Nano Science and Technology Institute
Nanotech 2008 Vol. 1
Nanotech 2008 Vol. 1
Nanotechnology 2008: Materials, Fabrication, Particles, and Characterization - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 1
 
Chapter 6: Characterization
 

Polyurethane Nanocomposites Containing NCO-Functionalized Carbon Nanotubes and NCO-Functionalized Nanoclays

Authors:T. Nguyen, A. Granier, B. Pellegrin, M. Celina
Affilation:NIST, US
Pages:848 - 851
Keywords:nanocomposites, polyurethane, functionalization, isocyanate, performance
Abstract:Mechanical property, UV resistance, and oxygen permeation performance of automobile polyurethane (PU) coating containing NCO-functionalized (MWCNTs and nanoclays) have been measured. A novel method was used to functionalize CNTs and nanoclays using a diisocyanate in which the two end NCO groups have different reactivities. NCO-functionalized nanoparticles form covalent bonds with, and are imbedded in, the matrix, while unfunctionalized ones remain loosely on matrix surface. Tensile moduli of composites containing NCO-functionalized nanopartciles are much higher than those without or with unmodified nanoparticles. The photodegradation and oxygen permeation of composites containing CNTs was greatly reduced. The results indicated that NCO-functionalized (MWCNTs and nanoclays) can be used to greatly many fucntional properties of PU coatings.
Polyurethane Nanocomposites Containing NCO-Functionalized Carbon Nanotubes and NCO-Functionalized NanoclaysView PDF of paper
ISBN:978-1-4200-8503-7
Pages:1,118
Hardcopy:$159.95
 
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