Teflon amorphous fluoropolymer (TAF) multi-walled carbon nanotube (MWCNT) suspensions have the potential for creating conductive coatings on insulating films for numerous applications. However, there are few studies on polymer MWCNT suspension properties and even fewer that use Teflon. To define mechanical and electrical property relationships, bilayer films of TAF-MWCNT were created with differing concentrations of MWCNTs. Nanoindentation revealed that addition of 8 wt% MWCNTs to TAF increased the elastic modulus by about 25% and hardness by about 15%. Conducting indentation showed 8 wt% MWCNT films exhibit uniform stable conductance once indentation depth exceeds several hundred nanometers. Films with lower concentrations of CNTs were insulating. The two techniques provide a unique description of structure property relationships in this suspension film system.
|Original language||English (US)|
|Title of host publication||Properties and Processes at the Nanoscale - Nanomechanics of Material Behavior|
|Number of pages||6|
|State||Published - 2012|
|Event||2011 MRS Fall Meeting - Boston, MA, United States|
Duration: Nov 28 2011 → Dec 2 2011
|Name||Materials Research Society Symposium Proceedings|
|Other||2011 MRS Fall Meeting|
|Period||11/28/11 → 12/2/11|
Bibliographical noteFunding Information:
This work is supported by Sandia National Laboratories, a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.