The French figure out how to make composites even stronger

The French figure out how to make composites even stronger

November 19, 2020 0 By autotimesnews

NAWA Technologies commercializes CFRP with NAVAstich technology

The French firm NAWA Technologies, which develops advanced lithium-ion and hybrid batteries with electrodes based on vertically aligned carbon nanotubes (VACNT), has announced the creation of NAWA America. The new company will prepare for industrial production of ultra-strong composites with NAWAStitch technology, which also uses VACNT.

NAWA America was created through the takeover of the assets of another American company engaged in the same field, N12 Technologies. Since 2014, she has been developing a patented two-stage process for growing carbon nanotubes, and in parallel, NAWA Technologies has created her own, but one-stage. Now the developments will be combined to produce a family of new high-strength composites.

The special feature of NAWAStitch technology is a thin film containing trillions of nanotubes. They are laid perpendicular to the carbon fibers and act as a “textile Velcro” that strengthens the transition zone between the carbon fiber layers. The use of VACNT will reduce the thickness of composite parts and their weight, and in some cases the difference with conventional materials will be 40 percent. In addition, NAWAStitch carbon fiber composites have increased shear strength by 100 times and impact resistance by 10 times.

The parent NAWA Technologies also uses VACNT, but in the electrodes for lithium-ion batteries and supercapacitors. Last winter, the company unveiled a prototype electric motorcycle with the world’s first hybrid battery powertrain. The proprietary NAWACap “ultracapacitors” can be fully charged in just two minutes, but an entire unit plugged into a household outlet will fill up to 80 percent in one hour.