TECHNOLOGY

What are CNTs?

What are Carbon Nanotubes (CNTs)

Carbon nanotubes (CNTs) are cylindrical shaped carbon forms with nanometric diameters.
CNTs have a hollow structure with walls made of graphene, a hexagonal structure made of carbon atoms.
CNTs can be single walled (SWNT), double walled (DWNT) and multi-walled (MWNT), creating different properties according to their structure.

CNTs have unique properties that make them especially useful in a variety of industries including aviation, automotive, batteries, defense, water treatment and more.

 

What are the unique properties of Carbon Nanotubes?

Individual Carbon nanotubes offer some attractive properties including:

  • Extremely high tensile strength and elastic modulus – 50-120 GPa and ~1 TPa respectively.
  • Diverse electrical conductivity varying from semiconductor to metallic behavior.
  • Extremely high thermal conductivity along the nanotube axis reaching ~ 3500 W/m*K

 

How is Carbon Nanotubes Manufactured?

CCNTs can be manufactured in various methods involving pulsed laser deposition, arc discharge and different types of chemical vapor depositions. In most methods, the final product is CNT powder which has specific drawbacks. Tortech specializes in manufacturing CNT non-woven mats which offer major advantages in regards to the CNT’s properties, quality, price and applicability for composite materials production processes.
 

Tortech CNT non-woven mats – the material of choice for industry

Until now, the industry standard delivery for CNT has been in a powder form with a number of recognized drawbacks including agglomeration problems when used in resins, its tendency to be an airborne health hazard, as well as poor aspect ratio and conductivity.

To solve those issues Tortech has developed non-woven CNT mats.  These offer several major advantages that can improve performance, reduce life cycle costs while avoiding health and safety issues.
 

Toretch CNT non-woven mats offer:

  • A large size, easy to handle and flexible pure CNT fabric
  • The CNTs don’t need to be dispersed. Since the fabric is made of 100% CNTs, it can easily and cost-effectively be impregnated with various liquids using custom industrial techniques.
  • CNT mats demonstrate chemical behavior similar to standard Carbon Fibers (CF). CNT can be integrated relatively easily with    CF composites to create new hybrid composites with       enhanced properties.
  • The CNTs in the mat have a high aspect ratio (~ 1:100,000) creating improved electrical, thermal and mechanical properties.
  • The extra-long CNTs in the mats do not pose an airborne health hazard.