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Solventless LARC-160 Polyimide Matrix ResinThe addition polyimide, LARC-160, which was originally synthesized from low cost liquid monomers as a laminating resin in ethanol, was prepared as a solventless, high viscosity, neat liquid resin. The resin was processed by hot-melt coating techniques into graphite prepreg with excellent tack and drape. Comparable data on graphite reinforced laminates made from solvent-coated and various hot-melt coated prepreg were generated. LARC-160, because of its liquid nature, can be easily autoclave processed to produce low void laminates. Liquid chromatographic fingerprints indicate good reaction control on resin scale ups. Minor changes in monomer ratios were also made to improve the thermal aging performance of graphite laminates.
Document ID
19780008244
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stclair, T. L. (NASA Langley Research Center Hampton, VA, United States)
Jewell, R. A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1978
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA-TM-74994
Report Number: NASA-TM-74994
Meeting Information
Meeting: Natl. SAMPE Symp.
Location: Annaheim, CA
Country: United States
Start Date: May 2, 1978
End Date: May 4, 1978
Accession Number
78N16187
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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