1. CNT Enhanced Polymers
James Mejia
MEEN 3344

2. What is a Carbon Nanotube?
It is a hollow, cylindrical carbon molecule
About a nanometer in diameter
Are grown as Multi-walled, Single-walled, Double-walled and Fibers

3. How is it used? CNT must first be functionalized to be used a fillers
This can done through chemical exfoliation and dispersion (ex: Zyvex’s Kentera ),also sonication
It is then dispersed into the host polymer, such as Polyurethane, Teflon, paint, etc.
Untreated multi-wall nanotubes vs.
Zyvex functionalized nanotubes

4. “Bridge” Additive

5. Enhancement Properties
Very high tensile strength
High thermal conductivity
High aspect ratio: lower wt% loading needed for enhancement
Improved elasticity
High electrical conductivity

6. Mechanical Properties

7. Host Polymers and Applications
Polyurethane
Teflon
Silicones
Epoxies
Polyesters
Nylon
PVC
PMMA
Acrylates
Sporting Goods
Automotive
Aerospace
Military
Body Armor
Electronics
Semi-Conductors
Biomedical
Paint

8. References www.zyvex.com www.nano-lab.com/imagegallery.html
Yeh, Meng-Kao, Nyan-Hwa Tai, Jia-Hau Liu. “Mechanical Behavior of phenolic-based composites reinforced with mutli-walled carbon nanotubes.” carbon 44(2006): 1-9.