ADDITIVES | NANOCOMPOSITES
Right: Graphmatech’s new Aros MB-HDPE-IM graphene masterbatch is available through its online store
One its latest developmental grades
uses graphene oxide, which as its name suggests is an oxidised form of graphene. Graphene oxide is less costly than graphene but, due to the presence of oxygen in the structure, is typically less electrically conductive. The company says it is currently studying the developmental grade to assess property en- hancement features such as electri- cal and thermal conductivity, tensile strength, and barrier performance. It is targeted at applications in fibre and film. Sweden’s Graphmatech — a startup focused on
R A P
production of polymer composites based on graphene — has also extended its graphene masterbatch offering with the introduction of Aros MB HDPE-IM, a polyolefin-based grade tailored for injection moulding applications. The masterbatch is available through the company’s on-line store and has been introduced primarily to allow potential users to test and evaluate performance in different applications. According to the company, the masterbatch can enhance the gas barrier or electrical properties of compounds while maintain- ing mechanical properties.
Supplied as 3mm pellets, it is said to be highly compatible with most standard HDPE resins and can be used to substitute carbon black masterbatches as it will retain colour at a much lower concentration.
3D print potential Graphmatec also sees opportunities for graphene in the 3Dprint arena. This summer, the company announced a partner- ship with Wematter, another Swedish
startup aiming to develop a new additive manufacturing machinery platform based on the powder-based selective laser sintering (SLS) build strategy. The aim of the partnership is to develop an electrically conductive powder specifically opti- mised for use in Wematter’s Gravity SLS 3D printer. The high-performance powder will be based on PA11 and will enable printing of parts that combine good mechanical properties while meeting electrostatic dissipative (ESD), electromagnetic shielding, or enhanced conductivity characteristics. UK-company Versarien, which earlier this year announced its successful re-certification under the US-based Graphene Council’s Verified Graphene Producer programme, says it hopes to commercial- ise the use of its materials in a new sports shoe developed in partnership with US-based Flux Footwear. According to the company, it will be supplying
Left: Wematter is working with Graphmatech to develop graphene compounds for its
Gravity SLS 3Dprint system
graphene enhanced elastomers to the adaptive footwear manufacturer for a modifed version of its existing Adapt design. The AdaptMid design will use Versarien’s Graphene-Wear technology to provide greater durability and abrasion resistance to the flexible sole while maintaining the shoe’s re- quired traction characteristics. The shoe is expect-
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