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Modeling the Formation of Polyimide MicrospheresHigh temperature polyimide microspheres have been developed from polyimide solid residuum by a simple inflation process. Microspheres have been fabricated from several polyimide precursors through the use of a circulating air oven. Microsphere formation and final physical property characterization have been limited to simple mechanical and thermal testing. The present paper focuses on developing an understanding of microsphere formation through simple geometric rules for an incompressible polymeric material and microscopic observations of precursor residuum inflation. Inflation kinematics of the hollow polyimide microspheres as a function of time and temperature is discussed.
Document ID
20030013639
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Pipes, R. B.
(Akron Univ. Akron, OH United States)
Weiser, E. S.
(NASA Langley Research Center Hampton, VA United States)
Gonsoulin, B.
(Old Dominion Univ. Norfolk, VA United States)
Hubert, P.
(Old Dominion Univ. Norfolk, VA United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2002
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: 47th International SAMPE Symposium and Exhibition
Location: Long Beach, CA
Country: United States
Start Date: May 12, 2002
End Date: May 16, 2002
Sponsors: Society for the Advancement of Materials and Process Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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