Nanomechanical Properties of Teflon Amorphous Fluoropolymer -MWCNT Bilayer Films

Autor: Ryan Major, Jack L. Skinner, Rachel L. Schoeppner, Thomas Zifer, William W Gerberich, Neville R. Moody, Andrew Vance, Greg O'Bryan, A. Qiu, Douglas Stauffer, David F. Bahr
Rok vydání: 2012
Předmět:
Zdroj: MRS Proceedings. 1424
ISSN: 1946-4274
0272-9172
DOI: 10.1557/opl.2012.534
Popis: 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.
Databáze: OpenAIRE
Externí odkaz: