Hydroton launches a graphene-enhanced anti-corrosion primer

Greece-based industrial paint producer Hydroton has launched a new graphene-enhanced zinc epoxy paint - the 23303 ZINCTON GNC. This is a two-component epoxy based coating that offers improved cathodic protection due to the addition of the graphene, compared to epoxy zinc rich primers.

Hydroton 23303 ZINCTON-GNC photo

The new primer also offers improved adhesion to metal and as the zinc content is low, it is still cost effective. It is recommended for applications in highly corrosive environments.

G6-Epoxy: A New Generation of Graphene-Enhanced Electrically Conductive Adhesives Offers Competitive Advantages

The following is a sponsored post by Graphene Labs

Graphene nanoplatelets (GNPs), unique materials produced from natural graphite, are finding their way into a wide variety of commercial products including nanocomposites, lubricants, additives to battery electrodes, functional textiles, as well as many other applications.

G6 Epoxy (G6E RTC)

GNPs have quite a few outstanding properties that allow them to be employed in a broad spectrum of applications, including:

  • Superb mechanical strength
  • Excellent electrical conductivity
  • Ability to vastly improve the tensile strength and fracture toughness of polymers
  • Low percolation threshold
  • Resistance to corrosion

CealTech's marketing and sales manager explains the company's technology and business

Michel Eid (CealTeach)Norway-based CealTech was established in 2012 to commercialize a patented 3D graphene production method. The company recently received its first prototype proprietary industrial-scale Plasma-Enhanced Chemical Vapor Deposition (PE-CVD) graphene production reactor.

We discussed CealTech's technology and business with the company's marketing and sales manager, Michel Eid. Michael holds a Ph.D. in Solid Mechanics from the Ecole Polytechnique in France, and held various roles in engineeing, manufacturing, sustaining, sales, marketing and business development. Michel joined CealTech in January 2017.

Q: Hello Michael. CealTech is commercializing a patented 3D graphene production method. Can you give us some details on the process and the material you are producing?

Our production process is based on David Boyd’s technique as per Nature communications (DOI: 10.1038/ncomms7620), ‘Single-step deposition of high-mobility graphene at reduced temperatures’. In summary, the substrate is directly exposed to a low-pressure, microwave hydrogen plasma containing small amounts of methane as carbon source. During this process, vertical grown graphene flakes nucleate and arrange perpendicularly to the surface of the substrate forming a so-called 3D network of non-agglomerated graphene flakes.

Graphene-enhanced anti-corrosion system deployed in bridges and wind power towers across China

China-based The Sixth Element Materials launched its graphene-zinc anti-corrosion primer back in 2015 together with his partner Toppen Technology, and the company has since performed extensive testing. TSE updates us that the material has now been deployed in China and has been used to cover several bridges and wind-turbines steel towers.

Anti-corrosion 2k-graphene-epoxy coating in China (TSE)

The Sixth Element graphene type SE1132 is added to Toppens 2k-epoxy primer system. TSE says that by adding 1% of graphene, one could reduce the zinc content in current anti-corrosion coatings from ~80% to 25%, and the the corrosion protection time is doubled. Reducing the zinc also means that this solution is less polluting. The main cost savings comes from the prolonged coating life which means that the time between coating renewal (which requires a lot of labor) is doubled.

Manchester U team shows the influence of pre- and post-dispersion on the properties of GNP-enhanced epoxy

Researchers from The University of Manchester have conducted a study that presents a review of the three steps of manufacturing graphene/epoxy nano-composites. The possible pre-treatments of nanoparticles before dispersion are introduced, and their influence on the final nanocomposite properties discussed.

SEM images of fracture surface of aligned GNP based epoxy compositeSEM images of fracture surface of aligned GNP based epoxy composite

The study stresses interesting results, among which are improvements in various characteristics via the use of GNPs. For instance, an improvement of the thermal diffusivity of 220% was seen when compared to a non-oriented GNP epoxy sample. The work demonstrates how the addition of functionalized graphene platelets to an epoxy resin will allow it to act as electrical and thermal conductor rather than as insulator. The mechanical properties of functionalized GNP/epoxy composites show improvement of the interfacial bond.