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Carbon Nanotube- Carbon Fiber Veil Composite NanoLab developed Carbon Nanotube- Carbon Fiber Veil Composite material to create a highly scalable, low cost sheet form of our carbon nanotubes. We start with a carbon fiber veil, made up of 7-10 micron diameter fibers, and coat this sheet with our catalyst composition, using a low cost roll to roll process. We then use the In-Situ Growth process to grow carbon nanotubes on every carbon fiber in the nonwoven sheet. The resulting composite has a number of uses, and can be customized for particular applications. A number of stock basis weights are available, and we can also process woven carbon cloth, fibrous carbon preforms like TGPH and AVcarb papers, and metal fiber mesh with the same process. Image at right: Carbon nanotubes grown on carbon fiber mesh, using the In-Situ-Growth (ISG) process. The apparent fiber diameter is now increased from 7 microns to ~50 microns due to the nanotube coating. Properties Width: up to 10” wide Length: up to 200m rolls Thickness: 50 microns Basis Weight: CF 6.8g/m2 Basis Weight: CNT 20g/m2 Specific Surface area: 100-150 m2/g Resistivity: <20 ohm/sq Porosity (Gurley): 10-1000 s/100cm3 Wettability: Hydrophobic or hydrophillic   Standard offering: Contact us for ISG veil materials Catalog# CV 2 CV 8x10 CV 10x144 CV 10xR Shape Square Rectangle Rectangle Rectangle Size 2"x2" 8"x10" 10"x12ft 10"xRoll thickness ~0.05mm ± 0.05mm CNT Density 2mg/cm2 Price $100 $800 Contact us Contact us Carbon fiber veil, before (left) and after CVD carbon nanotube growth     at 10,000X, the diameter of the carbon nanotubes can now be seen. Here, the nanotubes are ~10nm in diameter, and well over 20 microns in length. Applications 1. Energy Storage The ISG carbon nanotube nonwoven veil has a high electrical conductivity and a high surface area (~100m2/g), and can be tailored for use as electrodes materials in supercapacitors, ultracapacitors, gas diffusion electrodes, fuel cell electrodes, and battery electrodes. For data regarding this material as an electrode in supercapacitors, please review the pdf file (will come soon) This material can be customized for your product development needs. 2. Composites The ISG carbon nanotube veil can make an excellent conductive top layer in composite fabrication. The nanotubes impart conductivity to the sheet, sufficient for electrostatic dissipation aka ESD, resistive heating or resistive curing of composites, or electromagnetic interference, aka EMI shielding. The veil can be infiltrated with epoxies using standard VARTM processing or simple vacuum bagging. Mechanically, the ISG carbon nanotube veil can boost fracture toughness and interlaminar shear strength of composites. For data regarding the mechanical performance of these carbon fiber veils in composites, please review the pdf file (will come soon). This page was updated on 09/27/2012