Carbon Nanotube Compounds

TBA’s new conductive PC/PBT carbon nanotube injection moulding compounds utilise multi wall carbon nanotube technology to give permanently conductive materials. Special compounding techniques at low filler loadings having been developed to disperse the nanotubes ensuring the retention of physical properties and excellent cleanliness. ESD and shielding compounds have been produced with particular successes in PC, PC/ABS and PC/PBT compounds. Hybrids of carbon nanotubes with stainless steel fibres have given high EMI shielding results in excess of what is achieved separately. The multi wall carbon nanotubes are very small hollow tubular structures of graphite carbon. Diameter is typically 1.2 – 2.4nm and 1 nm is 10-9 metres (1,000,000,000ths). Typically the fibrils are 10,000 nm long, with a very high aspect ratio. Mouldings exhibit excellent dimensional and chemical stability and are clean and non-sloughing.

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