New carbon nanotubes for conductive polymers are available from SouthWest NanoTechnologies Inc. of Norman, Okla.
The new grades, SMW200 and SMW210 are easier to disperse and have lower percolation threshold in customer thermoplastic compound testing. They allow electrostatic discharge at lower filler loadings than carbon black or multi-wall carbon nanotubes in a range of polymers, the firm claims. Low percolation threshold minimizes degradation of the physical properties of a polymer, a common problem in heavily loaded compounds, according to SouthWest.
SMW200 has carbon nanotube purity of 96+ percent while SMW210 has purity of 70+ percent, with the balance being metal oxides used in the catalyst. The latter material is priced much lower and has a hybrid structure with metal-oxide particles to further aid dispersion.
SMW200 has been demonstrated as a carbon black replacement in lithium batteries for higher life, higher capacity and lower heat build-up.
Tel. 405-217-8388, fax 405-217-8389, email [email protected].