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PMR polyimide prepreg with improved tack characteristicsCurrent PMR Polyimide prepreg technology utilizes methanol or ethanol solvents for preparation of the PMR prepreg solutions. The volatility of these solvents limits the tack and drape retention characteristics of unprotected prepreg exposed to ambient conditions. Studies conducted to achieve PMR 15 Polyimide prepreg with improved tack and drape characteristics were described. Improved tack and drape retention were obtained by incorporation of an additional monomer. The effects of various levels of the added monomer on the thermo-oxidative stability and mechanical properties of graphite fiber reinforced PMR 15 composites exposed and tested at 316 C (600 F) were discussed.
Document ID
19780009278
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Serafini, T. T. (NASA Lewis Research Center Cleveland, OH, United States)
Delvigs, P. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1976
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA-TM-73898
Report Number: NASA-TM-73898
Meeting Information
Meeting: Intern. Conf. on Composite Materials
Location: Toronto
Country: Canada
Start Date: April 16, 1978
End Date: April 21, 1978
Sponsors: Am. Inst. of Mining, Metallurgical and Petroleum Engineers
Accession Number
78N17221
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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