Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > SouthWest NanoTechnologies Announces New Specialty Multi-Wall Carbon Nanotubes for Conductive Polymers

Abstract:
SouthWest NanoTechnologies (SWeNT) has developed two new grades in its SMW™ line of Specialty Multi-wall CNT. These materials are used as additives that enable higher electrical conductivity in polymer compounds and improved cathode performance in Lithium Ion batteries.

SouthWest NanoTechnologies Announces New Specialty Multi-Wall Carbon Nanotubes for Conductive Polymers

Norman, OK | Posted on June 13th, 2012

The new grades, SMW200 and SMW210 have demonstrated the greatest ease of dispersions and lowest percolation threshold of any MWCNT product in multiple customer thermoplastic compound evaluations. This enables ESD (electrostatic discharge) performance at lower filler loadings than either Carbon Black or other Multi-wall CNT, in a variety of polymers. This low percolation threshold minimizes the degradation of physical properties of the polymer, a common problem in heavily loaded compounds, and higher conductivity at comparable loading broadens the range of applications for conductive polymer compounds.

Both materials are synthesized by the CoMoCAT® method, widely recognized as producing the most consistent CNT products, and for its scalability. Both materials disperse easily into most polymers and have the same ultra-pure, defect-free, less entangled CNT.

SMW200 is a "purified" grade, with CNT purity of 96%+ (even higher purity research grades are available upon special request). SMW210 is an "as produced" grade, with CNT purity of 70%+, with the balance being mainly metal oxides used in the catalyst.

Because post-synthesis purification is not done for SMW210, the pricing is much lower.SMW210 has a hybrid structure with metal-oxide particles attached to the CNT, improving dispersion still further, at a much lower cost. In thermoplastic compounds, there is little performance difference between SMW200 and SMW210 with respect to ease of dispersion, conductivity and percolation, with most customers choosing SMW210 due to lower cost.

SMW200 has also been demonstrated as a Carbon Black replacement in Lithium Ion battery cathodes. Very low loadings (1 wt %) of SWM200 have resulted in doubled cycle life, higher capacity, lower heat build-up and better low temperature performance.

"We have already generated a great deal of customer interest in these materials, and resulting demand is driving us to increase capacity," says SWeNT CEO David Arthur. "We have just shipped our first 100 kg of SMW210 for a customer's full-scale qualification trial for a high-volume conductive polymer application. Also, several Li-ion battery manufacturers are testing SMW200 now (this higher purity grade may be required for certain applications like batteries). To meet anticipated demand in 2013, SWeNT is adding capacity of multiple tonnes per month."

For a 13-page summary report on the performance of SMW200 in Li-ion batteries, for data on conductivity in thermoplastics, or for published reports on conductive polymer applications contact us at .

####

About SouthWest NanoTechnologies, Inc. (SWeNT)
SouthWest NanoTechnologies (SWeNT) is a privately-held advanced materials company that manufactures high-quality Single-Wall and Specialty Multi-Wall carbon nanotube products in a variety of forms, including powders, pastes, dispersions and inks for a wide range of applications in the electronics and composites industries. SWeNT was founded in 2001 and has established commercial-scale manufacturing operations in Norman, OK and a business & applications development center in the Boston, MA area.

For more information, please click here

Contacts:
Andrew Lavin
A. Lavin Communications
516-944-4486

Copyright © SouthWest NanoTechnologies, Inc. (SWeNT)

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024

Shedding light on perovskite hydrides using a new deposition technique: Researchers develop a methodology to grow single-crystal perovskite hydrides, enabling accurate hydride conductivity measurements May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Nanotubes/Buckyballs/Fullerenes/Nanorods/Nanostrings

Catalytic combo converts CO2 to solid carbon nanofibers: Tandem electrocatalytic-thermocatalytic conversion could help offset emissions of potent greenhouse gas by locking carbon away in a useful material January 12th, 2024

TU Delft researchers discover new ultra strong material for microchip sensors: A material that doesn't just rival the strength of diamonds and graphene, but boasts a yield strength 10 times greater than Kevlar, renowned for its use in bulletproof vests November 3rd, 2023

Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023

Detection of bacteria and viruses with fluorescent nanotubes July 21st, 2023

Materials/Metamaterials/Magnetoresistance

How surface roughness influences the adhesion of soft materials: Research team discovers universal mechanism that leads to adhesion hysteresis in soft materials March 8th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

Focused ion beam technology: A single tool for a wide range of applications January 12th, 2024

Catalytic combo converts CO2 to solid carbon nanofibers: Tandem electrocatalytic-thermocatalytic conversion could help offset emissions of potent greenhouse gas by locking carbon away in a useful material January 12th, 2024

Announcements

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024

Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting March 8th, 2024

Discovery of new Li ion conductor unlocks new direction for sustainable batteries: University of Liverpool researchers have discovered a new solid material that rapidly conducts lithium ions February 16th, 2024

A battery’s hopping ions remember where they’ve been: Seen in atomic detail, the seemingly smooth flow of ions through a battery’s electrolyte is surprisingly complicated February 16th, 2024

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project