This new study focused on the enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalised graphene oxide. Polyetheramine (D230), an epoxy curing agent, was grafted on graphene oxide (GO) surfaces, which can be stably dispersed in a waterborne curing agent for more than 8 months. Waterborne epoxy coatings reinforced by D230-functionalised GO (DGO) were applied on carbon steel surfaces.
A report has been published recently comparing the abrasion resistance of conventional vinyl-based coating systems, polymer with polymer matrix composite coatings, fibrous polymer coatings, and ultrahigh molecular weight polyethylene (UHMWPE).
There is an increased demand for abrasive wear-resistant coatings that add durability to steel hydraulic structures, particularly for those subjected to flowing water with debris and alternate wet/dry cycles. These coating systems provide not only corrosion and chemical resistance, but also good erosion and abrasion resistance to the metallic surfaces, which are constantly exposed to flowing water containing sand particles and debris. Generally, vinyl-based coatings are used on hydraulic steel structures to protect them from corrosion and abrasion.
This new study, by U.S. Army Corps of Engineers, evaluated the abrasion of six coating systems using a reciprocating abrader under dry and wet conditions. The wettability of the coating systems and its effect on the wear rate under the presence of water was also studied. In addition, scanning electron microscopy of the wear tracks on different coatings was conducted to study and identify their failure mechanisms.
Based on the results, UHMWPE and polymer–ceramic composite coatings were found to perform significantly better than the conventional vinyl-based coatings.
The study was published in the Journal of Coatings Technology and Research, Volume 17 (2020).
PDA Europe is organising its Annual Conference and Exhibition on 17-18 November 2020 at the Crowne Plaza Hotel, Porto, Portugal
The applications of polyurea are widespread and the technology keeps on innovating and improving, and this event is a unique forum in Europe for all the stakeholders of Polyurea and has been designed to discuss and present all its facets.
This year, the event will take place over two days with the General Assembly taking place on the 17th. Â The two days are packed with presentations, interactive sessions, education courses, spray gun workshop, table top exhibition and networking moments. There are sponsorship and table top exhibition opportunities, and more details about the event can be found at, www.pda-europe.org
he latest video in the Napo safety cartoon series, covers working on a construction site and shows some of the common hazards and risks to be found there. The video can be found at, https://www.napofilm.net/en/napos-films/napo-safe-site
Napo is the hero of the cartoon series. He is symbolic of an employee working in any industry or sector. Napo is not limited to one specific job or work environment but his personality and physical appearance remain the same in all the films. Napo is a normal person – neither good nor bad, neither young nor old. In this respect, he is neutral.
Napo is an original idea conceived by a small group of OSH communications professionals and their video resources are to enable organisations to use Napo films to raise awareness about health and safety topics within groups of their own staff and supply chains. The resources enable organisations to deliver advice on health and safety topics, and will help generate discussion around the topics. They are also suitable for use on vocational training courses. More information about Napo, and list of all the video resources can be found at, https://www.napofilm.net/en
Following the recent formation of their new Standards Board, NACE International, has appointed David Barnes, has been Technical Manager at Elcometer, as their Vice Chair.
David has been Technical Manager at Elcometer for over nine years, and has worked closely closely with NACE, SSPC, ASTM, BSI and ISO on standardisation, writing and presenting technical papers at industry conferences around the world.
David will serve a three-year term as the NACE Standards Board Vice Chair, followed by a further three years as its Chair. His term as Vice Chair is scheduled to begin on 20th June, 2020.
Playing a vital role in providing oversight and management of the NACE Standards Programme, David’s role as Vice Chair will include developing strategies, objectives and tactics to enable the programme to better respond to the standardisation needs of the corrosion industry. He will also overlook the performance of the NACE Standard’s activities – including global growth in the standards portfolio and being responsive to the industry’s standardisation needs.
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