DexMat Carbon Nanotube Yarn: Will it Burn?

This video highlights the high temperature stability of CNT yarns compared to copper wire by applying a 1430 C butane torch to both materials. The copper wire lasts about 5 seconds before melting, while the CNT yarn survives the torch for more than 30 seconds without any visible damage.  The high thermal stability and superior thermal conductivity of the CNT material is most likely the reason that it is able to survive exposure to the flame from the torch.  The impressive thermal properties of CNT fibers and films make them highly promising for application in flame retardant materials such as those used in firefighter suits.

DexMat Carbon Nanotube Film: Will it Tear?

The films and yarns manufactured by DexMat are made from well-aligned carbon nanotubes; they are resistant to breaking or tearing across the direction of that alignment.

However, when working with these materials it is helpful to keep in mind that their toughness is much lower when the aligned layers are pulled apart. As this video demonstrates, it is difficult to cut or tear our carbon nanotube film “crosswise”, but the same film can easily be torn into strips “lengthwise”. The same is true for cutting with a scissors or razor.

Cutting Carbon Nanotube Yarn

Materials made of aligned carbon nanotubes are very tough, which makes them difficult to cut! This video provides a useful tip for cutting our aligned carbon nanotube yarn to a desired length using a sharp razor.

A sharp pair of scissors can also work, so long as the yarn is under tension.

Cutting a Carbon Nanotube Film

Materials made of aligned carbon nanotubes are very tough, which makes them difficult to cut! This video provides a useful tip for cutting our aligned carbon nanotube film to a desired length using a sharp razor. A sharp pair of scissors can also work, so long as the film is under tension.

Carbon Nanotube Yarn Tensile Test

A demonstration of a test of ultimate tensile break force performed on a carbon nanotube yarn manufactured by DexMat.

Raw Carbon Nanotubes vs DexMat Material

Here we show the difference between raw carbon nanotubes and the carbon nanotube yarns and films that we make at DexMat.