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additives | Electrically conductive


defects in final parts, says Conte. Milliken’s Zelec non-metallic electroconductive pow-


ders are well-established in the coatings and adhesives market, but the company has recently expanded their application into compounded plastics. The company says they are particularly suitable for non-sloughing ESD uses that need to be coloured rather than black. Zelec’s ESD properties are also said to not be depend- ant on humidity, while the additive is stable above 200˚C and is miscible with all types of polymers. Milliken produces several types of Zelec powders that all have antimony-doped tin oxide as the outer conductive coating, but use different core materials. The line-up includes a 1-micron spherical particle with a titanium dioxide core that is white; a 3-micron spherical particle with a hollow silica core that is translucent; and a 5-micron plate-like type with a mica core that can also be used in combination with the spherical particles.


CNTs come of age After many years of development, multiwall carbon nanotubes (MWCNTs) are now being broady used in commercial applications, according to Nanocyl. The company’s NC7000 ready-to-use MWCNTs and its Plasticyl masterbatches, for example, are used in a variety of automotive applications including body parts, where they enable electrostatic painting, and fuel pumps and tubing. They are also being used in batter- ies, industrial parts for use in ATEX (potentially explosive) environments, and for electronics packaging, says Michael Claes, CTO of Nanocyl. Meanwhile, Arkema’s Graphistrength MWCNTs are


available as masterbatches in several polymers. One of the big challenges in compounding of nanotubes has been exfoliation – breaking up of the carbon nanotube from the raw agglomerates. Good dispersion is much more readily obtained with the use of the company’s masterbatch products, says Patrick Delprat, Graphist-


Connect at Conductive Plastics 2017 Places are booking fast for AMI’s third Conductive Plastics conference, which takes place on 27-28 June 2017 in Cologne, Germany. Sponsored by Premix, HPF The Mineral Engineers, Imerys, Cabot, Nanocyl and Unipetrol, Conductive Plastics 2017 will again turn its focus on the latest innovations in development and production of thermally and electrically conductive polymer compounds and components. To find out more about the conference, visit the conference website. Conductive Plastics 2016 took place in Philadelphia in the US on 27-28


http://www.amiplastics.com/events/event?Code=C792


September 2016. If you missed the event you can still buy the full proceed- ings for $425.00. For more information or to purchase, contact Senior Conference Coordinator Kelly DeFino. Email kd@amiplastics-na.com


36 COMPOUNDING WORLD | April 2017


Conductive compounds containing carbon nanotubes are being used in a range of commercial applications from electrostatic painting to electronics packaging, says Nanocyl


rength Business Manager. He says that a Graphist- rength masterbatch is currently being used commer- cially in production of 10-micron filaments, which require excellent dispersion. Depending on loading level, the additive can provide antistatic and ESD protection, conductivity and EMI shielding. A relatively new addition to the range of nanoparticu-


late additives is CarbonX 3D. Developed by a Nether- lands-based company of the same name, CarbonX comprise a 3D network of nano fibres. The company has scaled up its production and expects to start sampling six new grades in May this year. The grades are characterised by different structure, size and surface area, which results in different levels of electrical conductivity and mechanical reinforcement (and combinations thereof) when used as fillers in thermo- plastic compounds, according to Daniela Sordi, Chief Technology Officer at CarbonX. The grades are being developed for electrostatic dissipative (ESD) uses, highly conductive compounds, structural compounds, and for applications in the rubber and tyre industry.


Click on the links for more information: ❙ www.imerys-graphite-and-carbon.comwww.zbt-duisburg.dewww.electriplast.comwww.graphene3dlab.comwww.aimplas.net ❙ www.cabotcorp.comwww.akzonobel.comwww.milliken.comwww.nanocyl.comwww.arkema.comwww.carbonx.nl


www.compoundingworld.com


PHOTO: SHUTTERSTOCK


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