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Fiber reinforced polymer (FRP) and other polymeric materials are used in many ways to reduce and manage corrosion damage for industrial, infrastructure and municipal applications. It is common practice to use the term “resin” for polymers in these materials. This paper uses polymer interchangeably with resin. This paper will also only consider glass fiber reinforcements.
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Translational Corrosion Science, the subject of the SSPC 2015 presentation by the Department of Defense Corrosion (DoD) Prevention and Control Program, is a science-based process to accelerate the development and application of high-quality solutions to difficult material degradation problems, and to do so more economically. DoD has launched the translational corrosion science program, assisted by the National Defense University and Potomac Institute for Policy Studies, to fully develop the process concept and to implement the approach.
Changing conditions in the Oil and Gas industry are yielding greater corrosion protection challenges to the owners and operators of refineries, terminals, pipelines, railcars etc. Internal lining schemes which have traditionally been used for the storage and transport of crude oil and refined fuels may no longer be appropriate. The aggressive nature of crude oil (higher temperatures and more sour nature), high purity refined products and the increased use of biofuels globally necessitate the demand for better linings and more certain test results.
Historically, the Bureau of Reclamation observed coating service lives of 50 to 80 years when lining its water conveyance structures with coal tar enamel. Changes to regulations have largely eliminated coal tar enamel as a field coating option, and existing coal tar enamel is beginning to show signs of degradation or has already been repaired or recoated. Reclamation has been working to find an appropriate alternative to coal tar enamel.
This paper will focus on polymeric cementitious urethane floor systems that are applied in very harsh and demanding environments. We will outline the history, advantages and disadvantages of these systems, as well as some of the applications for which these systems are best suited. Finally, we will discuss how these systems are applied.
A case study of how poor initial quality control resulted in a complete coatings rework of the underwater bottom (exterior hull) of a large Floating Storage Unit (FSU) and how a good quality control program, during rework, resulted in the documented long term performance of the second application underwater hull coating system.
The objective of this study was to examine the effects of an ultra-high pressure (UHP) waterjetting surface preparation (>25,000 psi) on the performance properties of select marine/offshore coating epoxy systems. Uncoated steel panels had been allowed to rust in an outdoor atmospheric environment and then were subjected to UHP waterjetting
The twenty-first century presents a major challenge to coatings manufacturers. The amount of solvent allowable in many coatings has been reduced considerably. In order to attain these lower VOC’s, coatings formulators are searching for resins that have low VOC demand, as well as ways of formulating that can replace the high volumes of solvent used in the past
Poor performance of materials…is why…more realistic application conditions are needed. An ultra-tolerant material, compatible with flash rust, humidity, poor profile and cold application conditions, potentially with Ultra High Pressure (UHP) water jetting, is presented in this paper.
Aircraft representative galvanic test articles and witness coupons were placed out for atmospheric exposure testing at the U.S. Naval Research Lab (NRL) site in Key West, Florida. One set of test specimens was exposed to only ambient environment for a 62 day period; a second set of test specimens was exposed to both ambient environment (initial 62 days), and a short duration, twice daily, seawater spray protocol over a further 55 day period. Environmental loading was monitored using sensors that measured temperature, relative humidity, rainfall, and time of wetness (TOW), at 30 minute intervals. Following retrieval, the test articles were inspected in the laboratory using laser profilometry to characterize the spatial distribution and depth of corrosion damage. Mass loss measurement using the witness coupons was used to estimate relative corrosion rates for the two periods.
The coatings industry has made widespread use of a variety of accelerated test methods to quickly and effectively evaluate coating performance. Such accelerated methods are advantageous for predicting coating system performance where real-time testing is impractical. For example, it is not practical to evaluate coatings in harsh environments where coatings are expected to last for decades when the pace of innovation and new coating development is faster than the test time would need to be. Therefore a variety of test methods exist to evaluate coatings on metal substrates, such as steel or aluminum. Coatings that will be subjected to corrosive environments require testing in environments to simulate the effects of corrosion, typically involving exposure to moderate salt concentration and elevated temperatures for a specified amount of time. Such tests, testing environments, and evaluation methods include ASTM B117,ISO 9227, and ISO 12944, to name a few.
Then design professionals, or prospective users of polymeric flooring and coating systems review product data sheets, they rely largely on reported test values to make decision as to the appropriateness of a particular product. They review physical strength characteristics such compressive and tensile strength to make a determination if a particular product possesses the required properties to provide the intended service on a project.