Right: A tray for holding electronic
components
produced in the latest ESD
compounds from Total
additives | Electrically conductive Carbon black producer and compounder Cabot is
introducing new Cabelec conductive compounds with halogen-free flame retardants as well as some new conductive solutions for thermoplastic polyurethane (TPU) applications. “The conductive plastics market continues to evolve and innovate to meet more exacting standards in terms of safety, health and environment, whether through regulatory pressure or consumer demand,” says Sebastian Heitkamp, EMEA marketing manager for Specialty Compounds. “For instance, the European Union Restriction of Hazardous Substance (RoHS) restricts the use of hazardous substances in applications such as electrically conductive plastic for electronics.” As a result, Cabot’s Specialty Compounds business recently added a V-0 halogen-free flame retardant grade to its portfolio of conductive compounds. “Functionalisation and increasing safety norms are
also key drivers for further expansion of conductive plastics, particularly in areas where softness is a key criterion,” says Heitkamp, who highlights a recently introduced conductive TPU injection moulding com- pound, Cabelec CA6397. “This is made with a high- performance carbon black that can enable excellent mechanical properties and superior abrasion resistance in end-use products.” The compound absorbs very little moisture from the atmosphere under normal storage and usage conditions, so pre-drying before processing can be avoided in most cases. Cabot also offers a conductive concentrate for
various types of thermoplastic elastomers, including TPVs. “Both products offer excellent conductivity paired with low shore hardness properties,” he says. Luvocom ES is the latest generation of thermoplas- tic shielding compounds from Lehmann & Voss. They contain metal fibres in combination with other additives, says Thomas Collet, global product and marketing manager for the company’s Customized Polymer Materials business unit. Rheology is opti- mised for easy processing and thin walls. “This results in a much lower risk of defects in moulded parts due to imperfectly distributed fillers in comparison to polymers and masterbatches that have been dry
Conductive Plastics 2016
AMI will run its first Conductive Plastics conference in North America later this year. The event, which is supported by Compounding World and Injection World magazines, is focused on the formulation and processing of both thermally conductive and electrically conductive plastics and takes place in Philadelphia, PA, USA, on 27-28 September. To find out more about attending or exhibiting, contact conference coordinator Kelly Cressman. Tel: +1 610 478 0800; Email:
kc@amiplastics-na.com. Or visit the Conductive Plastics 2016 website
http://bit.ly/CPUS16
38 COMPOUNDING WORLD | April 2016
blended at the injection moulding machine,” Collet notes. Overall shrinkage, flow and mechanical properties
for some Luvocom ES compounds are said to be close to standard PC/ABS with 20% glass fibre reinforcement. Parts produced in the new grades are said to display an “attractive” surface appearance. Flame retardant packages can also be included. PolyOne highlights the broad specialty solutions
portfolio of electrically conductive compounds under its Stat-Tech brand, which covers the full range of resistivity values from anti-static to dissipative and also conductive. Solutions can be formulated using any of a variety of conductive fillers, including carbon-based and metallic fibres, with different characteristics, including natural, pre-coloured, highly translucent or even transparent anti-static colours. The company cites a recent project in which a
dissipative Stat-Tech compound replaced metal in a fan wheel application for a gas heater. The thermoplastic fan wheels had to perform at up to 8,000rpm and the customer wanted to save weight and cost while avoiding tribocharging electrification and any subsequent explosion or other event. Stat-Tech was used to mould a fan that was 60% lighter than the metal version and reduced manufacturing cycle times (from four minutes for machined metal to one minute and 5 seconds for the moulded component). The manufacturer estimated its part processing savings at 20%.
Click on the links for more information: ❙
www.carbonx.nl ❙
www.nanocyl.com ❙
www.vamptech.com ❙
www.lati.com ❙
www.imerys-graphite-and-carbon.com ❙
www.mackinacpolymers.com ❙
www.ionphase.fi ❙
www.arkema.com ❙
www.premixgroup.com ❙
www.tbaps.com ❙
www.totalrefiningchemicals.com ❙
www.cabotcorp.com ❙
www.lehvoss.de ❙
www.polyone.com
www.compoundingworld.com
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