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CONSULTANT: Nanocomposites - Flame Retardants and Fire Resistance of Polymers - Reactive Extrusion

Multi wall carbon nanotubes (MWCNT) as flame retardants for polymers

Home | CV of Dr. Guenter Beyer | First worldwide announcement on flame retardant properties of carbon nanotubes

Picture of a single wall carbon nanotube (SWCNT)

The first worldwide presentation and publication on the flame retardant properties of carbon nanotubes were made at: BCC conference "Flame retardancy of polymeric materials, June 2002, Stamford, Connecticut, USA and in the journal "Fire & Materials", 2002, 26, 291-293


Carbon nanotubes - a new class of flame retardants for polymers


Dr. Guenter Beyer


Flame retardant nanocomposites were synthesized by melt-blending ethylene-vinyl acetate copolymers (EVA) with multi wall carbon nanotubes. Fire property measurements by cone calorimeter revealed that the incorporation of multi wall carbon nanotubes into EVA significantly reduced the peak heat release rates compared to the virgin EVA. Peak heat release rates of EVA with multi wall carbon nanotubes were slightly improved compared to EVA nanocomposites based on modified layered silicates. Char formation was the main important factor for these improvements. There was also a synergistic effect by the combination of carbon nanotubes and modified layered silicates resulting in an overall more perfect closed surface with improved heat release values.

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