event review | Conductive Plastics 2016
rength Business Manager. Arkema has been producing MWNT’s on an industrial scale since 2011 and has over the intervening period developed expertise in the challenge of exfoliating MWNT. It offers the additives dispersed in masterbatches containing up to 45% CNT. Nick DeLuca, Business Development Engineer for
This schematic model shows the 3D structure of carbon nanotube aggregates developed by CarbonX
ability to be coloured and that they are non-sloughing. Zelec has been used in coatings and adhesives and is now being promoted for compounding into plastics. The powder can be made into a masterbatch and behaves similarly to powdered pigments, said Cahill. Arkema’s Graphistrength multiwall carbon nanotubes
(MWNT) can be used at low levels to make thermoplas- tics antistatic or at higher levels for EMI shielding and electrical conductivity, said Patrick Delprat, Graphist-
Antistatics at Arkema, also described the company’s Pebax permanently antistatic block copolymers, which form a 3D-network in the polymer matrix and do not migrate to the surface.
Thermal modification Several types of additives can be used to make plastics thermally conductive. Boron nitride - known as “white graphite” because it has a similar structure to carbon graphite - adds thermal conductivity but is electrically insulating, said Kristi Gangelhoff, Advanced Application Development Engineer in 3M’s Advanced Materials Division. The company offers boron nitride as platelets as well as in a flake form that is an agglomerate of platelets (the Cooling Filler flakes have higher through- plane thermal conductivity). Gangelhoff shared data showing the influence of particle size, shape, and
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Booth 14 13-14 December 2016, Philadelphia
Polymers
Enhancing conductivity ENSACO
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