Talga Resources has announced positive initial test results from epoxy resin-based coatings formulated using Talga’s Talphene branded graphene. Epoxy based coatings are used in various applications, from internal concrete flooring to urban construction products, and they particularly suit anti-corrosion applications.
Talga’s tests used a formulated dispersion of Talga’s few layered graphene (FLG) and graphene nanoplatelets (GNP), mixed into a two-part epoxy resin. Initial test results show significantly improved coating performance attributes including higher corrosion resistance, increased mechanical strength and higher abrasion resistance compared to the control coatings using commercial type zinc-rich epoxy. Among the key performance gains reported (against control epoxy coatings) are 160% increase in tensile strength, 80% increase in abrasion resistance and 2 orders of magnitude decrease in corrosion rate over zinc-rich epoxy.
These results are significant since improved overall coating performance translates to lower application and infrastructure maintenance costs, coupled with environmental benefits such as reduced toxic metals. Talga’s formulation coupled to its novel method of incorporation into the resin tackles industry issues like inhomogeneous distribution, and a provisional patent has been lodged to protect Talga’s intellectual property.
Talga is now moving to optimize its graphene epoxy technology in tests with independent industry organizations and has commenced an epoxy composite development program with TWI materials and research group based in Cambridge, UK. The development program will test Talga’s graphene epoxy technology against other commercial products, including high strength additives, for a number of functionalities including thermal and electrical conductivity. Results will lead to preparation of prototype material and data for industry partnerships.