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High-Temperature Mechanical Behavior and Phase Morphology of Poly(Tetrafluoroethylene)/Siloxane Nanocomposites Used as Ultra Low-k Dielectrics

Published online by Cambridge University Press:  17 March 2011

Ping Xu ,
Shichun Qu ,
Tom Rosenmayer  and
Min Y. Lin
Ping Xu
Affiliation:
W. L. Gore & Associates, Inc., 2401 Singerly Road, Elkton, MD 21921
Shichun Qu
Affiliation:
W. L. Gore & Associates, Inc., 1414 West Hamilton Avenue, Eau Claire, WI 54703
Tom Rosenmayer
Affiliation:
W. L. Gore & Associates, Inc., 1414 West Hamilton Avenue, Eau Claire, WI 54703
Min Y. Lin
Affiliation:
National Institute of Standards and Technology, React E 151, Gaithersburg, MD 20899
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Abstract

Poly(tetrafluoroethylene) (PTFE)/siloxane nanocomposites have been prepared as ultra low-k dielectrics. These new nanocomposites show excellent high-temperature mechanical properties compared to unfilled PTFE while their dielectric constant almost remains unchanged. Specifically, the data from the dynamic mechanical study indicates that these nanocomposites have the mechanical behavior similar to that of crosslinked polymers. Small-angle neutron scattering (SANS) has been carried out to characterize the phase morphology of the PTFE/siloxane nanocomposites and the size of the inorganic networks. It has been shown that no phase separations or orientations appear in these nanocomposites in the range of 12 to 469 nm. These SANS results suggest that these materials are single-phase nanocomposites that are very homogeneous and isotropic. They are basically PTFE-based molecular composites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 612: Symposium D – Materials, Technology & Reliability for Advanced Interconnects.. , 2000 , D5.8.1
Copyright
Copyright © Materials Research Society 2000

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