Temperature-activated interfacial friction damping in carbon nanotube polymer composites.
Effect of temperature on interfacial sliding in single-walled carbon nanotube polycarbonate composites is investigated experimentally. We show that interfacial slip at the tube-polymer interfaces can be activated at relatively low dynamic strain levels ( approximately 0.35%) by raising temperature to approximately 90 degrees C. We attribute this to increased mobility of the polymer chain backbones at elevated temperatures and thermal relaxation of the radial compressive stresses at the tube-polymer interfaces. These results show the potential of polymer nanocomposites as high-temperature damping materials for vibration and acoustic suppression in a variety of dynamic systems.
Suhr
Jonghwan
J
Department Mechanical, Aerospace and Nuclear Engineering and Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA. suhrjh@rpi.edu
Zhang
Wei
W
Ajayan
Pulickel M
PM
Koratkar
Nikhil A
NA
D009038:Motion; D036103:Nanotechnology; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D011076:Polycarboxylate Cement / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013499:Surface Properties; D013696:Temperature
D037742:Nanotubes, Carbon; D011076:Polycarboxylate Cement; C005506:polycarbonate