Upload
dina-mcgee
View
212
Download
0
Embed Size (px)
Citation preview
CNT Enhanced PolymersCNT Enhanced Polymers
James MejiaJames Mejia
MEEN 3344MEEN 3344
What is a Carbon Nanotube?What is a Carbon Nanotube?
It is a hollow, cylindrical carbon molecule It is a hollow, cylindrical carbon molecule About a nanometer in diameterAbout a nanometer in diameter Are grown as Multi-walled, Single-walled, Are grown as Multi-walled, Single-walled,
Double-walled and FibersDouble-walled and Fibers
How is it used?How is it used?
CNT must first be functionalized to be used a CNT must first be functionalized to be used a fillers fillers
This can done through chemical exfoliation and This can done through chemical exfoliation and dispersion (ex: Zyvex’s Kentera ),also sonication dispersion (ex: Zyvex’s Kentera ),also sonication
It is then dispersed into the host polymer, such It is then dispersed into the host polymer, such as Polyurethane, Teflon, paint, etc.as Polyurethane, Teflon, paint, etc.
Untreated multi-wall nanotubes vs.
Zyvex functionalized nanotubes
“ “Bridge” Additive Bridge” Additive
Enhancement PropertiesEnhancement Properties
Very high tensile strength Very high tensile strength High thermal conductivityHigh thermal conductivity High aspect ratio: lower High aspect ratio: lower
wt% loading needed for wt% loading needed for enhancementenhancement
Improved elasticityImproved elasticity High electrical High electrical
conductivityconductivity
Properties of Fibers from Polypropylene (PP) and PP/CNT Composites
Sample PP-Control PP+ 5 wt% carbonnanofiber
Tensile Strength(MPa)
49060 57070
Tensile Modulus(GPa)
4.60.7 7.10.9
Elongation to Break(%)
235 162
CompressiveStrength (Mpa)
251 4810
Mechanical PropertiesMechanical Properties
Host Polymers and ApplicationsHost Polymers and Applications
PolyurethanePolyurethane TeflonTeflon SiliconesSilicones EpoxiesEpoxies PolyestersPolyesters NylonNylon PVCPVC PMMAPMMA AcrylatesAcrylates
Sporting GoodsSporting Goods AutomotiveAutomotive AerospaceAerospace MilitaryMilitary Body ArmorBody Armor ElectronicsElectronics Semi-ConductorsSemi-Conductors BiomedicalBiomedical PaintPaint
ReferencesReferences
www.zyvex.comwww.zyvex.com www.nano-lab.com/imagegallery.htmlwww.nano-lab.com/imagegallery.html www.nanotechweb.org/articles/news/4/2/2/1www.nanotechweb.org/articles/news/4/2/2/1 www.nanovip.com/forumswww.nanovip.com/forums www.4spe.org/htmlemail/techfocus/supportingdocs/www.4spe.org/htmlemail/techfocus/supportingdocs/
0412newtechfocus.pdf0412newtechfocus.pdf www.eastonsports.comwww.eastonsports.com Yeh, Meng-Kao, Nyan-Hwa Tai, Jia-Hau Liu. “Mechanical Behavior Yeh, Meng-Kao, Nyan-Hwa Tai, Jia-Hau Liu. “Mechanical Behavior
of phenolic-based composites reinforced with mutli-walled carbon of phenolic-based composites reinforced with mutli-walled carbon nanotubes.” nanotubes.” www.sciencedirect.comwww.sciencedirect.com carbon 44(2006): 1-9. carbon 44(2006): 1-9.