Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Graphene - Something New for Decades old Epoxy Coating Technology

Picture for Graphene - Something New for Decades old Epoxy Coating Technology
Available for download

Two component Epoxy polymer systems have been used as the basis for high performance protective coating systems since the 1950s. Numerous Epoxy resin types and ambient condition curing agents are available today which allow great flexibility in the formulation of coating products. This has led to the development of a wide range of applications ranging from simple anticorrosive systems to high performance heat and chemical resistant coatings and linings.

Product Number: 51323-19109-SG
Author: Andrew Smith, Denis Wright, Grant Mathieson, Andrew Vu
Publication Date: 2023
$0.00
$20.00
$20.00

Graphene was first isolated in 2004 and was hailed as a wonder material due to its unique combination of properties. These include large surface area per unit weight, high tensile strength, high modulus of elasticity, good thermal conductivity and electrical conductivity. Practical application has been slow to develop, however almost two decades later, the full potential of this material is being harnessed to enhance products across a broad range of industries. This paper shows how graphene can significantly enhance the performance of functional coatings.

The inclusion of very low levels of effectively dispersed Graphene in high solids epoxy coating
formulations has been found beneficial to their anticorrosive performance. This is seen as reduction in scribe corrosion creep and improved adhesion when assessed as part of testing to ISO(1) 12944 Annex B. Similar benefits have been observed across a range of epoxy coating formulation types including commercially obtained materials.

An investigation of the mechanism of this improvement largely discounts the contribution of barrier or chemical interactions. It is instead proposed that the observed improvements can be explained by simple mechanical reinforcement of the polymer system, with Graphene particles acting as points of reinforcement or stress relief that limit crack propagation on a micro scale. The propagation and termination of cracking of a Graphene Epoxy system close to fracture surfaces was observed by optical microscopy. Where cracks propagated to a graphene particle, it was commonly observed that the crack terminated at the particle. This suggests wider potential application in high performance coatings where Graphene could improve long term durability by reducing the incidence of cracking.

Graphene was first isolated in 2004 and was hailed as a wonder material due to its unique combination of properties. These include large surface area per unit weight, high tensile strength, high modulus of elasticity, good thermal conductivity and electrical conductivity. Practical application has been slow to develop, however almost two decades later, the full potential of this material is being harnessed to enhance products across a broad range of industries. This paper shows how graphene can significantly enhance the performance of functional coatings.

The inclusion of very low levels of effectively dispersed Graphene in high solids epoxy coating
formulations has been found beneficial to their anticorrosive performance. This is seen as reduction in scribe corrosion creep and improved adhesion when assessed as part of testing to ISO(1) 12944 Annex B. Similar benefits have been observed across a range of epoxy coating formulation types including commercially obtained materials.

An investigation of the mechanism of this improvement largely discounts the contribution of barrier or chemical interactions. It is instead proposed that the observed improvements can be explained by simple mechanical reinforcement of the polymer system, with Graphene particles acting as points of reinforcement or stress relief that limit crack propagation on a micro scale. The propagation and termination of cracking of a Graphene Epoxy system close to fracture surfaces was observed by optical microscopy. Where cracks propagated to a graphene particle, it was commonly observed that the crack terminated at the particle. This suggests wider potential application in high performance coatings where Graphene could improve long term durability by reducing the incidence of cracking.

Product tags
Also Purchased
Picture for Rust Creepage Mechanism for Offshore Atmospheric Coatings
Available for download

Rust Creepage Mechanism for Offshore Atmospheric Coatings

Product Number: 51323-18754-SG
Author: Benjamin T. A. Chang
Publication Date: 2023
$20.00

The service life of current offshore platform coatings are normally less than 10 years. It is very expensive ($100/ft2) to rehabilitate the offshore platform coatings in the field. Therefore, facility owners are very anxious to select the long-life coatings. The candidate coatings are normally tested in the lab following the ISO 12944-91 or the AMPP TM216122 standard.
Picture for Aluminum Cold Spray for Aircraft Structural Repair
Available for download

Aluminum Cold Spray for Aircraft Structural Repair

Product Number: 51323-18963-SG
Author: Sarah E. Galyon Dorman, Morish J. Ausherman, Justin W. Rausch
Publication Date: 2023
$20.00


Cold Spray (CS) is a solid-state deposition repair method that deposits 1-50um powder particles onto a substrate. A compressed gas acts as carrier to accelerate the particles through a converging-diverging nozzle to the substrate at supersonic speeds. Critical impact velocity is the velocity that is required to achieve sufficient bonding. CS process parameters as well as powder properties can be adjusted to achieve such velocities. The type of carrier gas will also change the spray velocity. Helium has the lowest molecular weight which allows for higher gas and particle velocity upon impact.
Picture for Tafel-Piontelli model for the prediction of the corrosion rate of active metals in weakly acidic environments. Application to sweet corrosion in the Oil and Gas industry
Available for download

Tafel-Piontelli model for the prediction of the corrosion rate of active metals in weakly acidic environments. Application to sweet corrosion in the Oil and Gas industry

Product Number: 51323-19254-SG
Author: Elena Messinese, Marco Ormellese, Andrea Brenna
Publication Date: 2023
$20.00

Corrosion-related losses represent approximately 30% of the hydrocarbons extraction and treatment industry's failures, with a total annual cost of US$ 1.372 billion. The oil&gas industry has widely recognized the importance of implementing effective prediction and management systems to reduce costs and guarantee compliance with safety, health, and environmental regulations. In this context, it is safe to narrow the oilfield corrosion problem mainly towards the two most severe degradation cases observed during operation: the sweet CO₂-related and H₂S-related corrosion.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support