Printer Friendly

Strain hardening nanocomposites.

U.S. Patent 9,358,730 (June 7, 2016), "Dynamic Strain Hardening in Polymer Nanocomposites," Pulickel M. Ajayan and Brent Joseph Carey (William Marsh Rice University, Houston, Texas, USA).

Polymeric nanocomposites often lack stiffness or strength which cannot be easily enhanced. Ajayan and Carey enhanced stiffness by 50 to 30% with a dynamic stress. These composites consist of a polymer matrix and nanofillers with an interphase between matrix and fillers. Stiffness and strength of the composite can be increased permanently in response to the applied stress. It also increases the storage modulus, decreases the loss modulus and loss tangent. In these cases, the applied stress rearranges the interphase. This stress can be mechanical dynamic, static or cyclical stress. The nanofillers include carbon nanotubes, graphite, carbon black, nanofibers and nanoparticles. The polymers range from polyethylene to polyimides, as well as elastomers.

COPYRIGHT 2016 Society of Plastics Engineers, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2016 Gale, Cengage Learning. All rights reserved.

 
Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:INDUSTRY PATENTS
Author:Corneliussen, Roger
Publication:Plastics Engineering
Article Type:Brief article
Geographic Code:1USA
Date:Sep 1, 2016
Words:140
Previous Article:Conditioning preforms.
Next Article:Stretch film.
Topics:

Terms of use | Privacy policy | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters