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A Dry Powder Process for Preparing Uni-Tape Prepreg from Polymer Powder Coated Filamentary TowpregsA process for preparing uni-tape prepreg from polymer powder coated filamentary towpregs is provided. A plurality of polymer powder coated filamentary towpregs are provided. The towpregs are collimated so that each towpreg is parallel. The sandwich is heated to a temperature wherein the polymer flows and intimately contacts the filaments and pressure is repeatedly applied perpendicularly to the sandwich with a longitudinal oscillating action wherein the filaments move apart and the polymer wets the filaments forming a uni-tape prepreg. The uni-tape prepreg is subsequently cooled.
Document ID
19960002673
Acquisition Source
Legacy CDMS
Document Type
Other - Patent Application
Authors
Wilkinson, Steven P. (College of William and Mary Newport News, VA., United States)
Johnston, Norman J. (NASA Langley Research Center Hampton, VA, United States)
Marchello, Joseph M. (Old Dominion Univ. Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
April 10, 1995
Subject Category
Nonmetallic Materials
Report/Patent Number
NAS 1.71:LAR-15114-1-CU
Accession Number
96N12681
Funding Number(s)
CONTRACT_GRANT: NAG1-1067
CONTRACT_GRANT: NCC1-150
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-15114-1-CU
Patent Application
US-PATENT-APPL-SN-425005

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