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Carbodeon unveils performance enhancing nanodiamond polymer

Posted: 25 Oct 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Carbodeon? nanodiamonds? thermally conductive polymers? LED manufacuter?

A thermal filler that uses nanodiamonds has been developed by Carbodeon. The company's latest offering increases conductivity of thermally conductive polymers by 25 per cent to provide performance increases for polymers used in electronics and LED manufacture.

With a polyamide 66 (PA66) reference material containing 45 pe rcent by weight of boron nitride as the thermal filler, Carbodeon created a new material using 44.9 per cent boron nitride and 0.1 per cent of its uDiamond nanodiamond powder. The thermal conductivity of the PA66 increased by 25 per cent.

The increase in thermal conductivity is achieved without affecting the electrical insulation or other mechanical properties of the material, making it an ideal choice for a wide range of electronics and LED applications.

Carbodeon CTO Vesa Myllym?ki said: "The performance improvements achieved by this filler are derived from the extremely high thermal conductivity of diamond, at around 2000W/mK. The key development made by Carbodeon is to tune the surface chemistry of the diamond particles and mixing process to develop a nano-composite in which the diamond is very well interfaced to the polymer molecules."

The active surface chemistry inherent in detonation-synthesised nanodiamonds has historically presented difficulties in application of these promising 4-6nm particles, making them prone to agglomeration. Carbodeon tunes that surface chemistry so that the particles are driven to disperse and to become consistently integrated throughout parent materials, especially polymers. The much-promised properties of diamond can thus be imparted to other materials with very low, and hence economic, concentrations.

- Paul Buckley
??EE Times

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