AMPP Store - Products tagged with 'coatings performance'

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Coating Conductance Characterization Using Trenchless Crossing Data

Product Number: 51324-21037-SG

Author: Daniel Fingas

Publication Date: 2024

$40.00

Coating resistance or conductance values are critical input parameters for the accurate modelling and design of AC mitigation and cathodic protection (CP) systems for pipelines. However, there are relatively few sources for real-world coating resistance values in the literature. To attempt to fill this gap, data from coating quality tests performed on thousands of trenchless pipeline installations was used to characterize the coating resistance of new, primarily fusion bonded epoxy (FBE)-coated pipelines. The tests assess damage incurred as part of the trenchless installations and cover the full range from pristine coating to significant scratches with bare metal. This allows the dataset to provide insight into both a baseline for open-trench coating quality and a range of practical coating qualities for trenchless installations. It was found that specific coating resistance values varied from less than 100 O·m2 to >1 MO·m2 but that there was no specific threshold that could be associated with pristine FBE coating. However, the data clearly validated the ‘300 mV shift’ design guideline for CP systems, which also demonstrates the link between CP current requirement and coating quality. Considering this, the implication of requiring a certain current density irrespective of coating quality is illustrated.

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Evaluating The Effects of Powder Processing Conditions with Accelerated Corrosion Testing

Product Number: 51323-19190-SG

Author: Connie Przeslawski

Publication Date: 2023

$20.00

Fluoroethylene vinyl ether (FEVE) resins were developed to overcome some of the challenges of traditional fluoropolymer resins exhibited in paint coatings. FEVE resins are synthesized from two monomers, fluoroethylene, and vinyl ether. When these monomers undergo radical polymerization, they produce amorphous A-B-type polymers shown below (Figure 1).

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The Development of a New Accelerated Corrosion Test Method Using Controlled Relative Humidity

Product Number: 51323-19475-SG

Author: Alexander Lilly, Mirella Vargas, Erica Macha, Dr. Steven Kopitzke, James Dante, Dr. Victor Rodriguez-Santiago

Publication Date: 2023

$20.00

Hexavalent chromium is utilized for the purpose of providing corrosion inhibition on many DoD assets in the form of surface treatments and primers. However, hexavalent chromium is also a known carcinogen and environmental toxin. As a result, processes which involve the application of hexavalent chromium will likely face increased regulation in the future.

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Variables That Can Affect Pull Off Adhesion of Coatings

Product Number: 51323-19147-SG

Author: Swapnil Shukla, Nicole Rakers, Michael McCarthy, Bernard McPeak

Publication Date: 2023

$20.00

Adhesion is a physical property that is crucial in many coatings, sealants, and adhesive applications, be it automotive, marine, or aerospace for example. Pull-off adhesion testing is an important tool in evaluating a coating’s performance, particularly while comparing pre- and post-exposure results. No matter what the application, the method for testing adhesion along with selecting the appropriate testing criteria has been the subject of multiple studies and reviews in the historical literature.

Products tagged with 'coatings performance'

Coating Conductance Characterization Using Trenchless Crossing Data

Evaluating The Effects of Powder Processing Conditions with Accelerated Corrosion Testing

The Development of a New Accelerated Corrosion Test Method Using Controlled Relative Humidity

Variables That Can Affect Pull Off Adhesion of Coatings

Association for Materials Protection and Performance