Thermal management | electrical & electronic
possible, since it can cost upwards of €50 per kg, whereas aluminosilicates sell for under €4 per kg. Boron nitride shows the best through-plane thermal
conductivity, but is very anisotropic. Aluminosilicate provides in-plane thermal conductivity up to 2.3 W/mK and up to 1.35 through-plane. Silatherm is available in different particle size distributions and surface treatments adjusted for different polymer matrices. Meanwhile, boron nitride supplier Saint Gobain
Ceramic Materials reports good progress with its product, despite the increasing competition. “We have discovered that our new grade PCTP30D works beautifully for a wide range of polymers, and has become our workhorse for plastic compounding applications,” says Neelam Kumar, product manager for CarboTherm fillers at the company. Saint-Gobain Ceramic Materials markets this grade as a free-flowing loosely agglomerated powder for cost-sensitive, high-volume applications.
Kumar says that the momentum that was started in
the electronics market by LED lighting manufacturers has prompted other electronic product developers to look at new and novel applications where a thermally conductive and dielectric polymer can be used. “The range of boron nitride in polymers has spread much beyond LED heat sinks, where it first started,” she says. As to the high price of the additive, Kumar says:
“Boron nitride has always co-existed with competing materials in all the markets it serves. Like any other material, if it meets the unique challenges of an application with its unique electrical, thermal and mechanical properties, customers will pay for the value proposition it brings.”
Click on the links for more information: ❙
www.polyone.com ❙
www.rtpcompany.com ❙
www.ensinger-online.com ❙
www.lehvoss.de ❙
www.celanese.com ❙
www.coolpolymers.com ❙
www.lanxess.com ❙
www.dsmep.com ❙
www.lati.com ❙
www.materialscience.bayer.com ❙
www.sabic-ip.com ❙
www.imerys-graphite-and-carbon.com ❙
www.cabotcorp.com ❙
www.quarzwerke.com (HPF) ❙
www.bn.saint-gobain.com
Learn more about conductive plastics
AMI’s Conductive Plastics 2015 conference takes place on 29 June to 1 July in Düsseldorf, Germany. The programme covers developments in thermally-conductive and electrically-conductive compounds and their applications. The full conference line-up includes speakers from 3M, Bayer, Cabot,
Color2Plast, Ensinger, Grafe, HPF/Quarzwerke, Imerys, IonPhasE, Lati, Lux, Nanocyl, Outlast, Pentair Thermal Management, Premix, RTP, Sabic, Technoform, University of Warwick, and Zentrum für Brennstoff- zellentechnik. Full details of the programme and booking information can be found at
http://bit.ly/CP15B.
NORNER - Moulding Development and Test Centre NORNER is an industrially focused plastics institute.
We engage in injection moulding product and packaging development, strategic consulting, material expertise and selection, failure analysis, product performance verifi cation, trouble shooting and laboratory testing.
Check out our free online OTR/WVTR calculator! Process pilots include Engel, Arburg and Netstal moulding machines.
How can we help you? read more at
www.norner.no /
post@norner.no
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