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Improving Coating Adhesion By Altering Surface Preparation

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Corrosion is a universal challenge for metal structures. Metal, due to its natural strength, is a common choice for building materials yet sensitive to the environment it is placed in, requiring mitigating actions to ensure proper lifecycle. Coatings are utilized as the primary defense against corrosion; the type based on substrate material and environment.

Product Number: 51323-19364-SG
Author: Elisabeth Tarpey, Dr. Rebekah Wilson
Publication Date: 2023
$20.00
$20.00
$20.00

As primary cause of a coating failure, surface preparation is a crucial, but often overlooked step of coating application. Coatings require a clean substrate to some degree and a surface profile to ensure maximum adhesion strength. But do all profiles of the same depth provide the same coating adhesion? The USACE Paint Technology Technical Center of Expertise examines the benefits of utilizing alternative blasting media that can provide advanced adhesion through the use of grit composed of variated material and size. Laboratory studies will be used to illustrate this technology on steel test panels coated with epoxy and vinyl resin military systems. Surface morphology and surface area calculations, and results from performance testing, including cyclic corrosion testing, will be presented and compared to conventional blasting material along with a cost savings assessment.

As primary cause of a coating failure, surface preparation is a crucial, but often overlooked step of coating application. Coatings require a clean substrate to some degree and a surface profile to ensure maximum adhesion strength. But do all profiles of the same depth provide the same coating adhesion? The USACE Paint Technology Technical Center of Expertise examines the benefits of utilizing alternative blasting media that can provide advanced adhesion through the use of grit composed of variated material and size. Laboratory studies will be used to illustrate this technology on steel test panels coated with epoxy and vinyl resin military systems. Surface morphology and surface area calculations, and results from performance testing, including cyclic corrosion testing, will be presented and compared to conventional blasting material along with a cost savings assessment.

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