and discussion for preliminary testing. Corrosion performance and material properties using modern laboratory techniques are needed to provide a benchmark for the development or evaluation of next generation polymer coatings that may someday provide a green alternative to the legacy vinyl systems.

Solution vinyl coatings were utilized by the Bureau of Reclamation in the past and are currently used by the United States Army Corps of Engineers as a coating system that can achieve a 30-50 year service life in impacted immersion service conditions. These coatings were commonly used on gates and other equipment, which required a durable coating to withstand frequent ultraviolet (UV) light exposure, immersion service, and impact resistance. Unfortunately, solution vinyl coatings contain high fractions of volatile organic compounds (VOCs) as solvents and diluents. Federal regulation 40 CFR 50 limits the weight fraction of VOCs per volume of applied coating material according to category of use. This relegated solution vinyl coatings to impacted immersion service use only. Currently, there are no known alternatives that match the performance of solution vinyls in an alternating immersion and atmospheric exposure environment. Epoxies chalk when exposed to UV light, and aliphatic polyurethanes and acrylics degrade more rapidly in long-term immersion. Fluoropolymers are very expensive, most require post cure or baking, and are rarely specified for immersion service. An environmentally friendly replacement for solution vinyl coatings could significantly reduce a coating’s life cycle cost and VOC emissions. This work provides an overview of solution vinyl coating history and formulation as well as results and discussion for preliminary testing. Corrosion performance and material properties using modern laboratory techniques are needed to provide a benchmark for the development or evaluation of next generation polymer coatings that may someday provide a green alternative to the legacy vinyl systems.

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