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Nanomechanical Properties of Teflon Amorphous Fluoropolymer -MWCNT Bilayer Films

Published online by Cambridge University Press:  21 March 2012

R. L. Schoeppner ,
A. Qiu ,
D. D. Stauffer ,
R. C. Major ,
J. L. Skinner ,
T. Zifer ,
G. O’Bryan ,
A. Vance ,
W. W. Gerberich  and
D. F. Bahr
...Show all authors
R. L. Schoeppner
Affiliation:
Mechanical and Materials Engineering, P.O. Box 642920, Washington State Univeristy, Pullman, WA 99164, U.S.A.
A. Qiu
Affiliation:
Mechanical and Materials Engineering, P.O. Box 642920, Washington State Univeristy, Pullman, WA 99164, U.S.A.
D. D. Stauffer
Affiliation:
Chemical Engineering and Materials Science, 421 Washington Ave SE, University of Minnesota, Minneapolis, MN 55455, U.S.A.
R. C. Major
Affiliation:
Hysitron Inc., 10025 Valley View, Minneapolis, MN 55344, U.S.A.
J. L. Skinner
Affiliation:
Sandia National Laboratory, P.O. Box 969 MS9402, Livermore, CA 94551-0969, U.S.A.
T. Zifer
Affiliation:
Sandia National Laboratory, P.O. Box 969 MS9402, Livermore, CA 94551-0969, U.S.A.
G. O’Bryan
Affiliation:
Sandia National Laboratory, P.O. Box 969 MS9402, Livermore, CA 94551-0969, U.S.A.
A. Vance
Affiliation:
Sandia National Laboratory, P.O. Box 969 MS9402, Livermore, CA 94551-0969, U.S.A.
W. W. Gerberich
Affiliation:
Chemical Engineering and Materials Science, 421 Washington Ave SE, University of Minnesota, Minneapolis, MN 55455, U.S.A.
D. F. Bahr
Affiliation:
Mechanical and Materials Engineering, P.O. Box 642920, Washington State Univeristy, Pullman, WA 99164, U.S.A.
N. R. Moody
Affiliation:
Sandia National Laboratory, P.O. Box 969 MS9402, Livermore, CA 94551-0969, U.S.A.
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Abstract

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.

Keywords

nano-indentationelectrical propertiesthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1424: Symposium SS – Properties and Processes at the Nanoscale Nanomechanics of Material Behavior , 2012 , mrsf11-1424-ss07-25
Copyright
Copyright © Materials Research Society 2012

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References

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