Continuous manufacturing of carbon-nanotube-based hybrid films and yarns

J. Bykova
Lintec of America,
United States

Keywords: carbon nanotubes, films, composites

Summary:

The DryDraw™ process—the novel method to make carbon nanotube thin films or cSilk™—involves dry self-assembly of carbon nanotubes from vertically aligned forests; 1 cm of forest can yield up to 10 m of carbon nanotube film of the same width. DryDraw™ process can be easily used for continuous roll-to-roll manufacturing of carbon nanotube thin films or stacks. Introduction of functional coatings and powders during the roll-to-roll process allows to create unique composite with the guest material content as high as 99%wt. Such hybrid materials can be used as electrodes for batteries, supercapacitors and fuel cells, catalytic membranes, magnets, and highly porous absorbers. cSilk™ can be patterned with metals or functional materials by chemical vapor deposition or vacuum evaporation methods, resulting in unique flexible metallic meshes, superconducting films and fibers, thermoelectric nanostructured materials. Additionally cSilk™ can be combined with existing roll-to-roll processes used to manufacture polymeric films.